Model comparison
GPT-5.5 Pro vs Nova 2 Lite
GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 39.7 on the Noometry Index. Nova 2 Lite costs 79× 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 math, where GPT-5.5 Pro leads 84.0 to 37.5.
- Nova 2 Lite is cheaper at $0.30 / $2.50 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 2 Lite | |
|---|---|---|
| Provider | OpenAI | Amazon |
| Noometry Index | 64.3 | 39.7 |
| Released | 2026-04-23 | 2025-12-01 |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | 1M |
| Max output | 128K | 64K |
| Input $ / M tokens | $30 | $0.30 |
| Output $ / M tokens | $180 | $2.50 |
| Results tracked | 14 | 19 |
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Category by category
Coding Not comparable
GPT-5.5 Pro: —, Nova 2 Lite: 40.7 (#134)
| Benchmark | GPT-5.5 Pro | Nova 2 Lite |
|---|---|---|
| LMArena Coding | — | 1385 |
Agentic & Tool Use Not comparable
GPT-5.5 Pro: —, Nova 2 Lite: 24.1 (#121)
| Benchmark | GPT-5.5 Pro | Nova 2 Lite |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 27.1% |
Reasoning GPT-5.5 Pro leads
GPT-5.5 Pro: 73.3 (#10), Nova 2 Lite: 27.5 (#118)
| Benchmark | GPT-5.5 Pro | Nova 2 Lite |
|---|---|---|
| ARC-AGI-2 | 84.6% | — |
| SimpleBench | 76.9% | — |
| ARC-AGI-1 | 96.5% | — |
| CritPt | 30.6% | — |
| Chess Puzzles | 64% | — |
| LMArena Hard Prompts | — | 1364 |
| DTBench | 96% | — |
| LMCA | 53.9% | — |
| Epoch Capabilities Index | 162.07 | — |
Math GPT-5.5 Pro leads
GPT-5.5 Pro: 84.0 (#10), Nova 2 Lite: 37.5 (#156)
| Benchmark | GPT-5.5 Pro | Nova 2 Lite |
|---|---|---|
| FrontierMath (Tiers 1-3) | 87.7% | — |
| FrontierMath Tier 4 | 78% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| LMArena Math | — | 1359 |
| 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 2 Lite: 43.0 (#94)
| Benchmark | GPT-5.5 Pro | Nova 2 Lite |
|---|---|---|
| GPQA Diamond | 93.9% | — |
| Vectara Hallucination Rate | — | 5.1% |
| LMArena Expert | — | 1358 |
Multilingual Not comparable
GPT-5.5 Pro: —, Nova 2 Lite: 47.1 (#153)
| Benchmark | GPT-5.5 Pro | Nova 2 Lite |
|---|---|---|
| LMArena Non-English | — | 1337 |
| LMArena Chinese | — | 1364 |
| LMArena French | — | 1381 |
| LMArena German | — | 1343 |
| LMArena Japanese | — | 1271 |
| LMArena Korean | — | 1284 |
| LMArena Russian | — | 1343 |
| LMArena Spanish | — | 1373 |
Instruction Following Not comparable
GPT-5.5 Pro: —, Nova 2 Lite: 70.5 (#161)
| Benchmark | GPT-5.5 Pro | Nova 2 Lite |
|---|---|---|
| LMArena Instruction Following | — | 1335 |
Long Context Not comparable
GPT-5.5 Pro: —, Nova 2 Lite: 40.6 (#150)
| Benchmark | GPT-5.5 Pro | Nova 2 Lite |
|---|---|---|
| LMArena Longer Query | — | 1335 |
Writing & Preference Not comparable
GPT-5.5 Pro: —, Nova 2 Lite: 53.9 (#154)
| Benchmark | GPT-5.5 Pro | Nova 2 Lite |
|---|---|---|
| LMArena Text | — | 1362 |
| LMArena Creative Writing | — | 1291 |
| LMArena Multi-Turn | — | 1338 |
Frequently asked questions
Is GPT-5.5 Pro better than Nova 2 Lite?
GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 39.7 on the Noometry Index. Nova 2 Lite costs 79× 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 2 Lite?
Nova 2 Lite is cheaper. It lists at $0.30 per million input tokens and $2.50 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 2 Lite share?
0 benchmarks have published results for both models. GPT-5.5 Pro has 14 scored results on Noometry and Nova 2 Lite has 19.