Anthropic: Claude Sonnet 5.5

anthropic/claude-sonnet-5.5
Compare Open in Chat

Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. It is especially strong at building features, fixing bugs, and producing...

Modalities
Text + Image + File → Text
Input / Output Price$2.00 / $10.00From · per 1M tokens · see provider prices
Context1Mtokens · maximum across providers
ReleasedSep 28, 2026Public catalog metadata
Availability & data sources Listed in CLSSAI · 8 reference endpoints
CLSSAI API · Directory listedCatalog preview · Exact metadata
ACCESS

Where this model works

Catalog preview and CLSSAI API routing are independent decisions with separate sources.

Catalog previewTestable in Playground
Testable

Exact capability metadata is available. CLSSAI can prepare the Image understanding request without guessing the model contract.

Evidence
Exact ID anthropic/claude-sonnet-5.5 · /chat/completions
Mapped mode
Image understanding
CLSSAI APICallable through CLSSAI API
Callable

The exact model ID is listed in the current CLSSAI public directory. This proves current route eligibility, not a completed inference for every mode.

Evidence
Exact ID anthropic/claude-sonnet-5.5 is directory-listed
Vision test status

The request contract and frontend path are ready. A real recorded output has not yet been captured for this exact model and mode.

Request contract
Build verified
/chat/completions · Schema tests · 2026-08-05
Frontend path
Available
Vision form · 2026-08-05
Real model output
Not yet verified
No keyed smoke-test record

Providers

Compare published prices and endpoint capabilities. Select a provider for context limits, caching prices and supported parameters.

8 providers
$2$10$0.2----99.99%
$2$10$0.2----100.00%
$2$10$0.2----99.99%
$2$10$0.2----99.99%
$2$10$0.2----100.00%
$2.2$11$0.22------
$2.2$11$0.22------
$2.2$11$0.22----100.00%

USD per 1M tokens. Prices and metrics describe catalog endpoints, not CLSSAI routing. “--” means no measurement was supplied. Uptime: last 30 minutes.

Pricing

Published base rates across providers, in USD per 1M tokens. Actual cost depends on the provider, caching and prompt length.

Input / 1M tokens$2 – $2.2
Output / 1M tokens$10 – $11
Cache read / 1M tokens$0.2 – $0.22

Effective Pricing: request-weighted costs and historical prices are not supplied by the public source.

Performance

Latency and throughput history are not supplied by the public endpoint API. Check the catalog for its latest performance charts.

Uptime

Successful requests in the last 30 minutes, as reported by the catalog. A snapshot does not show historical reliability.

Google Global99.99%
Amazon Bedrock100.00%
Azure Global99.99%
Claude Platform on AWS99.99%
Anthropic100.00%
Google Europe100.00%

Benchmarks

No scored evaluations are included in the public model metadata. View the source for benchmarks and their methodology.

Apps

Application rankings require verified traffic data, which is not included in this source.

Activity

Historical token and request volumes are not supplied by the public API. The catalog shows activity on its own network.

Frequently asked questions

Provider availability, context limits and API capabilities.

Which providers serve Anthropic: Claude Sonnet 5.5?

Google Global, Amazon Bedrock, Azure Global, Claude Platform on AWS, Anthropic, Google (US), Azure (US), Google Europe are listed in the public reference data. Check CLSSAI availability above before making a request.

What context length is available for Anthropic: Claude Sonnet 5.5?

The largest available context window is 1,000,000 tokens.

Which API parameters does Anthropic: Claude Sonnet 5.5 support?

The providers list 12 distinct supported parameters. Open an endpoint row to inspect them.

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