Model comparison
GPT-5.5 Pro vs Nova 2.0 Pro Preview
GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 32.8 on the Noometry Index.
Last verified . 1 shared benchmarks.
Summary
- They share 1 benchmark with published results for both. GPT-5.5 Pro scores higher in 1 category and Nova 2.0 Pro Preview in 0 categories; one gap is clear of the uncertainty.
- The widest gap is in reasoning, where GPT-5.5 Pro leads 73.6 to 21.7.
- The biggest single-benchmark swing is CritPt: 30.6% for GPT-5.5 Pro and 0% for Nova 2.0 Pro Preview.
Side by side
| GPT-5.5 Pro | Nova 2.0 Pro Preview | |
|---|---|---|
| Provider | OpenAI | Amazon |
| Noometry Index | 64.3 | 32.8 |
| Released | 2026-04-23 | 2025-12-02 |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | — |
| Max output | 128K | — |
| Input $ / M tokens | $30 | — |
| Output $ / M tokens | $180 | — |
| Results tracked | 14 | 3 |
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Category by category
Coding Not comparable
GPT-5.5 Pro: —, Nova 2.0 Pro Preview: 40.2 (#130)
| Benchmark | GPT-5.5 Pro | Nova 2.0 Pro Preview |
|---|---|---|
| SciCode | — | 42.7% |
Agentic & Tool Use Not comparable
GPT-5.5 Pro: —, Nova 2.0 Pro Preview: 21.9 (#127)
| Benchmark | GPT-5.5 Pro | Nova 2.0 Pro Preview |
|---|---|---|
| GDP.pdf | — | 2% |
Reasoning GPT-5.5 Pro leads
GPT-5.5 Pro: 73.6 (#7), Nova 2.0 Pro Preview: 21.7 (#189)
| Benchmark | GPT-5.5 Pro | Nova 2.0 Pro Preview |
|---|---|---|
| CritPt | 30.6% | 0% |
| ARC-AGI-2 | 84.6% | — |
| SimpleBench | 76.9% | — |
| ARC-AGI-1 | 96.5% | — |
| Chess Puzzles | 64% | — |
| DTBench | 96% | — |
| LMCA | 53.9% | — |
| Epoch Capabilities Index | 162.45 | — |
Math Not comparable
GPT-5.5 Pro: 83.8 (#8), Nova 2.0 Pro Preview: —
| Benchmark | GPT-5.5 Pro | Nova 2.0 Pro Preview |
|---|---|---|
| FrontierMath (Tiers 1-3) | 87.7% | — |
| FrontierMath Tier 4 | 78% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| FrontierMath (Feb 2025 set) | 52.4% | — |
| FrontierMath Tier 4 (v1) | 39.6% | — |
Knowledge Not comparable
GPT-5.5 Pro: 64.2 (#17), Nova 2.0 Pro Preview: —
| Benchmark | GPT-5.5 Pro | Nova 2.0 Pro Preview |
|---|---|---|
| GPQA Diamond | 93.9% | — |
Frequently asked questions
Is GPT-5.5 Pro better than Nova 2.0 Pro Preview?
GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 32.8 on the Noometry Index.
How many benchmarks do GPT-5.5 Pro and Nova 2.0 Pro Preview share?
1 benchmark has published results for both models. GPT-5.5 Pro has 14 scored results on Noometry and Nova 2.0 Pro Preview has 3.