Claude Sonnet 4.5

HOT

Previous best combination of speed and intelligence for complex agents and coding

200K context·$3.00 in·$15.00 out·Sep 2025 release·Vision, Tools / functions, Web search

Available on

Anthropic OpenRouter AWS Bedrock

Providers

Where Claude Sonnet 4.5 runs in Big-AGI, with each service's own model ID and USD-per-1M-token rates. The summary above prefers the creator's claim; rates below are each service's own.

ServiceModel IDContextInputOutputCache read

Anthropic

creator

claude-sonnet-4-5-20250929

200K

$3.00

$15.00

$0.30

OpenRouter

anthropic/claude-sonnet-4.5

$3.00

$15.00

$0.30

AWS Bedrock

us.anthropic.claude-sonnet-4-5-20250929-v1:0

200K

$3.00

$15.00

$0.30

Usage mix in Big-AGI: OpenRouter 52% · Anthropic 47%Specs as reported by each service · usage over the last 2 days · refreshed hourly

Run Claude Sonnet 4.5 in Big-AGI.

Connect your own key on any of the services above, at their rates, no markup - and run it side by side with every other model.

Launch Big-AGI

BIG-AGI

Product

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Resources

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