Model comparison
GPT-5.5 Instant vs Nova 2 Lite
GPT-5.5 Instant is the stronger model overall, scoring 42.7 to 39.7 on the Noometry Index.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. GPT-5.5 Instant scores higher in 6 categories and Nova 2 Lite in 2 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Nova 2 Lite leads 37.5 to 26.5.
Side by side
| GPT-5.5 Instant | Nova 2 Lite | |
|---|---|---|
| Provider | OpenAI | Amazon |
| Noometry Index | 42.7 | 39.7 |
| Released | 2026-05-05 | 2025-12-01 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1M |
| Max output | — | 64K |
| Input $ / M tokens | — | $0.30 |
| Output $ / M tokens | — | $2.50 |
| Results tracked | 27 | 19 |
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Category by category
Coding GPT-5.5 Instant leads
GPT-5.5 Instant: 44.3 (#74), Nova 2 Lite: 40.7 (#134)
| Benchmark | GPT-5.5 Instant | Nova 2 Lite |
|---|---|---|
| LMArena Coding | 1433 | 1385 |
| SciCode | 48.6% | — |
Agentic & Tool Use Not comparable
GPT-5.5 Instant: —, Nova 2 Lite: 24.1 (#121)
| Benchmark | GPT-5.5 Instant | Nova 2 Lite |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 27.1% |
Reasoning Nova 2 Lite leads
GPT-5.5 Instant: 24.9 (#155), Nova 2 Lite: 27.5 (#118)
| Benchmark | GPT-5.5 Instant | Nova 2 Lite |
|---|---|---|
| LMArena Hard Prompts | 1426 | 1364 |
| CritPt | 0% | — |
| Chess Puzzles | 12% | — |
| Epoch Capabilities Index | 142.52 | — |
Math Nova 2 Lite leads
GPT-5.5 Instant: 26.5 (#259), Nova 2 Lite: 37.5 (#156)
| Benchmark | GPT-5.5 Instant | Nova 2 Lite |
|---|---|---|
| LMArena Math | 1420 | 1359 |
| FrontierMath (Tiers 1-3) | 26.3% | — |
| FrontierMath Tier 4 | 2.4% | — |
| OTIS Mock AIME 2024-2025 | 68.1% | — |
Knowledge GPT-5.5 Instant leads
GPT-5.5 Instant: 48.9 (#74), Nova 2 Lite: 43.0 (#94)
| Benchmark | GPT-5.5 Instant | Nova 2 Lite |
|---|---|---|
| LMArena Expert | 1409 | 1358 |
| GPQA Diamond | 82.5% | — |
| Vectara Hallucination Rate | — | 5.1% |
Multimodal Not comparable
GPT-5.5 Instant: 40.0 (#52), Nova 2 Lite: —
| Benchmark | GPT-5.5 Instant | Nova 2 Lite |
|---|---|---|
| LMArena Vision | 1250 | — |
| LMArena Document | 1403 | — |
Multilingual GPT-5.5 Instant leads
GPT-5.5 Instant: 52.8 (#80), Nova 2 Lite: 47.1 (#153)
| Benchmark | GPT-5.5 Instant | Nova 2 Lite |
|---|---|---|
| LMArena Non-English | 1417 | 1337 |
| LMArena Chinese | 1456 | 1364 |
| LMArena French | 1428 | 1381 |
| LMArena German | 1411 | 1343 |
| LMArena Japanese | 1408 | 1271 |
| LMArena Korean | 1392 | 1284 |
| LMArena Russian | 1431 | 1343 |
| LMArena Spanish | 1429 | 1373 |
Instruction Following GPT-5.5 Instant leads
GPT-5.5 Instant: 74.2 (#100), Nova 2 Lite: 70.5 (#161)
| Benchmark | GPT-5.5 Instant | Nova 2 Lite |
|---|---|---|
| LMArena Instruction Following | 1406 | 1335 |
Long Context GPT-5.5 Instant leads
GPT-5.5 Instant: 43.4 (#96), Nova 2 Lite: 40.6 (#150)
| Benchmark | GPT-5.5 Instant | Nova 2 Lite |
|---|---|---|
| LMArena Longer Query | 1422 | 1335 |
Writing & Preference GPT-5.5 Instant leads
GPT-5.5 Instant: 61.8 (#85), Nova 2 Lite: 53.9 (#154)
| Benchmark | GPT-5.5 Instant | Nova 2 Lite |
|---|---|---|
| LMArena Text | 1419 | 1362 |
| LMArena Creative Writing | 1419 | 1291 |
| LMArena Multi-Turn | 1433 | 1338 |
Frequently asked questions
Is GPT-5.5 Instant better than Nova 2 Lite?
GPT-5.5 Instant is the stronger model overall, scoring 42.7 to 39.7 on the Noometry Index.
Is GPT-5.5 Instant or Nova 2 Lite better for coding?
GPT-5.5 Instant scores higher on coding benchmarks: 44.3 versus 40.7 in the Noometry coding category.
How many benchmarks do GPT-5.5 Instant and Nova 2 Lite share?
17 benchmarks have published results for both models. GPT-5.5 Instant has 27 scored results on Noometry and Nova 2 Lite has 19.