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Claude Sonnet 4.5

anthropic/claude-sonnet-4-5-20250929

Anthropic / Claude

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Balanced Claude model for coding, analysis, agent workflows, and cost control

Released
2025-09-29
Context window
200K
Max output
64K
Weights
Closed
Modalities
TextInputImageInputDocumentInputTextOutput
Capabilities
AttachmentsReasoningTool callTemperature
Providers
302.AIAbacusAnthropicAnyAPIAzureAzure Cognitive ServicesCloudflare AI GatewayGitHub CopilotHeliconeJiekou.AIKilo GatewayLLM GatewayMerge GatewayNanoGPTNEAR AI CloudNeonOpenCode ZenOpenRouterOrcaRouterPerplexity AgentPioneerPoeQiHangRequestySnowflake CortexVenice AIVercel AI GatewayZenMux

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