| Price from | $29/mo | $279/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | Yes | — |
| Plans published | 4 | 3 |
| Spec score · Chat APIs | 8.7 (#1) | 7.6 (#27) |
| Spec score · Chat Api | 8.7 (#1) | 7.6 (#17) |
| Founded | 2016 | 2016 |
| Headquarters | London, UK | Eindhoven, Netherlands |
| Integrations | Ably lists integrations including AWS Lambda, Azure Functions, Cloudflare Workers, Google Cloud Functions, Kafka, Zapier, and Terraform. | TalkJS lists integrations and tutorials for Daily, Mux, Zoom, Webflow, WordPress, Memberstack, ChatGPT, Gemini, Claude, Adalo, and Bildr. |
| Product | Ably Chat is a chat API and SDK platform for building realtime chat applications at scale. | TalkJS provides a chat API, SDKs, and pre-built user interfaces for adding messaging to apps and websites. |
| Security | Ably states that client-to-server communication is secured by TLS by default and that optional private-key encryption uses 256-bit AES. | TalkJS says it is ISO 27001 certified and GDPR compliant, and that data is encrypted in transit and at rest. |
| Support | The Free package includes community and email support on a best-effort basis; Standard lists a one-day email support SLA. | Basic includes chat support during office hours, Growth includes priority chat and email, and Enterprise includes priority phone, chat, and email support. |
