Model comparison
GPT-5.5 Pro vs Laguna M.1
GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 31.9 on the Noometry Index.
Last verified . 0 shared benchmarks.
PoolsideSummary
- The widest gap is in math, where GPT-5.5 Pro leads 83.8 to 20.3.
- GPT-5.5 Pro accepts more context: 1.05M tokens versus 262K.
- Laguna M.1 has downloadable open weights; the other is API-only.
Side by side
| GPT-5.5 Pro | Laguna M.1 | |
|---|---|---|
| Provider | OpenAI | Poolside |
| Noometry Index | 64.3 | 31.9 |
| Released | 2026-04-23 | 2026-04-28 |
| Weights | Proprietary | Open |
| Context window | 1.05M | 262K |
| Max output | 128K | 33K |
| 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: —, Laguna M.1: 36.4 (#195)
| Benchmark | GPT-5.5 Pro | Laguna M.1 |
|---|---|---|
| LMArena WebDev | — | 1348 |
Reasoning GPT-5.5 Pro leads
GPT-5.5 Pro: 73.6 (#7), Laguna M.1: 21.9 (#187)
| Benchmark | GPT-5.5 Pro | Laguna M.1 |
|---|---|---|
| ARC-AGI-2 | 84.6% | — |
| SimpleBench | 76.9% | — |
| ARC-AGI-1 | 96.5% | — |
| CritPt | 30.6% | — |
| Chess Puzzles | 64% | — |
| DTBench | 96% | — |
| LMCA | 53.9% | — |
| Surface Evolver Bench | — | 15.6% |
| Epoch Capabilities Index | 162.45 | — |
Math GPT-5.5 Pro leads
GPT-5.5 Pro: 83.8 (#8), Laguna M.1: 20.3 (#276)
| Benchmark | GPT-5.5 Pro | Laguna M.1 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 87.7% | — |
| FrontierMath Tier 4 | 78% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| ProofBench | — | 0% |
| FrontierMath (Feb 2025 set) | 52.4% | — |
| FrontierMath Tier 4 (v1) | 39.6% | — |
Knowledge Not comparable
GPT-5.5 Pro: 64.2 (#17), Laguna M.1: —
| Benchmark | GPT-5.5 Pro | Laguna M.1 |
|---|---|---|
| GPQA Diamond | 93.9% | — |
Frequently asked questions
Is GPT-5.5 Pro better than Laguna M.1?
GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 31.9 on the Noometry Index.
Which has the bigger context window?
GPT-5.5 Pro does, with 1.05M tokens against 262K.
How many benchmarks do GPT-5.5 Pro and Laguna M.1 share?
0 benchmarks have published results for both models. GPT-5.5 Pro has 14 scored results on Noometry and Laguna M.1 has 3.