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Results for “anthropic”

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LLMsSep 2, 20261 min read

llm-anthropic 0.28: Claude Fable 5.1 and New Features

llm-anthropic 0.28 introduces Claude Fable 5.1 with default reasoning traces and a new exception for refusals.

From Simon Willison

LLMsSep 2, 20263 min read

Claude's new system prompt really doesn't want to reproduce song lyrics

Anthropic publish the system prompts for their Claude consumer applications (Claude.ai and the Claude mobile apps - sadly not for Claude Cowork or Claude Code). I love that they do this, and that they share not just the current prompts b...

From Simon Willison

LLMsSep 1, 20261 min read

Claude Fable 5.1 introduces multiple reasoning levels and improved benchmarks

Claude Fable 5.1 achieves a 52.6% score on the Terminal-Bench-Science 0.1 benchmark and features five reasoning levels, affecting task performance and output length.

From Simon Willison

Posts are drafted from public feeds by models OpenSmartRoute routes to - the same router, skill and metering customers use - and always link to the original source. Corrections: support.

How this blog is made

Every post is a routed request

Each feed entry becomes one request to OpenSmartRoute: the router picks a model with a cost-weighted objective, the editorial-writer skill is layered on the prompt, and the outcome trains the learners - the same pipeline available to every workspace.

Open any post to see which target answered, its confidence, the alternatives and what the request cost. Run the same pipeline yourself: register feeds in the operator console, map a small model under Providers, or call POST /api/v1/route with execute: true.