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Claude 3.7 Sonnet vs Claude 3.5 Sonnet

Claude 3.7 Sonnet (2024) and Claude 3.5 Sonnet (2024) are frontier-tier reasoning models from Anthropic. Claude 3.7 Sonnet ships a 200K-token context window, while Claude 3.5 Sonnet ships a 200K-token context window. On MMLU PRO, Claude 3.7 Sonnet leads by 3.1 pts. On pricing, Claude 3.7 Sonnet costs $3/1M input tokens versus $3/1M for the alternative. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit.

Pick Claude 3.7 Sonnet for general evaluation; Claude 3.5 Sonnet is better when coding workflow support matters more.

Specs

Specification
Released2024-03-042024-06-20
Context window200K200K
Parameters—70B
Architecturedecoder onlydecoder only
LicenseProprietaryUnknown
Knowledge cutoff2024-112024-04

Pricing and availability

Pricing attributeClaude 3.7 SonnetClaude 3.5 Sonnet
Input price$3/1M tokens$3/1M tokens
Output price$15/1M tokens$15/1M tokens
Providers
Snowflake CortexGCP Vertex AIReplicate APIOpenRouterAWS BedrockAnthropic
GCP Vertex AIAWS BedrockAnthropicOpenRouterMicrosoft FoundryReplicate API

Capabilities

CapabilityClaude 3.7 SonnetClaude 3.5 Sonnet
VisionYesYes
MultimodalYesYes
ReasoningYesYes
Function callingYesYes
Tool useYesNo
Structured outputsYesYes
Code executionYesYes

Benchmarks

BenchmarkClaude 3.7 SonnetClaude 3.5 Sonnet
MMLU PRO80.377.2
SWE-bench Verified70.349.0
HumanEval93.092.0
LiveCodeBench68.948.7
Aider Polyglot64.951.6
Massive Multi-discipline Multimodal Understanding75.068.3

Deep dive

On shared benchmark coverage, MMLU PRO has Claude 3.7 Sonnet at 80.3 and Claude 3.5 Sonnet at 77.2, with Claude 3.7 Sonnet ahead by 3.1 points; SWE-bench Verified has Claude 3.7 Sonnet at 70.3 and Claude 3.5 Sonnet at 49, with Claude 3.7 Sonnet ahead by 21.3 points; HumanEval has Claude 3.7 Sonnet at 93 and Claude 3.5 Sonnet at 92, with Claude 3.7 Sonnet ahead by 1 points. The largest visible gap is 21.3 points on SWE-bench Verified, which matters most when that benchmark mirrors your workload. Treat isolated benchmark wins as directional, because provider routing, prompt style, and tool access can move real application results.

The capability footprint differs most on tool use: Claude 3.7 Sonnet. Both models share vision, multimodal input, reasoning mode, and function calling, so the practical split is not just feature count. Use those differences to decide whether the page is about raw model quality, agentic coding support, multimodal ingestion, or predictable structured API behavior.

For cost, Claude 3.7 Sonnet lists $3/1M input and $15/1M output tokens, while Claude 3.5 Sonnet lists $3/1M input and $15/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Claude 3.7 Sonnet lower by about $0 per million blended tokens. Availability is 6 providers versus 6, so concentration risk also matters.

Choose Claude 3.7 Sonnet when coding workflow support are central to the workload. Choose Claude 3.5 Sonnet when coding workflow support are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship.

FAQ

Which has a larger context window, Claude 3.7 Sonnet or Claude 3.5 Sonnet?

Claude 3.7 Sonnet supports 200K tokens, while Claude 3.5 Sonnet supports 200K tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.

Which is cheaper, Claude 3.7 Sonnet or Claude 3.5 Sonnet?

Claude 3.7 Sonnet is cheaper on tracked token pricing. Claude 3.7 Sonnet costs $3/1M input and $15/1M output tokens. Claude 3.5 Sonnet costs $3/1M input and $15/1M output tokens. Provider discounts or batch pricing can still change the final bill.

Is Claude 3.7 Sonnet or Claude 3.5 Sonnet open source?

Claude 3.7 Sonnet is listed under Proprietary. Claude 3.5 Sonnet is listed under Unknown. License labels affect whether you can self-host, redistribute weights, or rely only on hosted APIs, so confirm the upstream license before deployment.

Which is better for vision, Claude 3.7 Sonnet or Claude 3.5 Sonnet?

Both Claude 3.7 Sonnet and Claude 3.5 Sonnet expose vision. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface.

Which is better for multimodal input, Claude 3.7 Sonnet or Claude 3.5 Sonnet?

Both Claude 3.7 Sonnet and Claude 3.5 Sonnet expose multimodal input. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface.

Where can I run Claude 3.7 Sonnet and Claude 3.5 Sonnet?

Claude 3.7 Sonnet is available on Snowflake Cortex, GCP Vertex AI, Replicate API, OpenRouter, and AWS Bedrock. Claude 3.5 Sonnet is available on GCP Vertex AI, AWS Bedrock, Anthropic, OpenRouter, and Microsoft Foundry. Provider coverage can affect latency, region availability, compliance posture, and fallback options.

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Last reviewed: 2026-05-11. Data sourced from public model cards and provider documentation.