Model comparison
Claude 2.1 vs Grok 3
Grok 3 is the stronger model overall, scoring 39.9 to 25.2 on the Noometry Index.
Last verified . 4 shared benchmarks.
Summary
- They share 4 benchmarks with published results for both. Claude 2.1 scores higher in 1 category and Grok 3 in 3 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Grok 3 leads 46.2 to 15.4.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 1.9% for Claude 2.1 and 55.6% for Grok 3.
Side by side
| Claude 2.1 | Grok 3 | |
|---|---|---|
| Provider | Anthropic | xAI |
| Noometry Index | 25.2 | 39.9 |
| Released | 2023-11-21 | 2025-04-09 |
| Weights | Proprietary | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 7 | 40 |
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Category by category
Coding Grok 3 leads
Claude 2.1: 26.2 (#327), Grok 3: 41.9 (#115)
| Benchmark | Claude 2.1 | Grok 3 |
|---|---|---|
| WeirdML | 7.1% | 37.2% |
| Aider Polyglot | — | 53.3% |
| LMArena Coding | — | 1432 |
Agentic & Tool Use Not comparable
Claude 2.1: —, Grok 3: 30.5 (#76)
| Benchmark | Claude 2.1 | Grok 3 |
|---|---|---|
| BALROG | — | 29.5% |
Reasoning Claude 2.1 leads
Claude 2.1: 21.4 (#221), Grok 3: 13.7 (#333)
| Benchmark | Claude 2.1 | Grok 3 |
|---|---|---|
| Epoch Capabilities Index | 119.27 | 138.33 |
| ARC-AGI-2 | — | 0% |
| SimpleBench | — | 36.1% |
| Kagi LLM Benchmark | — | 61.3% |
| ARC-AGI-1 | — | 5.5% |
| LMArena Hard Prompts | — | 1434 |
| DTBench | 51% | — |
| ForecastBench | 54.2 | — |
Math Grok 3 leads
Claude 2.1: 10.2 (#315), Grok 3: 38.0 (#145)
| Benchmark | Claude 2.1 | Grok 3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 1.9% | 55.6% |
| Omni-MATH | — | 46.4% |
| LMArena Math | — | 1391 |
| MATH Level 5 | — | 88.7% |
| FrontierMath (Feb 2025 set) | — | 3.8% |
| FrontierMath Tier 4 (v1) | — | 0% |
Knowledge Grok 3 leads
Claude 2.1: 15.4 (#292), Grok 3: 46.2 (#82)
| Benchmark | Claude 2.1 | Grok 3 |
|---|---|---|
| GPQA Diamond | 33% | 75.8% |
| MMLU-Pro | — | 78.8% |
| Confabulations | — | 14.2% |
| Vectara Hallucination Rate | — | 5.8% |
| GPQA (HELM) | — | 65% |
| LMArena Expert | — | 1421 |
| MMLU | 73.5% | — |
Multilingual Not comparable
Claude 2.1: —, Grok 3: 52.3 (#87)
| Benchmark | Claude 2.1 | Grok 3 |
|---|---|---|
| LMArena Non-English | — | 1410 |
| LMArena Chinese | — | 1448 |
| LMArena French | — | 1460 |
| LMArena German | — | 1431 |
| LMArena Japanese | — | 1387 |
| LMArena Korean | — | 1373 |
| LMArena Russian | — | 1416 |
| LMArena Spanish | — | 1417 |
Instruction Following Not comparable
Claude 2.1: —, Grok 3: 75.0 (#73)
| Benchmark | Claude 2.1 | Grok 3 |
|---|---|---|
| IFEval | — | 88.4% |
| LMArena Instruction Following | — | 1409 |
Long Context Not comparable
Claude 2.1: —, Grok 3: 38.7 (#192)
| Benchmark | Claude 2.1 | Grok 3 |
|---|---|---|
| Fiction.LiveBench | — | 58.3% |
| LMArena Longer Query | — | 1439 |
Writing & Preference Not comparable
Claude 2.1: —, Grok 3: 55.8 (#141)
| Benchmark | Claude 2.1 | Grok 3 |
|---|---|---|
| LMArena Text | — | 1426 |
| LMArena Creative Writing | — | 1414 |
| Short-Story Creative Writing | — | 76.4% |
| EQ-Bench Creative Writing | — | 1186 |
| WildBench | — | 84.9% |
| LMArena Multi-Turn | — | 1425 |
Frequently asked questions
Is Claude 2.1 better than Grok 3?
Grok 3 is the stronger model overall, scoring 39.9 to 25.2 on the Noometry Index.
Is Claude 2.1 or Grok 3 better for coding?
Grok 3 scores higher on coding benchmarks: 41.9 versus 26.2 in the Noometry coding category.
How many benchmarks do Claude 2.1 and Grok 3 share?
4 benchmarks have published results for both models. Claude 2.1 has 7 scored results on Noometry and Grok 3 has 40.