LLM Reference

Claude Opus 4.7 vs o3 Mini

Claude Opus 4.7 (2026) and o3 Mini (2025) are frontier-tier reasoning models from Anthropic and OpenAI. Claude Opus 4.7 ships a 1m-token context window, while o3 Mini ships a 200k-token context window. On SWE-bench Verified, Claude Opus 4.7 leads by 38.3 pts. On pricing, o3 Mini costs $1.10/1M input tokens versus $5/1M 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.

o3 Mini is ~355% cheaper at $1.10/1M; pay for Claude Opus 4.7 only for coding workflow support.

Decision scorecard

Local evidence first
SignalClaude Opus 4.7o3 Mini
Best forreasoning-heavy apps, multimodal apps, and tool-calling agentsreasoning-heavy apps, tool-calling agents, and provider-routed production
Decision fitCoding, RAG, and AgentsCoding, RAG, and Agents
Context window1m200k
Cheapest output$25/1M tokens$4.40/1M tokens
Provider routes6 tracked4 tracked
Shared benchmarksSWE-bench Verified leader3 shared

Decision tradeoffs

Choose Claude Opus 4.7 when...
  • Claude Opus 4.7 holds a shared-benchmark lead on SWE-bench Verified, ahead by 38.3 points.
  • Claude Opus 4.7 has the larger context window for long prompts, retrieval packs, or transcript analysis.
  • Claude Opus 4.7 has broader tracked provider coverage for fallback and route flexibility.
  • Claude Opus 4.7 uniquely exposes Vision and Multimodal in local model data.
  • Local decision data tags Claude Opus 4.7 for Coding, RAG, and Agents.
Choose o3 Mini when...
  • o3 Mini has the lower cheapest tracked output price at $4.40/1M tokens.
  • Local decision data tags o3 Mini 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 o3 Mini

Claude Opus 4.7

$10,250

Cheapest tracked route/tier: Anthropic

o3 Mini

$1,980

Cheapest tracked route/tier: OpenRouter

Estimated monthly gap: $8,270. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.

Switch friction

Claude Opus 4.7 -> o3 Mini
  • Provider overlap exists on OpenRouter and Vercel AI Gateway; start route-level A/B tests there.
  • o3 Mini is $20.60/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
  • Check replacement coverage for Vision and Multimodal before moving production traffic.
o3 Mini -> Claude Opus 4.7
  • Provider overlap exists on OpenRouter and Vercel AI Gateway; start route-level A/B tests there.
  • Claude Opus 4.7 is $20.60/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
  • Claude Opus 4.7 adds Vision and Multimodal in local capability data.

Specs

Specification
Released2026-04-162025-01-31
Context window1m200k
Parameters——
ArchitectureDecoder OnlyDecoder Only
LicenseProprietaryProprietary
OpennessProprietaryProprietary
WeightsNot releasedNot released
CodeUnknownUnknown
Commercial useCommercial use: conditionalCommercial use: conditional
Knowledge cutoff2026-012025-04

Pricing and availability

Pricing attributeClaude Opus 4.7o3 Mini
Input price$5/1M tokens$1.10/1M tokens
Output price$25/1M tokens$4.40/1M tokens
Providers
AnthropicAWS BedrockGCP Vertex AIMicrosoft FoundryOpenRouterVercel AI Gateway
OpenRouterAzure OpenAIOpenAI APIVercel AI Gateway

Capabilities

CapabilityClaude Opus 4.7o3 Mini
VisionYesNo
MultimodalYesNo
ReasoningYesYes
JSON / Tool useYesYes
Structured outputsYesYes
Code executionYesYes
IDE integrationNoNo
Computer useNoNo
Parallel agentsNoNo

Benchmarks

BenchmarkClaude Opus 4.7o3 Mini
SWE-bench Verified87.649.3
Google-Proof Q&A94.279.7
Chatbot Arena1503.01335.0

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