Model comparison
GPT-5.5 Instant vs Olmo 3.1 32b Instruct
GPT-5.5 Instant is the stronger model overall, scoring 42.5 to 38.8 on the Noometry Index.
Last verified . 16 shared benchmarks.
Allen Institute for AI (Ai2)Summary
- They share 16 benchmarks with published results for both. GPT-5.5 Instant scores higher in 6 categories and Olmo 3.1 32b Instruct in 2 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-5.5 Instant leads 48.9 to 35.4.
- Olmo 3.1 32b Instruct has downloadable open weights; the other is API-only.
Side by side
| GPT-5.5 Instant | Olmo 3.1 32b Instruct | |
|---|---|---|
| Provider | OpenAI | Allen Institute for AI (Ai2) |
| Noometry Index | 42.5 | 38.8 |
| Released | 2026-05-05 | — |
| Weights | Proprietary | Open |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 27 | 16 |
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Category by category
Coding GPT-5.5 Instant leads
GPT-5.5 Instant: 43.7 (#73), Olmo 3.1 32b Instruct: 38.9 (#154)
| Benchmark | GPT-5.5 Instant | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Coding | 1433 | 1346 |
| SciCode | 48.6% | — |
Reasoning Olmo 3.1 32b Instruct leads
GPT-5.5 Instant: 24.2 (#149), Olmo 3.1 32b Instruct: 25.4 (#131)
| Benchmark | GPT-5.5 Instant | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Hard Prompts | 1426 | 1322 |
| CritPt | 0% | — |
| Chess Puzzles | 12% | — |
| Epoch Capabilities Index | 142.48 | — |
Math Olmo 3.1 32b Instruct leads
GPT-5.5 Instant: 26.1 (#241), Olmo 3.1 32b Instruct: 33.6 (#169)
| Benchmark | GPT-5.5 Instant | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Math | 1420 | 1305 |
| 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 (#68), Olmo 3.1 32b Instruct: 35.4 (#175)
| Benchmark | GPT-5.5 Instant | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Expert | 1409 | 1307 |
| GPQA Diamond | 82.5% | — |
Multimodal Not comparable
GPT-5.5 Instant: 39.3 (#48), Olmo 3.1 32b Instruct: —
| Benchmark | GPT-5.5 Instant | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Vision | 1250 | — |
| LMArena Document | 1403 | — |
Multilingual GPT-5.5 Instant leads
GPT-5.5 Instant: 53.0 (#76), Olmo 3.1 32b Instruct: 42.8 (#185)
| Benchmark | GPT-5.5 Instant | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Non-English | 1417 | 1275 |
| LMArena Chinese | 1457 | 1304 |
| LMArena French | 1428 | 1328 |
| LMArena German | 1410 | 1283 |
| LMArena Korean | 1393 | 1206 |
| LMArena Russian | 1430 | 1268 |
| LMArena Spanish | 1430 | 1337 |
| LMArena Japanese | 1408 | — |
Instruction Following GPT-5.5 Instant leads
GPT-5.5 Instant: 74.4 (#94), Olmo 3.1 32b Instruct: 68.8 (#182)
| Benchmark | GPT-5.5 Instant | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Instruction Following | 1407 | 1298 |
Long Context GPT-5.5 Instant leads
GPT-5.5 Instant: 43.4 (#92), Olmo 3.1 32b Instruct: 39.9 (#161)
| Benchmark | GPT-5.5 Instant | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Longer Query | 1422 | 1312 |
Writing & Preference GPT-5.5 Instant leads
GPT-5.5 Instant: 62.0 (#81), Olmo 3.1 32b Instruct: 50.4 (#179)
| Benchmark | GPT-5.5 Instant | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Text | 1419 | 1311 |
| LMArena Creative Writing | 1420 | 1264 |
| LMArena Multi-Turn | 1434 | 1309 |
Frequently asked questions
Is GPT-5.5 Instant better than Olmo 3.1 32b Instruct?
GPT-5.5 Instant is the stronger model overall, scoring 42.5 to 38.8 on the Noometry Index.
Is GPT-5.5 Instant or Olmo 3.1 32b Instruct better for coding?
GPT-5.5 Instant scores higher on coding benchmarks: 43.7 versus 38.9 in the Noometry coding category.
How many benchmarks do GPT-5.5 Instant and Olmo 3.1 32b Instruct share?
16 benchmarks have published results for both models. GPT-5.5 Instant has 27 scored results on Noometry and Olmo 3.1 32b Instruct has 16.