LLM Reference

Claude 3.5 Sonnet v2 vs Claude 3.7 Sonnet

Claude 3.5 Sonnet v2 (2025) and Claude 3.7 Sonnet (2024) are frontier reasoning models from Anthropic. Claude 3.5 Sonnet v2 ships a 200k-token context window, while Claude 3.7 Sonnet ships a 200k-token context window. On pricing, Claude 3.7 Sonnet costs $3/1M input tokens versus $6/1M for the alternative. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.

Claude 3.7 Sonnet is ~100% cheaper at $3/1M; pay for Claude 3.5 Sonnet v2 only for vision-heavy evaluation.

Decision scorecard

Local evidence first
SignalClaude 3.5 Sonnet v2Claude 3.7 Sonnet
Best formultimodal apps and provider-routed productionreasoning-heavy apps, multimodal apps, and tool-calling agents
Decision fitRAG, Long context, and VisionCoding, RAG, and Agents
Context window200k200k
Cheapest output$30/1M tokens$15/1M tokens
Provider routes2 tracked6 tracked
Shared benchmarks0 shared0 shared

Decision tradeoffs

Choose Claude 3.5 Sonnet v2 when...
  • Local decision data tags Claude 3.5 Sonnet v2 for RAG, Long context, and Vision.
Choose Claude 3.7 Sonnet when...
  • Claude 3.7 Sonnet has the lower cheapest tracked output price at $15/1M tokens.
  • Claude 3.7 Sonnet has broader tracked provider coverage for fallback and route flexibility.
  • Claude 3.7 Sonnet uniquely exposes Reasoning, JSON / Tool use, and Code execution in local model data.
  • Local decision data tags Claude 3.7 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.

Lower estimate Claude 3.7 Sonnet

Claude 3.5 Sonnet v2

$12,300

Cheapest tracked route/tier: AWS Bedrock

Claude 3.7 Sonnet

$6,150

Cheapest tracked route/tier: GCP Vertex AI

Estimated monthly gap: $6,150. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.

Switch friction

Claude 3.5 Sonnet v2 -> Claude 3.7 Sonnet
  • Provider overlap exists on AWS Bedrock and Anthropic; start route-level A/B tests there.
  • Claude 3.7 Sonnet is $15/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
  • Claude 3.7 Sonnet adds Reasoning, JSON / JSON / Tool use, and Code execution in local capability data.
Claude 3.7 Sonnet -> Claude 3.5 Sonnet v2
  • Provider overlap exists on AWS Bedrock and Anthropic; start route-level A/B tests there.
  • Claude 3.5 Sonnet v2 is $15/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
  • Check replacement coverage for Reasoning, JSON / JSON / Tool use, and Code execution before moving production traffic.

Specs

Specification
Released2025-12-012024-03-04
Context window200k200k
Parameters——
Architecture-Decoder Only
LicenseProprietaryProprietary
OpennessProprietaryProprietary
WeightsNot releasedNot released
CodeUnknownUnknown
Commercial useCommercial use: conditionalCommercial use: conditional
Knowledge cutoff2024-042024-11

Pricing and availability

Pricing attributeClaude 3.5 Sonnet v2Claude 3.7 Sonnet
Input price$6/1M tokens$3/1M tokens
Output price$30/1M tokens$15/1M tokens
Providers
AWS BedrockAnthropic
Snowflake CortexGCP Vertex AIReplicate APIOpenRouterAWS BedrockAnthropic

Capabilities

CapabilityClaude 3.5 Sonnet v2Claude 3.7 Sonnet
VisionYesYes
MultimodalYesYes
ReasoningNoYes
JSON / Tool useNoYes
Structured outputsYesYes
Code executionNoYes
IDE integrationNoNo
Computer useNoNo
Parallel agentsNoNo

Benchmarks

No shared benchmark scores are currently available for this pair.

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