Model comparison
GPT-5.2 Codex vs Laguna M.1
GPT-5.2 Codex is the stronger model overall, scoring 42.6 to 32.5 on the Noometry Index.
Last verified . 1 shared benchmarks.
PoolsideSummary
- They share 1 benchmark with published results for both. GPT-5.2 Codex scores higher in 1 category and Laguna M.1 in 0 categories; one gap is clear of the uncertainty.
- The widest gap is in coding, where GPT-5.2 Codex leads 45.5 to 36.6.
- GPT-5.2 Codex accepts more context: 400K tokens versus 262K.
- Laguna M.1 has downloadable open weights; the other is API-only.
Side by side
| GPT-5.2 Codex | Laguna M.1 | |
|---|---|---|
| Provider | OpenAI | Poolside |
| Noometry Index | 42.6 | 32.5 |
| Released | 2025-12-18 | 2026-04-28 |
| Weights | Proprietary | Open |
| Context window | 400K | 262K |
| Max output | 128K | 33K |
| Input $ / M tokens | $1.75 | — |
| Output $ / M tokens | $14 | — |
| Results tracked | 5 | 3 |
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Category by category
Coding GPT-5.2 Codex leads
GPT-5.2 Codex: 45.5 (#71), Laguna M.1: 36.6 (#204)
| Benchmark | GPT-5.2 Codex | Laguna M.1 |
|---|---|---|
| LMArena WebDev | 1339 | 1349 |
| SWE-bench Verified (bash only) | 72.8% | — |
| SWE-bench Multilingual | 66.3% | — |
| ALE-Bench | 1,300 | — |
Agentic & Tool Use Not comparable
GPT-5.2 Codex: 41.0 (#22), Laguna M.1: —
| Benchmark | GPT-5.2 Codex | Laguna M.1 |
|---|---|---|
| Terminal-Bench | 66.5% | — |
Reasoning Not comparable
GPT-5.2 Codex: —, Laguna M.1: 23.1 (#184)
| Benchmark | GPT-5.2 Codex | Laguna M.1 |
|---|---|---|
| Surface Evolver Bench | — | 15.6% |
Math Not comparable
GPT-5.2 Codex: —, Laguna M.1: 21.1 (#283)
| Benchmark | GPT-5.2 Codex | Laguna M.1 |
|---|---|---|
| ProofBench | — | 0% |
Frequently asked questions
Is GPT-5.2 Codex better than Laguna M.1?
GPT-5.2 Codex is the stronger model overall, scoring 42.6 to 32.5 on the Noometry Index.
Is GPT-5.2 Codex or Laguna M.1 better for coding?
GPT-5.2 Codex scores higher on coding benchmarks: 45.5 versus 36.6 in the Noometry coding category.
Which has the bigger context window?
GPT-5.2 Codex does, with 400K tokens against 262K.
How many benchmarks do GPT-5.2 Codex and Laguna M.1 share?
1 benchmark has published results for both models. GPT-5.2 Codex has 5 scored results on Noometry and Laguna M.1 has 3.