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Claude Opus 4.7 (Fast) vs GPT-5

How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for Claude Opus 4.7 (Fast) and GPT-5.

Anthropic

Claude Opus 4.7 (Fast)

Fast-mode variant of [Opus 4.7](/anthropic/claude-opus-4.7) - identical capabilities with higher output speed at premium 6x pricing. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode

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OpenAI

GPT-5

GPT-5 is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and accuracy...

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Technical Specifications

SpecificationClaude Opus 4.7 (Fast)GPT-5
ProviderAnthropicOpenAI
Context Window1,000,000 tokens400,000 tokens
Agent SuitabilityN/A92/100
Time to First Token (TTFT)N/A320 ms
Deployment Modelmanaged apimanaged api
Production Stabilitybetastable
API AvailableYesYes
Released Date2026-05-122025-08-07

API Pricing Comparison

Input Price per Million Tokens

Claude Opus 4.7 (Fast)

$30.00

GPT-5

$1.25

Output Price per Million Tokens

Claude Opus 4.7 (Fast)

$150.00

GPT-5

$10.00

Want to test both models live?

Run side-by-side prompt prompts in our dynamic Sandbox. Check execution speeds, latency metrics, and compute actual costs in real-time.

Benchmark Performance Metrics

Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.

MMLUGeneral knowledge & multi-task understanding
N/Avs9210.0%
Claude Opus 4.7 (Fast)
GPT-5
HumanEvalPython coding & logic synthesis
N/Avs9400.0%
Claude Opus 4.7 (Fast)
GPT-5
MATHComplex mathematical problem solving
N/Avs8950.0%
Claude Opus 4.7 (Fast)
GPT-5
GPQAGraduate-level expert reasoning
N/Avs7950.0%
Claude Opus 4.7 (Fast)
GPT-5
HellaSwagCommonsense reasoning and inference
N/Avs9850.0%
Claude Opus 4.7 (Fast)
GPT-5
MT-BenchMulti-turn conversation flow quality
N/Avs950.0%
Claude Opus 4.7 (Fast)
GPT-5

Claude Opus 4.7 (Fast) Quirks & Gotchas

No developer gotchas reported.

GPT-5 Quirks & Gotchas

  • Reliable all-rounder — use as default for most production workflows
  • Not recommended for advanced reasoning chains — use o3-mini instead