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Anthropic: Claude Sonnet 5.5 (batch) launched — 2026-09-28 19:00:20 UTC

OpenRouter · Detected 2026-09-28T19:00:20.461Z

Original source: https://openrouter.ai/api/v1/models

LAUNCHED

Before: Not present

After: Anthropic: Claude Sonnet 5.5 (batch)

These values are captured from the named source, confirmed on consecutive observations, and held for six hours to screen rapid reversals. OpenRouter-listed changes describe its catalog, not necessarily a direct provider price change.

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