Model comparison
GPT-5.5 Pro vs Nova Premier 1.0
GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 38.3 on the Noometry Index. Nova Premier 1.0 costs 14× less per token, which makes it the better buy when GPT-5.5 Pro's lead doesn't matter for your workload.
Last verified . 0 shared benchmarks.
Summary
- The widest gap is in reasoning, where GPT-5.5 Pro leads 73.3 to 23.0.
- Nova Premier 1.0 is cheaper at $2.50 / $12.50 per million input/output tokens, against $30 / $180 for GPT-5.5 Pro.
- GPT-5.5 Pro accepts more context: 1.05M tokens versus 1M.
Side by side
| GPT-5.5 Pro | Nova Premier 1.0 | |
|---|---|---|
| Provider | OpenAI | Amazon |
| Noometry Index | 64.3 | 38.3 |
| Released | 2026-04-23 | 2025-04-30 |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | 1M |
| Max output | 128K | 10K |
| Input $ / M tokens | $30 | $2.50 |
| Output $ / M tokens | $180 | $12.50 |
| Results tracked | 14 | 6 |
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Category by category
Reasoning GPT-5.5 Pro leads
GPT-5.5 Pro: 73.3 (#10), Nova Premier 1.0: 23.0 (#185)
| Benchmark | GPT-5.5 Pro | Nova Premier 1.0 |
|---|---|---|
| ARC-AGI-2 | 84.6% | — |
| SimpleBench | 76.9% | — |
| Kagi LLM Benchmark | — | 44.8% |
| ARC-AGI-1 | 96.5% | — |
| CritPt | 30.6% | — |
| Chess Puzzles | 64% | — |
| DTBench | 96% | — |
| LMCA | 53.9% | — |
| Epoch Capabilities Index | 162.07 | — |
Math GPT-5.5 Pro leads
GPT-5.5 Pro: 84.0 (#10), Nova Premier 1.0: 33.8 (#199)
| Benchmark | GPT-5.5 Pro | Nova Premier 1.0 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 87.7% | — |
| FrontierMath Tier 4 | 78% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| Omni-MATH | — | 35% |
| FrontierMath (Feb 2025 set) | 52.4% | — |
| FrontierMath Tier 4 (v1) | 39.6% | — |
Knowledge GPT-5.5 Pro leads
GPT-5.5 Pro: 64.1 (#19), Nova Premier 1.0: 35.8 (#180)
| Benchmark | GPT-5.5 Pro | Nova Premier 1.0 |
|---|---|---|
| GPQA Diamond | 93.9% | — |
| MMLU-Pro | — | 72.6% |
| GPQA (HELM) | — | 51.8% |
Instruction Following Not comparable
GPT-5.5 Pro: —, Nova Premier 1.0: 66.8 (#204)
| Benchmark | GPT-5.5 Pro | Nova Premier 1.0 |
|---|---|---|
| IFEval | — | 80.3% |
Writing & Preference Not comparable
GPT-5.5 Pro: —, Nova Premier 1.0: 51.0 (#178)
| Benchmark | GPT-5.5 Pro | Nova Premier 1.0 |
|---|---|---|
| WildBench | — | 78.8% |
Frequently asked questions
Is GPT-5.5 Pro better than Nova Premier 1.0?
GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 38.3 on the Noometry Index. Nova Premier 1.0 costs 14× less per token, which makes it the better buy when GPT-5.5 Pro's lead doesn't matter for your workload.
Which is cheaper, GPT-5.5 Pro or Nova Premier 1.0?
Nova Premier 1.0 is cheaper. It lists at $2.50 per million input tokens and $12.50 per million output tokens; GPT-5.5 Pro lists at $30 and $180.
Which has the bigger context window?
GPT-5.5 Pro does, with 1.05M tokens against 1M.
How many benchmarks do GPT-5.5 Pro and Nova Premier 1.0 share?
0 benchmarks have published results for both models. GPT-5.5 Pro has 14 scored results on Noometry and Nova Premier 1.0 has 6.