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GPT-6 Astra Is Here, Discovery of a new OpenAI agent message board, Anthropic launches Claude Fable 5.1 and says it's up to 45 percent cheaper for agentic work, and more!
Last Week in AI published a tool update. This is an app that runs a model (a harness). It can change how you start a setup.
Claude Fable 5.1 is on the cloud board. List cost is $10 in and $50 out per million tokens.
Try Claude Fable 5.1. Copy the OpenRouter call.
curl https://openrouter.ai/api/v1/chat/completions \
-H "Authorization: Bearer $OPENROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"anthropic/claude-fable-5.1","messages":[{"role":"user","content":"Hello"}]}'Published 2026-09-07T13:02:49.000Z. FitStack shortens the story so you can decide. The source owns the detail.