Reason
#35 in Coding AgentsUnknown · since 2026-10-14 · 2× · last seen Oct 30, 2026
14
Momentum
Reason is a commercial coding agent from Reason Machines (Y Combinator) that works in the cloud or locally, writes code, runs tests and opens pull requests. It is usable from the Mac app, terminal, web and Slack; the official product site is reasonmachines.com.
Momentum trend
02.08.31.10.
Features
| Base Model | Benchmarked on GPT-6 Astra (Reason Agent 1.1 vs. Codex); user choice of models |
| License | Proprietary (Reason Agent); the Reason Network component is Apache-2.0 |
| Platform | Cloud or local; Mac app, terminal, web, Slack, mobile |
| Release Date | October 14, 2026 (Product Hunt launch); Reason Agent 1.1 on October 10, 2026 |
| Interface (IDE/CLI/Web) | Web app, terminal CLI, Mac app, Slack; plus HTTP API |