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llm-anthropic 0.31

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 10/11/2026, 00:42:24 UTC.

Briefings

Anthropic released Fable 5.2 and Mythos 5.2 on November 9, 2026, adding them to the llm-anthropic tool. Testing revealed a token exhaustion bug where prompts requesting images at the max reasoning level failed to return results after 128,000 tokens, unlike previous versions. The evidence is limited to a single user test run and does not confirm this is a widespread issue across all users.

Key points

• Anthropic released Fable 5.2 and Mythos 5.2 on November 9, 2026, via the llm-anthropic tool.
• A token exhaustion bug caused max reasoning level prompts to fail after 128,000 tokens, unlike prior versions.

Context

Anthropic's Fable series is a collection of LLMs designed for creative tasks. This release includes Fable 5.2 and Mythos 5.2, which were added to the llm-anthropic tool for testing purposes.

Limitations

Evidence is limited to a single user test run. The bug may not affect all users, and the specific failure mode (token exhaustion) is not confirmed for other reasoning levels or prompt types.

Generated by Bittrees-hosted qwen35-2b sha256:aaf42c8b7c3c on 10/11/2026, 01:20:09 UTC. Based on publisher-provided feed evidence; may not cover the full original article. Check the source for details.

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