Observed source change · Anthropic

Claude exact model identities and documented context/output documentation changed

Published documentation; runtime behavior and legal interpretation not established.

Last unchanged check: 2026-10-22T01:05:08Z
First changed check: 2026-10-22T03:10:08Z

Before

* **Engaging responses:** Claude models are ideal for applications that require rich, human-like interactions. If you prefer more concise responses, adjust your prompts to guide the model toward the desired output length. Refer to the [prompt engineering guides](https://platform.claude.com/docs/en/build-with-claude/prompt-engineering) for details.

After

* **Engaging responses:** Claude models are ideal for applications that require rich, human-like interactions. If you prefer more concise responses, adjust your prompts to guide the model toward the output length you want. Refer to the [prompt engineering guides](https://platform.claude.com/docs/en/build-with-claude/prompt-engineering) for details.

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Raw before SHA-256: 86d26d2b1f39ff97f686ebf6633042048886b26ece5a1214a4b8a3352a35f692
Raw after SHA-256: 968e6bc022276fe6d4cefa24f19ebfffcd8f25e5adf358d32612da16f694bd8e

Full source responses are retained in the private evidence archive. Public excerpts show changed wording and may be truncated. The observed interval does not establish the vendor’s exact edit time. Hashes identify retained bytes; they are not an independent timestamp certificate.

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