GPT-5.5 Pro vs GPT-5.5
Side-by-side comparison across metrics, pricing, and overall score — every value traced to a source.
Verdict: GPT-5.5 ranks highest overall (#3) with a score of 52.5.
The best choice still depends on which metrics matter for your workload — per-metric winners are marked below.
What the numbers hide
Computed from the published values below — no estimates, no generated claims.
Fragile verdict
The overall winner flips to GPT-5.5 Pro if Context Window is weighted at 100% (it counts for 18% today). If context window drives your decision, the ranking above may not be your ranking.
Fragile verdict
The overall winner flips to GPT-5.5 Pro if Max Output Tokens is weighted at 100% (it counts for 6% today). If max output tokens drives your decision, the ranking above may not be your ranking.
What nobody reports
Cache Read Price (1 of 2 missing) · SWE-Bench Pro Score (1 of 2 missing) — the questions worth asking vendors directly.
AI hot take
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| Metric | GPT-5.5 ProOpenAI | GPT-5.5OpenAI |
|---|---|---|
| Overall OptiSift Score | 31.9#10 | 52.5#3 |
| Input Price | $30 | $5 |
| Output Price | $180 | $30 |
| Cache Read Price | — | $0.5 |
| Context Window | 1.1M | 1.1M |
| Max Output Tokens | 128K | 128K |
| SWE-Bench Pro Score | — | 58.6% |
| Tool Calling | Yes | Yes |
| Extended Reasoning | Yes | Yes |