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Claude Opus 4.1 vs GPT-4o

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.

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

GPT-4o ("o" for "omni") is OpenAI's latest AI model, supporting both text and image inputs with text outputs. It maintains the intelligence level of [GPT-4 Turbo](/models/openai/gpt-4-turbo) while being twice as...

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Technical Specifications

SpecificationClaude Opus 4.1GPT-4o
ProviderAnthropicOpenAI
Context Window200,000 tokens128,000 tokens
Agent SuitabilityN/A90/100
Time to First Token (TTFT)N/A280 ms
Deployment Modelmanaged apimanaged api
Production Stabilitystablestable
API AvailableYesYes
Released Date2025-08-052024-05-13

API Pricing Comparison

Input Price per Million Tokens

Claude Opus 4.1

$15.00

GPT-4o

$2.50

Output Price per Million Tokens

Claude Opus 4.1

$75.00

GPT-4o

$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/Avs8870.0%
Claude Opus 4.1
GPT-4o
HumanEvalPython coding & logic synthesis
N/Avs9020.0%
Claude Opus 4.1
GPT-4o
MATHComplex mathematical problem solving
N/Avs7660.0%
Claude Opus 4.1
GPT-4o
GPQAGraduate-level expert reasoning
N/Avs5360.0%
Claude Opus 4.1
GPT-4o
HellaSwagCommonsense reasoning and inference
N/Avs8870.0%
Claude Opus 4.1
GPT-4o
MT-BenchMulti-turn conversation flow quality
N/Avs930.0%
Claude Opus 4.1
GPT-4o

Claude Opus 4.1 Quirks & Gotchas

No developer gotchas reported.

GPT-4o Quirks & Gotchas

  • Strong multimodal performance — best vision+tool calling combo
  • Legacy model — migrate to GPT-5 for latest improvements