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[ARTICLE · art-141363] src=llmstatus.ai ↗ pub= topic=large-language-models verified=true sentiment=· neutral

New model: Claude Sonnet 5.5 (Google)

Google released Claude Sonnet 5.5 on 2026-09-28, a model with a 1000k-token context window, 128k maximum output, and text, image, and PDF input support, according to the provider announcement listed on models.dev. The model carries no announced retirement date and is available under the identifiers claude-sonnet-5-5@default and google/claude-sonnet-5-5@default.

read1 min views1 publishedSep 29, 2026
New model: Claude Sonnet 5.5 (Google)
Image: Llmstatus (auto-discovered)

GG● Healthy

Google · claude-sonnet-5-5@default

Released2026-09-28

Retiresno announced date

claude-sonnettext+image+pdf1000k context128k max out

also matches:

`claude-sonnet-5-5@default`` google/claude-sonnet-5-5@default`
[provider announcement →](https://models.dev/google-vertex/claude-sonnet-5-5@default)

Does your code call Claude Sonnet 5.5?

$ curl -fsSL https://llmstatus.ai/install.sh | bash

Then mm status in any repo — it finds every model you use and flags the ones on a clock. No account, nothing uploaded.

Get alerted before it retires →

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