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Claude Opus 4.1 vs GPT-4o-mini

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 4.1 and GPT-4o-mini.

Anthropic

Claude Opus 4.1

Claude Opus 4.1 is an updated version of Anthropic’s flagship model, offering improved performance in coding, reasoning, and agentic tasks. It achieves 74.5% on SWE-bench Verified and shows notable gains...

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OpenAI

GPT-4o-mini

GPT-4o mini is OpenAI's newest model after [GPT-4 Omni](/models/openai/gpt-4o), supporting both text and image inputs with text outputs. As their most advanced small model, it is many multiples more affordable...

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Technical Specifications

SpecificationClaude Opus 4.1GPT-4o-mini
ProviderAnthropicOpenAI
Context Window200,000 tokens128,000 tokens
Agent SuitabilityN/A82/100
Time to First Token (TTFT)N/A150 ms
Deployment Modelmanaged apimanaged api
Production Stabilitystablestable
API AvailableYesYes
Released Date2025-08-052024-07-18

API Pricing Comparison

Input Price per Million Tokens

Claude Opus 4.1

$15.00

GPT-4o-mini

$0.15

Output Price per Million Tokens

Claude Opus 4.1

$75.00

GPT-4o-mini

$0.60

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/Avs8200.0%
Claude Opus 4.1
GPT-4o-mini
HumanEvalPython coding & logic synthesis
N/Avs8400.0%
Claude Opus 4.1
GPT-4o-mini
MATHComplex mathematical problem solving
N/Avs7020.0%
Claude Opus 4.1
GPT-4o-mini
GPQAGraduate-level expert reasoning
N/Avs4500.0%
Claude Opus 4.1
GPT-4o-mini
HellaSwagCommonsense reasoning and inference
N/Avs8470.0%
Claude Opus 4.1
GPT-4o-mini
MT-BenchMulti-turn conversation flow quality
N/Avs860.0%
Claude Opus 4.1
GPT-4o-mini

Claude Opus 4.1 Quirks & Gotchas

No developer gotchas reported.

GPT-4o-mini Quirks & Gotchas

  • Ultra-low latency — best TTFT in the OpenAI lineup
  • Tool calling limited to single-step — not suitable for complex agentic pipelines