Model comparison
Claude 2.1 vs Gemini 3.1 Pro Preview
Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 25.2 on the Noometry Index.
Last verified . 6 shared benchmarks.
GoogleSummary
- They share 6 benchmarks with published results for both. Claude 2.1 scores higher in 0 categories and Gemini 3.1 Pro Preview in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Gemini 3.1 Pro Preview leads 71.8 to 15.4.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 1.9% for Claude 2.1 and 95.6% for Gemini 3.1 Pro Preview.
Side by side
| Claude 2.1 | Gemini 3.1 Pro Preview | |
|---|---|---|
| Provider | Anthropic | |
| Noometry Index | 25.2 | 56.7 |
| Released | 2023-11-21 | 2026-02-19 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1.05M |
| Max output | — | 66K |
| Input $ / M tokens | — | $2 |
| Output $ / M tokens | — | $12 |
| Results tracked | 7 | 71 |
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Category by category
Coding Gemini 3.1 Pro Preview leads
Claude 2.1: 26.2 (#327), Gemini 3.1 Pro Preview: 42.5 (#99)
| Benchmark | Claude 2.1 | Gemini 3.1 Pro Preview |
|---|---|---|
| WeirdML | 7.1% | 72.1% |
| SWE-bench Verified | — | 75.6% |
| DeepSWE | — | 11.7% |
| LMArena WebDev | — | 1447 |
| SciCode | — | 58.9% |
| GSO | — | 22.6% |
| LMArena Coding | — | 1484 |
| MirrorCode | — | 8.9% |
| ALE-Bench | — | 1,161 |
| AlgoTune | — | 2.02 |
Agentic & Tool Use Not comparable
Claude 2.1: —, Gemini 3.1 Pro Preview: 37.7 (#34)
| Benchmark | Claude 2.1 | Gemini 3.1 Pro Preview |
|---|---|---|
| Terminal-Bench | — | 80.2% |
| APEX-Agents | — | 35.3% |
| τ²-bench Banking | — | 26% |
| DeepResearch Bench | — | 47.8% |
| PostTrainBench | — | 22% |
| BALROG | — | 57% |
| ExploitBench | — | 26.1% |
| GBAEval | — | 0.8% |
| GDP.pdf | — | 17% |
| LMArena Search | — | 1211 |
| METR Time Horizons | — | 77% |
| Vending-Bench 2 | — | 3,774 |
Reasoning Gemini 3.1 Pro Preview leads
Claude 2.1: 21.4 (#221), Gemini 3.1 Pro Preview: 71.7 (#12)
| Benchmark | Claude 2.1 | Gemini 3.1 Pro Preview |
|---|---|---|
| DTBench | 51% | 97.1% |
| Epoch Capabilities Index | 119.27 | 154.77 |
| ForecastBench | 54.2 | 59 |
| ARC-AGI-2 | — | 77.1% |
| SimpleBench | — | 79.6% |
| NYT Connections (extended) | — | 97.4% |
| ARC-AGI-1 | — | 98% |
| CritPt | — | 17.7% |
| Chess Puzzles | — | 55% |
| EnigmaEval | — | 36.8% |
| Thematic Generalization | — | 79.4% |
| EBR-Bench | — | 14.3% |
| LMArena Hard Prompts | — | 1485 |
| Mystery Game Puzzles | — | 34% |
| LMCA | — | 53.8% |
Math Gemini 3.1 Pro Preview leads
Claude 2.1: 10.2 (#315), Gemini 3.1 Pro Preview: 62.1 (#34)
| Benchmark | Claude 2.1 | Gemini 3.1 Pro Preview |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 1.9% | 95.6% |
| FrontierMath (Tiers 1-3) | — | 59.6% |
| FrontierMath Tier 4 | — | 26.8% |
| MathArena Final-Answer Competitions | — | 86.5% |
| ProofBench | — | 26% |
| LMArena Math | — | 1485 |
| FrontierMath (Feb 2025 set) | — | 36.9% |
| FrontierMath Tier 4 (v1) | — | 16.7% |
Knowledge Gemini 3.1 Pro Preview leads
Claude 2.1: 15.4 (#292), Gemini 3.1 Pro Preview: 71.8 (#3)
| Benchmark | Claude 2.1 | Gemini 3.1 Pro Preview |
|---|---|---|
| GPQA Diamond | 33% | 94.4% |
| Humanity's Last Exam | — | 46.4% |
| SimpleQA Verified | — | 73.5% |
| Vectara Hallucination Rate | — | 10.4% |
| LMArena Expert | — | 1485 |
| MMLU | 73.5% | — |
Multimodal Not comparable
Claude 2.1: —, Gemini 3.1 Pro Preview: 37.9 (#69)
| Benchmark | Claude 2.1 | Gemini 3.1 Pro Preview |
|---|---|---|
| LMArena Vision | — | 1296 |
| Blueprint-Bench 2 | — | 26.5% |
| Furniture Assembly | — | 26.7% |
| LMArena Document | — | 1444 |
Multilingual Not comparable
Claude 2.1: —, Gemini 3.1 Pro Preview: 57.0 (#12)
| Benchmark | Claude 2.1 | Gemini 3.1 Pro Preview |
|---|---|---|
| LMArena Non-English | — | 1477 |
| LMArena Chinese | — | 1529 |
| LMArena French | — | 1487 |
| LMArena German | — | 1491 |
| LMArena Japanese | — | 1493 |
| LMArena Korean | — | 1455 |
| LMArena Russian | — | 1498 |
| LMArena Spanish | — | 1479 |
Instruction Following Not comparable
Claude 2.1: —, Gemini 3.1 Pro Preview: 77.0 (#32)
| Benchmark | Claude 2.1 | Gemini 3.1 Pro Preview |
|---|---|---|
| LMArena Instruction Following | — | 1466 |
Long Context Not comparable
Claude 2.1: —, Gemini 3.1 Pro Preview: 47.4 (#18)
| Benchmark | Claude 2.1 | Gemini 3.1 Pro Preview |
|---|---|---|
| CL-bench | — | 20.8% |
| CL-bench Life | — | 16.9% |
| LMArena Longer Query | — | 1483 |
Writing & Preference Not comparable
Claude 2.1: —, Gemini 3.1 Pro Preview: 66.1 (#37)
| Benchmark | Claude 2.1 | Gemini 3.1 Pro Preview |
|---|---|---|
| LMArena Text | — | 1481 |
| LMArena Creative Writing | — | 1482 |
| EQ-Bench Creative Writing | — | 1491 |
| EQ-Bench 4 | — | 1142 |
| LMArena Multi-Turn | — | 1488 |
Frequently asked questions
Is Claude 2.1 better than Gemini 3.1 Pro Preview?
Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 25.2 on the Noometry Index.
Is Claude 2.1 or Gemini 3.1 Pro Preview better for coding?
Gemini 3.1 Pro Preview scores higher on coding benchmarks: 42.5 versus 26.2 in the Noometry coding category.
How many benchmarks do Claude 2.1 and Gemini 3.1 Pro Preview share?
6 benchmarks have published results for both models. Claude 2.1 has 7 scored results on Noometry and Gemini 3.1 Pro Preview has 71.