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Claude Opus 4 vs GPT-4.1

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 and GPT-4.1.

Anthropic

Claude Opus 4

Claude Opus 4 is benchmarked as the world’s best coding model, at time of release, bringing sustained performance on complex, long-running tasks and agent workflows. It sets new benchmarks in...

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OpenAI

GPT-4.1

GPT-4.1 is a flagship large language model optimized for advanced instruction following, real-world software engineering, and long-context reasoning. It supports a 1 million token context window and outperforms GPT-4o and...

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Technical Specifications

SpecificationClaude Opus 4GPT-4.1
ProviderAnthropicOpenAI
Context Window200,000 tokens1,047,576 tokens
Agent SuitabilityN/A91/100
Time to First Token (TTFT)N/A250 ms
Deployment Modelmanaged apimanaged api
Production Stabilitystablestable
API AvailableYesYes
Released Date2025-05-222025-04-14

API Pricing Comparison

Input Price per Million Tokens

Claude Opus 4

$15.00

GPT-4.1

$2.00

Output Price per Million Tokens

Claude Opus 4

$75.00

GPT-4.1

$8.00

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
9050.0%vsN/A
Claude Opus 4
GPT-4.1
HumanEvalPython coding & logic synthesis
9300.0%vsN/A
Claude Opus 4
GPT-4.1
MATHComplex mathematical problem solving
8540.0%vsN/A
Claude Opus 4
GPT-4.1
GPQAGraduate-level expert reasoning
7230.0%vsN/A
Claude Opus 4
GPT-4.1
HellaSwagCommonsense reasoning and inference
9650.0%vsN/A
Claude Opus 4
GPT-4.1
MT-BenchMulti-turn conversation flow quality
945.0%vsN/A
Claude Opus 4
GPT-4.1

Claude Opus 4 Quirks & Gotchas

No developer gotchas reported.

GPT-4.1 Quirks & Gotchas

  • Strong tool-calling reliability — good migration path from GPT-4o
  • Migrate to GPT-5 for larger context window and improved reasoning