CometChat vs TalkJS

Discover how CometChat compares to TalkJS, and understand which is right for your use case, based on dimensions such as scalability, pricing, security, and their chat features.

What is CometChat?

CometChat is a messaging platform designed for integration into various applications, offering text, voice, and video chat capabilities. It supports extensive customization through SDKs and UI kits.

When to use CometChat

Pros and cons of CometChat

What is TalkJS?

TalkJS provides a chat API with customizable UIs for 1-on-1 messaging, group chats. It includes notifications and supports integration across web and mobile platforms via SDKs.

When to use TalkJS

Pros and cons of TalkJS

Compare CometChat and TalkJS

Let’s compare CometChat and TalkJS, looking at key elements of their offering such as their scalability, pricing, security and chat feature set.

Disclaimer: This comparison was created based on documentation and resources freely available online about CometChat and TalkJS. The content was last updated on 1 May 2025 for CometChat and on 1 May 2025 for TalkJS. Be sure to double-check everything before you make any decisions. If you do find anything incorrect or out of date, then please let us know.

Alternatives to CometChat and TalkJS

While both CometChat and TalkJS are worth considering as options for realtime experiences, they aren’t without their limitations. We suggest evaluating them against the following alternatives to make sure you find the right solution for your needs.

Alternatives to CometChat

Twilio is a platform that provides developers with a suite of communication tools for building messaging infrastructure in their applications.

Ably is the definitive realtime experience platform of the internet. Serving more WebSocket connections than any other pub/sub platform on earth. Businesses trust us to power their critical applications - reliably, securely and at serious scale.

PubNub is a developer API platform that powers the realtime infrastructure in apps to build engaging Virtual Spaces where online communities can connect.

Alternatives to TalkJS

Stream is a realtime chat and activity feeds platform, offering easy integration through APIs and SDKs for enhanced user engagement

CometChat provides rich messaging solutions for apps with features like text, voice, video chat, robust SDKs, and UI kits.

Sendbird offers APIs and SDKs for live chat, realtime messaging, push notifications, and calls with WebSocket connections, UI kits, and backend integrations.

Discover how CometChat and TalkJS stack up against Ably

Ably is the definitive realtime experience platform of the internet. See how we compare to CometChat and TalkJS on key dimensions such as core features, pricing, integrations, QoS, performance, and security and compliance.

Ably vs CometChat Ably vs TalkJS

Try Ably for free to discover the benefits for yourself

Ably has built reliable realtime infrastructure so you don’t have to. On our free plan you benefit from:

