Fable 5.1 released: Agentic coding tasks solved at half the cost
airesearch12 · x · 2026-09-02
Fable 5.1 and Mythos 5.1 have been released. The update focuses on token efficiency, with Fable 5.1 solving agentic coding tasks at roughly half the cost of the previous version, while also offering speed improvements. The author notes a more natural writing style in the new models.
Related event: Anthropic Releases Claude Fable 5.1 and Mythos 5.1 with Big Cost Cuts(17 posts)→
More from coding & agent
- Thrixel Build World lets AI agents create playable 3D games — RanaHanocka · 2026-09-02
- Claude + Thrixel build full Roblox games from a single prompt — RanaHanocka · 2026-09-02
- Vespper launches DOCX MCP for faster, cheaper agent doc editing — ycombinator · 2026-09-02
- Reef: Open-Source Infra for Self-Improving Agents via Inference Signals — pliang279 · 2026-09-02
- Agent retried for 16 hours silently? Author introspects durable runtime with Postgres persistence — slateraligator · 2026-09-02
- Copilot vs Claude Code: Which burns fewer tokens under identical conditions? — alex_bababu · 2026-09-02