YC-backed Reason claims frontier coding performance at up to 20x lower cost

Scobleizer · x · 2026-11-13

Reason Machines (YC F26) launched Reason, an agent harness claiming to beat top harnesses like Codex and Devin on Terminal-Bench and DeepSWE (59.1% with GPT-6 Astra) while cutting per-task cost to a fraction of the frontier baseline — up to 20x cheaper. It unifies coding agents (Reason, Claude Code, Codex, Cursor) in one app and offers an API for launching sessions from scripts or CI. Vendor-reported benchmarks, unverified; distribution is a classic comment-for-early-access push.

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