6M monthly messages
200 concurrent channels
200 concurrent connections

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	CometChat	TalkJS	Why this matters
Scalability
Concurrent connections	Number of users that can be supported in a single chat.	CometChat Up 100k concurrent connections can be supported. The use of certain features, such as delivery receipts, read receipts, and typing indicators, may impact these limits. For example, groups with all features enabled can accommodate up to 300 members.	TalkJS 300 users can be supported in a single chat. Limits for Enterprise plan are unknown.	Number of users that can be supported in a single chat.
Connections	Number of connections that can be handled across the platform.	CometChat Up to 500k.	TalkJS 25,000 connections can be handled across the platform. Users would need to opt for the Enterprise plan for higher rates.	Number of connections that can be handled across the platform.
Channels / rooms	Number of channels or rooms that can be handled across the platform.	CometChat Unlimited.	TalkJS Unlimited.	Number of channels or rooms that can be handled across the platform.
Messages	Number of messages that can be handled across the platform.	CometChat Unlimited.	TalkJS Unlimited.	Number of messages that can be handled across the platform.
Message throughput	Number of messsages that can be published per second.	CometChat Up to 333 messages per second. API calls for standard operations are rate limited to 20000 requests per min.	TalkJS 9 messages/second rate limit. Read more	Number of messsages that can be published per second.
Data integrity
Guaranteed message delivery	Ensures messages are never lost during transmission, even in the presence of network disruptions.	CometChat No	TalkJS No	Ensures messages are never lost during transmission, even in the presence of network disruptions.
Guaranteed message ordering	Maintains the sequence of messages as they were sent. This is particularly important in apps where the chronological order of messages is essential for meaningful communication.	CometChat No	TalkJS No	Maintains the sequence of messages as they were sent. This is particularly important in apps where the chronological order of messages is essential for meaningful communication.
Exactly-once message delivery	Guarantees that each message is processed exactly once, preventing data inconsistencies that can arise from duplicate processing or missing messages.	CometChat No	TalkJS Yes TalkJS guarantees that messages are sent exactly-once via an idempotency key regardless of any number of retries.	Guarantees that each message is processed exactly once, preventing data inconsistencies that can arise from duplicate processing or missing messages.
Performance & availability
Uptime Guarantee	An uptime guarantee instills confidence in the reliability of the service and protects your business from the negative impacts of downtime.	CometChat 99.99% uptime guarantee. Read more	TalkJS TalkJS guarantees an uptime of 99.9%/month, only available for Enterprise customers.	An uptime guarantee instills confidence in the reliability of the service and protects your business from the negative impacts of downtime.
Global edge network	By bringing servers (Points of Presence, or PoP) geographically closer to the devices of end users, and routing requests to the nearest PoP, global latency is reduced to a minimum.	CometChat Yes Read more	TalkJS No TalkJS servers are only located in the European Union.	By bringing servers (Points of Presence, or PoP) geographically closer to the devices of end users, and routing requests to the nearest PoP, global latency is reduced to a minimum.
Multi-region data replication (message durability)	By replicating data across multiple regions, the risk of data loss or downtime is greatly mitigated since if data is lost or a server fails in one region, the information can be retrieved from another.	CometChat No	TalkJS No TalkJS stores all user data in the European Union. TalkJS resources page	By replicating data across multiple regions, the risk of data loss or downtime is greatly mitigated since if data is lost or a server fails in one region, the information can be retrieved from another.
No single point of failure or congestion	Having no single point of failure means a system is resilient and can continue to operate even if one part fails. Avoiding a single point of congestion ensures messages flow efficiently across the system and avoids bottlenecks that could lead to performance issues under load.	CometChat No	TalkJS No	Having no single point of failure means a system is resilient and can continue to operate even if one part fails. Avoiding a single point of congestion ensures messages flow efficiently across the system and avoids bottlenecks that could lead to performance issues under load.
Latency	Low latency is crucial for realtime apps as it ensures swift and efficient data transmissions, providing a smoother and more responsive user experience.	CometChat Under optimal test conditions, CometChat has a one-way latency of less than 50 ms response time. It is not mentioned what its roundtrip latency is. Read more	TalkJS Unknown.	Low latency is crucial for realtime apps as it ensures swift and efficient data transmissions, providing a smoother and more responsive user experience.
Server-side batching	Reduces the overall message count, lowers costs, and mitigates the risk of hitting rate limits during high-throughput scenarios.	CometChat No	TalkJS No	Reduces the overall message count, lowers costs, and mitigates the risk of hitting rate limits during high-throughput scenarios.
Connection state recovery	Automatically re-establish failed connections and replay missed messages.	CometChat Yes CometChat supports connection state recovery, monitoring realtime connection status to its WebSocket servers. If disconnected, the SDK auto-reconnects, indicating "connecting" and "connected" states. Read more	TalkJS No	Automatically re-establish failed connections and replay missed messages.
Ecosystem support
Supported realtime protocols	Support for multiple protocols provides the flexibility to choose a protocol that best suits your project’s requirements.	CometChat WebSocket.	TalkJS WebSocket only.	Support for multiple protocols provides the flexibility to choose a protocol that best suits your project’s requirements.
