GPT-5.5 vs Claude Opus 5.5
Compare GPT-5.5 vs Claude Opus 5.5 API pricing, token costs, context windows, and latency. See which model is cheaper and better for your stack.
GPT-5.5 charges $5.00/1M input and $30.00/1M output tokens, compared to Claude Opus 5.5 at $4.00/1M input and $20.00/1M output. Claude Opus 5.5 is 1.3x cheaper on input tokens. In reasoning benchmarks, Claude Opus 5.5 holds the higher AA Intelligence Index rating. For latency-critical streaming, GPT-5.5 delivers 79 t/s (39.0s TTFT) while Claude Opus 5.5 provides 112 t/s (351.0s TTFT).
Full Metric & Specification Comparison
| Metric | GPT-5.5 | Claude Opus 5.5 | Advantage |
|---|---|---|---|
| Provider | OpenAI | Anthropic | - |
| Input Token Cost (1M) | $5.000 | $4.000 | Claude Opus 5.5 |
| Output Token Cost (1M) | $30.000 | $20.000 | Claude Opus 5.5 |
| Context Window | 922k tokens | 1,000k tokens | Claude Opus 5.5 |
| AA Intelligence Index | Unrated | 59/100 | Unrated |
| Streaming Latency | Moderate | Fast | - |
Key Architectural Takeaways
- Input Token Cost: GPT-5.5 is $5.00/1M vs Claude Opus 5.5 at $4.00/1M
- Output Token Cost: GPT-5.5 is $30.00/1M vs Claude Opus 5.5 at $20.00/1M
- Context Window: GPT-5.5 supports 922k tokens vs Claude Opus 5.5 with 1,000k tokens
- Benchmark Intelligence Rating: not rated for one or both models
- Inference Latency: GPT-5.5 is rated Moderate vs Claude Opus 5.5 rated Fast
Calculate Your Team's Exact Bill Difference
Drag the sliders below to see real-time cost divergences based on your daily token consumption.
Deploying Claude Opus 5.5 over GPT-5.5 saves $90.00/mo ($1080/yr) at this volume.
Frequently Asked Questions
Is GPT-5.5 cheaper than Claude Opus 5.5?
Claude Opus 5.5 is significantly more economical, charging $4.00/1M input compared to $5.00/1M for GPT-5.5.
Which model should I choose for production?
If your primary constraint is API cost and high query throughput, choose Claude Opus 5.5. If you require peak reasoning accuracy and complex tool use, Claude Opus 5.5 is recommended.
How does context window compare between GPT-5.5 and Claude Opus 5.5?
Claude Opus 5.5 offers the larger context window (1,000k tokens), allowing you to pass significantly larger codebases or documents without chunking.
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