LLM Reference

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, both list $3/1M input and $15/1M output tokens on the cheapest tracked route. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.

Pick Claude 3.7 Sonnet for general evaluation; token pricing is tied, so keep Claude 3.5 Sonnet only for already-validated prompts or route constraints.

Decision scorecard

Local evidence first
SignalClaude 3.7 SonnetClaude 3.5 Sonnet
Best forreasoning-heavy apps, multimodal apps, and tool-calling agentsreasoning-heavy apps, multimodal apps, and tool-calling agents
Decision fitCoding, RAG, and AgentsCoding, RAG, and Agents
Context window200k200k
Cheapest output$15/1M tokens$15/1M tokens
Provider routes6 tracked6 tracked
Shared benchmarksMMLU PRO leader6 shared

Decision tradeoffs

Choose Claude 3.7 Sonnet when...
  • Claude 3.7 Sonnet holds a shared-benchmark lead on MMLU PRO, ahead by 3.1 points.
  • Local decision data tags Claude 3.7 Sonnet for Coding, RAG, and Agents.
Choose Claude 3.5 Sonnet when...
  • Local decision data tags Claude 3.5 Sonnet for Coding, RAG, and Agents.

Monthly cost at traffic

Estimate token spend from the cheapest tracked input and output route or tier on this page.

Same estimate Tie

Claude 3.7 Sonnet

$6,150

Cheapest tracked route/tier: GCP Vertex AI

Claude 3.5 Sonnet

$6,150

Cheapest tracked route/tier: GCP Vertex AI

Estimated monthly gap: $0.00. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.

Switch friction

Claude 3.7 Sonnet -> Claude 3.5 Sonnet
  • Provider overlap exists on GCP Vertex AI, AWS Bedrock, and Anthropic; start route-level A/B tests there.
  • Cheapest tracked output pricing is tied, so migration risk shifts to quality, latency, and provider packaging.
Claude 3.5 Sonnet -> Claude 3.7 Sonnet
  • Provider overlap exists on GCP Vertex AI, Replicate API, and OpenRouter; start route-level A/B tests there.
  • Cheapest tracked output pricing is tied, so migration risk shifts to quality, latency, and provider packaging.

Specs

Specification
Released2024-03-042024-06-20
Context window200k200k
Parameters—70B
ArchitectureDecoder OnlyDecoder Only
LicenseProprietaryProprietary
OpennessProprietaryProprietary
WeightsNot releasedNot released
CodeUnknownUnknown
Commercial useCommercial use: conditionalCommercial use: conditional
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
JSON / Tool useYesYes
Structured outputsYesYes
Code executionYesYes
IDE integrationNoNo
Computer useNoNo
Parallel agentsNoNo

Benchmarks

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

Continue comparing

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Last reviewed: 2026-07-26. Data sourced from public model cards and provider documentation.