Claude Opus 4.5 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 4.5 and GPT-4.1.
Claude Opus 4.5
Claude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use. It offers strong multimodal capabilities, competitive performance across real-world coding and...
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...
Technical Specifications
| Specification | Claude Opus 4.5 | GPT-4.1 |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Context Window | 200,000 tokens | 1,047,576 tokens |
| Agent Suitability | 93/100 | 91/100 |
| Time to First Token (TTFT) | 550 ms | 250 ms |
| Deployment Model | managed api | managed api |
| Production Stability | stable | stable |
| API Available | Yes | Yes |
| Released Date | 2025-11-24 | 2025-04-14 |
API Pricing Comparison
Input Price per Million Tokens
Claude Opus 4.5
$5.00
GPT-4.1
$2.00
Output Price per Million Tokens
Claude Opus 4.5
$25.00
GPT-4.1
$8.00
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Benchmark Performance Metrics
Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.
Claude Opus 4.5 Quirks & Gotchas
- ▸Deep analytical reasoning — best for structured problem-solving
- ▸200K context is limiting compared to 1M of Opus 4.6+ — upgrade for long-document tasks
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