LLM Comparison
GPT-5.5 vs Claude Opus 4.7
Side-by-side specs, pricing & capabilities · Updated April 2026
Price vs Intelligence
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2/6 models| Organization | ||
| OpenTools Score | 90 5.1 | 71 4.7 |
| Family | GPT | Claude |
| Status | Current | Current |
| Release Date | Apr 2026 | Apr 2026 |
| Context Window | 1.1M tokens | 1.0M tokens |
| Input Price | $5.00/M tokens | $5.00/M tokens |
| Output Price | $30.00/M tokens | $25.00/M tokens |
| Pricing Notes | Cached input: $0.50/M tokens. Long context (>272K tokens): 2x input, 1.5x output. Batch API: 50% discount. Priority: 2.5x standard. | Cache read: $0.5000/M tokens |
| Capabilities | textvisioncodetool-useextended-thinkingcomputer-useweb-search | textvisioncodetool-use |
| Training Cutoff | December 2025 | — |
| Max Output | 128K tokens | 128K tokens |
| API Identifier | openai/gpt-5.5 | anthropic/claude-opus-4.7 |
| Benchmarks | ||
| MMLU | 92.4openai | 84.7anthropic |
| GPQA Diamond | 93.6openai | 94.2anthropic |
| ARC-AGI-2 | 85openai | — |
| Terminal-Bench 2.0 | 82.7openai | — |
| SWE-bench Pro | 58.6openai | 64.3anthropic |
| OSWorld-Verified | 78.7openai | 78anthropic |
| BrowseComp | 84.4openai | 79.3anthropic |
| MMMU-Pro | 81.2openai | — |
| FrontierMath Tier 4 | 35.4openai | — |
| HLE (with tools) | 52.2openai | — |
| GDPval | 84.9openai | — |
| Toolathlon | 55.6openai | — |
| CyberGym | 81.8openai | 73.1anthropic |
| MRCR v2 512K-1M | 74openai | — |
| MMLU-Pro | — | 78.1anthropic |
| MMMLU | — | 92anthropic |
| HLE | — | 54.7artificial-analysis |
| SWE-bench Verified | — | 87.6anthropic |
| SWE-bench Multilingual+Multimodal | — | 80.5anthropic |
| Terminal-Bench | — | 69.4anthropic |
| MCP-Atlas | — | 77.3anthropic |
| Berkeley Function Calling | — | 77.3anthropic |
| CharXiv-R | — | 91anthropic |
| DocVQA | — | 93.1anthropic |
| GDPVal-AA Elo | — | 1753artificial-analysis |
| View GPT-5.5 | View Claude Opus 4.7 | |
Cost Calculator
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| Model | Input | Output | Total / mo | vs Best |
|---|---|---|---|---|
| Claude Opus 4.7Cheapest | $5.00 | $12.50 | $17.50 | — |
| GPT-5.5 | $5.00 | $15.00 | $20.00 | +14% |
OpenAI
GPT-5.5
GPT-5.5 is OpenAI's smartest and most intuitive model, built for agentic work like coding, research, and data analysis. It matches GPT-5.4 per-token latency while delivering higher intelligence with significantly fewer tokens. Supports a 1,050,000 token context window and five reasoning effort levels (none through xhigh).
Anthropic
Claude Opus 4.7
Claude Opus 4.7 is Anthropic's most capable generally available model, with significant improvements in advanced software engineering, agentic tool use, and vision resolution. Achieves 87.6% on SWE-bench Verified and 94.2% on GPQA Diamond. Supports up to 1,000,000 token context window with 3.3x higher-resolution vision than Opus 4.6.
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