Supported languages	Supporting multiple languages and platforms offers greater flexibility when building cross-platform realtime apps.	CometChat CometChat supports several programming languages for effective integration with CometChat's SDKs and APIs: React Vue Swift (for iOS) Kotlin (for Android) PHP Angular React Native Flutter CometChat SDK page	TalkJS JavaScript React React Native Flutter Vue Svelte	Supporting multiple languages and platforms offers greater flexibility when building cross-platform realtime apps.
Chat room types
Multi-type chat support (group, DM, supergroups)	Enables chat experiences to be tailored to various user needs, from one-on-one to large, scalable group discussions.	CometChat Group chat channels Supergroup channels Private and public chat groups Direct message messaging	TalkJS TalkJS JavaScript SDK allows you to implement three chat room types: Direct messaging ( 1-on-1 chat) Group chat Super groups Read more	Enables chat experiences to be tailored to various user needs, from one-on-one to large, scalable group discussions.
Chat room management
Presence	Maintaining a view of which users are connected, and their associated metadata, enables their online status to be updated in realtime.	CometChat Yes CometChat supports user presence out-of-the-box through CometChat SDKs and its UI kits. The SDKs include options for subscribing to presence updates to all users, specific roles, or friends.	TalkJS Yes	Maintaining a view of which users are connected, and their associated metadata, enables their online status to be updated in realtime.
Occupancy	High-level metrics about the clients currently connected to a channel make it simple to show things such as connected user count, or display which channels are the most popular.	CometChat No	TalkJS No	High-level metrics about the clients currently connected to a channel make it simple to show things such as connected user count, or display which channels are the most popular.
Typing indicators	Show when others are typing in a chat room, enhancing realtime communication flow.	CometChat Yes	TalkJS Yes	Show when others are typing in a chat room, enhancing realtime communication flow.
Room reactions	Customize the chat environment with reactions and other shared room states.	CometChat No	TalkJS No	Customize the chat environment with reactions and other shared room states.
Chat message attributes
Message edits and deletes	Allow users to modify or remove messages.	CometChat Yes	TalkJS Yes You can delete or edit messages using TalkJS UI and configure which roles are allowed to do these operations.	Allow users to modify or remove messages.
Message reactions & emoticons	Boost engagement by enabling users to quickly express emotions or feedback on messages.	CometChat Yes	TalkJS Yes	Boost engagement by enabling users to quickly express emotions or feedback on messages.
Rich text support	Enhance messages with rich text formatting in chat.	CometChat Yes	TalkJS Yes	Enhance messages with rich text formatting in chat.
Media attachments	Support for sharing images, videos, and files in chat.	CometChat Yes CometChat in-app messaging allows users to send and receive various documents and multimedia files through its SDKs and UI kits. Read more	TalkJS Yes Read more	Support for sharing images, videos, and files in chat.
Chat application and user state
In-app notifications	Notify users of important events from other chat rooms without them leaving the current chat, keeping them engaged and informed.	CometChat Yes CometChat supports in-app notifications through CometChat's push notification service.	TalkJS No	Notify users of important events from other chat rooms without them leaving the current chat, keeping them engaged and informed.
Role-based permissions	Control user roles and permissions to ensure proper access and moderation.	CometChat Yes	TalkJS Yes TalkJS allows you to select the appropriate roles and permissions of a user from the Chat UI. The user can have a single role at a time within the chat. Read more	Control user roles and permissions to ensure proper access and moderation.
UI kit	Customizable UI elements for a seamless chat integration.	CometChat Yes CometChat supports UI kits for: Android iOS React Flutter Vue Angular	TalkJS Yes TalkJS provides pre-built UI to help you add chat easily.	Customizable UI elements for a seamless chat integration.
Storage and history
Synchronous - automated moderation	Detect and manage harmful content automatically, before the message is broadcast to participants.	CometChat Yes	TalkJS No	Detect and manage harmful content automatically, before the message is broadcast to participants.
Asynchronous - automated moderation	Detect and manage harmful content automatically, after the message is broadcast to participants.	CometChat Yes	TalkJS No	Detect and manage harmful content automatically, after the message is broadcast to participants.
Manual moderation via dashboards	Tools for moderators to detect harmful messages and manage them effectively.	CometChat Yes CometChat lets human experts handle complex moderation cases. It allows users to set rules that flag borderline content for human review.	TalkJS Yes The TalkJS dashboard enables you to manually address and remove any unwanted content that may appear in your chats.	Tools for moderators to detect harmful messages and manage them effectively.
Ban users	Remove problematic users from the chat to maintain a healthy environment.	CometChat Yes	TalkJS Yes TalkJS allows you to remove users in a conversation via its REST API. After you have removed a user from a conversation, you can ban them by setting up identity verification and turning off browser synchronization. Read more	Remove problematic users from the chat to maintain a healthy environment.
Dev tools
Programmatic management	Enables the automation of provisioning, management, and testing of service resources, simplifying integration with existing development workflows such as CI.	CometChat Yes	TalkJS Yes TalkJS supports programmatic management through its API.	Enables the automation of provisioning, management, and testing of service resources, simplifying integration with existing development workflows such as CI.
Pricing
Pricing model	The pricing model should align with your project's expected load, usage patterns, and budget in order to be cost-effective and efficient.	CometChat CometChat pricing is based on the number of MAUs. Overages apply for additional MAU's and peak concurrent connection - over set quota. CometChat pricing page	TalkJS TalkJS offers pricing based on MAUs. Overages apply. TalkJS pricing page	The pricing model should align with your project's expected load, usage patterns, and budget in order to be cost-effective and efficient.
