Model comparison
Claude Opus 4.5 vs Laguna M.1
Claude Opus 4.5 is the stronger model overall, scoring 50.5 to 31.9 on the Noometry Index.
Last verified . 2 shared benchmarks.
PoolsideSummary
- They share 2 benchmarks with published results for both. Claude Opus 4.5 scores higher in 3 categories and Laguna M.1 in 0 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Claude Opus 4.5 leads 42.5 to 21.9.
- The biggest single-benchmark swing is ProofBench: 36% for Claude Opus 4.5 and 0% for Laguna M.1.
- Laguna M.1 accepts more context: 262K tokens versus 200K.
- Laguna M.1 has downloadable open weights; the other is API-only.
Side by side
| Claude Opus 4.5 | Laguna M.1 | |
|---|---|---|
| Provider | Anthropic | Poolside |
| Noometry Index | 50.5 | 31.9 |
| Released | 2025-11-01 | 2026-04-28 |
| Weights | Proprietary | Open |
| Context window | 200K | 262K |
| Max output | 64K | 33K |
| Input $ / M tokens | $5 | — |
| Output $ / M tokens | $25 | — |
| Results tracked | 69 | 3 |
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Category by category
Coding Claude Opus 4.5 leads
Claude Opus 4.5: 55.4 (#21), Laguna M.1: 36.4 (#195)
| Benchmark | Claude Opus 4.5 | Laguna M.1 |
|---|---|---|
| LMArena WebDev | 1493 | 1348 |
| SWE-bench Verified | 76.7% | — |
| SWE-bench Verified (bash only) | 76.8% | — |
| SWE-bench Multilingual | 70.7% | — |
| GSO | 26.5% | — |
| WeirdML | 63.7% | — |
| LMArena Coding | 1504 | — |
| ALE-Bench | 1,025 | — |
| AlgoTune | 1.77 | — |
Agentic & Tool Use Not comparable
Claude Opus 4.5: 47.2 (#11), Laguna M.1: —
| Benchmark | Claude Opus 4.5 | Laguna M.1 |
|---|---|---|
| Terminal-Bench | 63.1% | — |
| Berkeley Function Calling Leaderboard | 77.5% | — |
| GDPval | 45.5% | — |
| Remote Labor Index | 3.8% | — |
| τ²-bench Airline | 84% | — |
| τ²-bench Banking | 24.7% | — |
| τ²-bench Retail | 79.6% | — |
| τ²-bench Telecom | 92.3% | — |
| Cybench | 82% | — |
| DeepResearch Bench | 54.8% | — |
| OSWorld | 66.3% | — |
| BALROG | 43.5% | — |
| LMArena Search | 1180 | — |
| METR Time Horizons | 75% | — |
| Vending-Bench 2 | 4,967 | — |
Reasoning Claude Opus 4.5 leads
Claude Opus 4.5: 42.5 (#43), Laguna M.1: 21.9 (#187)
| Benchmark | Claude Opus 4.5 | Laguna M.1 |
|---|---|---|
| ARC-AGI-2 | 37.6% | — |
| SimpleBench | 62% | — |
| Kagi LLM Benchmark | 80.2% | — |
| NYT Connections (extended) | 52.5% | — |
| ARC-AGI-1 | 80% | — |
| Chess Puzzles | 12% | — |
| EnigmaEval | 11.9% | — |
| EBR-Bench | 14.3% | — |
| LMArena Hard Prompts | 1476 | — |
| Mystery Game Puzzles | 22% | — |
| DTBench | 89.9% | — |
| LMCA | 44.5% | — |
| Surface Evolver Bench | — | 15.6% |
| Epoch Capabilities Index | 150.1 | — |
| ForecastBench | 60.7 | — |
Math Claude Opus 4.5 leads
Claude Opus 4.5: 38.5 (#85), Laguna M.1: 20.3 (#276)
| Benchmark | Claude Opus 4.5 | Laguna M.1 |
|---|---|---|
| ProofBench | 36% | 0% |
| FrontierMath (Tiers 1-3) | 34.4% | — |
| FrontierMath Tier 4 | 4.9% | — |
| OTIS Mock AIME 2024-2025 | 86.1% | — |
| LMArena Math | 1463 | — |
| FrontierMath (Feb 2025 set) | 20.7% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge Not comparable
Claude Opus 4.5: 56.4 (#38), Laguna M.1: —
| Benchmark | Claude Opus 4.5 | Laguna M.1 |
|---|---|---|
| GPQA Diamond | 86% | — |
| Humanity's Last Exam | 25.2% | — |
| SimpleQA Verified | 45.7% | — |
| Vectara Hallucination Rate | 10.9% | — |
| LMArena Expert | 1488 | — |
Multimodal Not comparable
Claude Opus 4.5: 31.1 (#99), Laguna M.1: —
| Benchmark | Claude Opus 4.5 | Laguna M.1 |
|---|---|---|
| GeoBench | 75% | — |
| VPCT | 40% | — |
| Furniture Assembly | 28.3% | — |
| LMArena Document | 1462 | — |
Multilingual Not comparable
Claude Opus 4.5: 54.5 (#45), Laguna M.1: —
| Benchmark | Claude Opus 4.5 | Laguna M.1 |
|---|---|---|
| LMArena Non-English | 1438 | — |
| LMArena Chinese | 1470 | — |
| LMArena French | 1471 | — |
| LMArena German | 1449 | — |
| LMArena Japanese | 1415 | — |
| LMArena Korean | 1424 | — |
| LMArena Russian | 1448 | — |
| LMArena Spanish | 1455 | — |
Instruction Following Not comparable
Claude Opus 4.5: 77.7 (#20), Laguna M.1: —
| Benchmark | Claude Opus 4.5 | Laguna M.1 |
|---|---|---|
| LMArena Instruction Following | 1478 | — |
Long Context Not comparable
Claude Opus 4.5: 46.4 (#21), Laguna M.1: —
| Benchmark | Claude Opus 4.5 | Laguna M.1 |
|---|---|---|
| CL-bench | 21.1% | — |
| LMArena Longer Query | 1480 | — |
Writing & Preference Not comparable
Claude Opus 4.5: 68.2 (#28), Laguna M.1: —
| Benchmark | Claude Opus 4.5 | Laguna M.1 |
|---|---|---|
| LMArena Text | 1451 | — |
| LMArena Creative Writing | 1445 | — |
| EQ-Bench Creative Writing | 1687 | — |
| LMArena Multi-Turn | 1466 | — |
Frequently asked questions
Is Claude Opus 4.5 better than Laguna M.1?
Claude Opus 4.5 is the stronger model overall, scoring 50.5 to 31.9 on the Noometry Index.
Is Claude Opus 4.5 or Laguna M.1 better for coding?
Claude Opus 4.5 scores higher on coding benchmarks: 55.4 versus 36.4 in the Noometry coding category.
Which has the bigger context window?
Laguna M.1 does, with 262K tokens against 200K.
How many benchmarks do Claude Opus 4.5 and Laguna M.1 share?
2 benchmarks have published results for both models. Claude Opus 4.5 has 69 scored results on Noometry and Laguna M.1 has 3.