Pricing illustration	An example price based on 5 live streaming chat events and 50K attendees.	CometChat $24,419 Base price - $669 Overages per additional concurrent user over 1250 - $23,750 Note: Assumes same users attend each event, to keep MAU at minimum	TalkJS It isn't clear if 25K users could be supported in a single live stream chat. TalkJS restrictions would mean only 1250 could 'participate' in an event at any one time.	An example price based on 5 live streaming chat events and 50K attendees.
Free plan	With a free plan, you can test the service’s functionality and compatibility with your project before committing to a paid plan.	CometChat Yes Free for up to 100 users.	TalkJS Yes	With a free plan, you can test the service’s functionality and compatibility with your project before committing to a paid plan.
Pricing plans	The pricing plans offered by cost.	CometChat Basic: Starting from $298.75/month for 1K MAUs - scale up to 1M Advanced: Starting from $423.75/month for 1K MAUs - scale to to 10M Enterprise: Custom pricing available from 10K MAU Overages: Per additional MAU - $0.10 Per additional peak concurrent connection at $1 each	TalkJS Basic: $279/month, 10,000 MAU Growth: $569/month, 25,000 MAU Enterprise: customized + Uptime & support guarantees (SLA)	The pricing plans offered by cost.
Support for additional realtime features
Pub/Sub messaging	Reduces communication code complexity, simplifying the process of building highly functional and architecturally complex realtime apps.	CometChat No	TalkJS No	Reduces communication code complexity, simplifying the process of building highly functional and architecturally complex realtime apps.
Collaboration capabilities	Enables you to quickly integrate realtime collaborative features like live cursors, member location, avatar stacks, and component locking.	CometChat Yes CometChat offers collaboration capabilities with tools like polls, whiteboards, and collaborative documents.	TalkJS No	Enables you to quickly integrate realtime collaborative features like live cursors, member location, avatar stacks, and component locking.
Database sync capabilities	Database sync capabilities enable realtime updates between your database and UI, ensuring the UI reflects changes in the database instantly, with data consistency, and without the need for polling.	CometChat No	TalkJS No	Database sync capabilities enable realtime updates between your database and UI, ensuring the UI reflects changes in the database instantly, with data consistency, and without the need for polling.
Notifications	Send notifications directly to users screens, from chat responses to news alerts, or game updates, whether or not an application is open and running.	CometChat Yes	TalkJS Yes TalkJS supports email notifications, SMS notifications, browser notifications, and mobile push notifications.	Send notifications directly to users screens, from chat responses to news alerts, or game updates, whether or not an application is open and running.
Asset tracking	State-of-the-art asset tracking across last mile logistics, food delivery applications, and urban mobility services.	CometChat No	TalkJS No	State-of-the-art asset tracking across last mile logistics, food delivery applications, and urban mobility services.
Integrations & interoperability
AI models	Allows you to integrate AI models, like GPT, into your app.	CometChat Yes CometChat uses the M87 LLM for its generative conversations. Read more	TalkJS No	Allows you to integrate AI models, like GPT, into your app.
Serverless functions	Enables integration with third-party cloud providers by facilitating the execution of custom code against messages to perform business logic like on-the-fly translation.	CometChat No	TalkJS No	Enables integration with third-party cloud providers by facilitating the execution of custom code against messages to perform business logic like on-the-fly translation.
Streaming & queueing	Provides a dependable method to reroute messages from the service to third-party streams and queues for further processing.	CometChat No	TalkJS No	Provides a dependable method to reroute messages from the service to third-party streams and queues for further processing.
Observability services	Enables realtime monitoring and troubleshooting by offering insights into service behavior directly in your observability platform of choice.	CometChat No	TalkJS No	Enables realtime monitoring and troubleshooting by offering insights into service behavior directly in your observability platform of choice.
Security & compliance
API key authentication	Simplifies the authentication code on trusted servers compared to requesting, managing, and refreshing tokens.	CometChat Yes	TalkJS No TalkJS does not rely on API key authentication to secure user sessions or communication with its APIs. Instead, it uses token-based authentication (JWT).	Simplifies the authentication code on trusted servers compared to requesting, managing, and refreshing tokens.
Single Sign-On (SSO) authentication	SSO streamlines login processes, boosts security by minimizing password use, and meets compliance needs for secure data access management.	CometChat Yes	TalkJS No TalkJS does not directly support Single Sign-On (SSO) authentication. Instead, it uses JSON Web Tokens (JWT) for authentication. Read more	SSO streamlines login processes, boosts security by minimizing password use, and meets compliance needs for secure data access management.
Rules for permissions and operations	Provides control over which users can subscribe and publish to certain channels.	CometChat Yes CometChat implements rules for permissions and user control. It features role-based permissions that allow you to manage user actions.	TalkJS Yes Read more	Provides control over which users can subscribe and publish to certain channels.
End-to-end encryption	Ensures that the data transmitted between the client and the API server remains confidential and secure while in transit.	CometChat Yes CometChat implements end-to-end encryption using Virgil E3Kit.	TalkJS No	Ensures that the data transmitted between the client and the API server remains confidential and secure while in transit.
Compliance	Compliance with regulations can impact your ability to meet legal obligations in your industry.	CometChat CometChat is compliant with four security standards: HIPAA GDPR ISO 27001 SOC 2 Type 2 CometChat compliance page	TalkJS TalkJS only complies with the GDPR by acting as a data processor. TalkJS privacy page	Compliance with regulations can impact your ability to meet legal obligations in your industry.