Model comparison
Claude Opus 5 vs Grok-2 (Dec 2024)
Claude Opus 5 is the stronger model overall, scoring 67.8 to 33.7 on the Noometry Index.
Last verified . 23 shared benchmarks.
Summary
- They share 23 benchmarks with published results for both. Claude Opus 5 scores higher in 8 categories and Grok-2 (Dec 2024) in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Opus 5 leads 86.2 to 20.8.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 98.9% for Claude Opus 5 and 11.5% for Grok-2 (Dec 2024).
Side by side
| Claude Opus 5 | Grok-2 (Dec 2024) | |
|---|---|---|
| Provider | Anthropic | xAI |
| Noometry Index | 67.8 | 33.7 |
| Released | 2026-07-24 | 2024-08-13 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | — |
| Max output | 128K | — |
| Input $ / M tokens | $5 | — |
| Output $ / M tokens | $25 | — |
| Results tracked | 57 | 34 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Claude Opus 5 leads
Claude Opus 5: 67.5 (#5), Grok-2 (Dec 2024): 33.3 (#258)
| Benchmark | Claude Opus 5 | Grok-2 (Dec 2024) |
|---|---|---|
| WeirdML | 91.8% | 22.2% |
| LMArena Coding | 1534 | 1287 |
| DeepSWE | 73.6% | — |
| FrontierCode | 53.4% | — |
| CursorBench | 46.6% | — |
| LMArena WebDev | 1691 | — |
| FrontierSWE | 52% | — |
| SciCode | 56.4% | — |
| LiveBench Coding | — | 46.4% |
| ALE-Bench | 2,165 | — |
Agentic & Tool Use Not comparable
Claude Opus 5: 55.6 (#1), Grok-2 (Dec 2024): —
| Benchmark | Claude Opus 5 | Grok-2 (Dec 2024) |
|---|---|---|
| APEX-Agents | 65.8% | — |
| OSWorld 2.0 | 31.4% | — |
| τ²-bench Banking | 48.7% | — |
| PostTrainBench | 35% | — |
| BALROG | 63.4% | — |
| GBAEval | 79.6% | — |
| GDP.pdf | 24% | — |
| Vending-Bench 2 | 11,182 | — |
Reasoning Claude Opus 5 leads
Claude Opus 5: 77.2 (#4), Grok-2 (Dec 2024): 16.9 (#299)
| Benchmark | Claude Opus 5 | Grok-2 (Dec 2024) |
|---|---|---|
| SimpleBench | 80.6% | 22.7% |
| LMArena Hard Prompts | 1526 | 1272 |
| DTBench | 97.9% | 65.2% |
| Epoch Capabilities Index | 162.78 | 130.48 |
| ARC-AGI-2 | 90.4% | — |
| NYT Connections (extended) | 94.3% | — |
| ARC-AGI-1 | 97.5% | — |
| CritPt | 29.1% | — |
| Chess Puzzles | 42% | — |
| EBR-Bench | 45.7% | — |
| LiveBench Reasoning | — | 54.8% |
| Mystery Game Puzzles | 59% | — |
| LiveBench Data Analysis | — | 54.5% |
| LMCA | 64.5% | — |
| Bench to the Future 3 | 0.12 | — |
| LiveBench | — | 54.3% |
Math Claude Opus 5 leads
Claude Opus 5: 86.2 (#8), Grok-2 (Dec 2024): 20.8 (#284)
| Benchmark | Claude Opus 5 | Grok-2 (Dec 2024) |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 98.9% | 11.5% |
| LMArena Math | 1531 | 1283 |
| FrontierMath (Tiers 1-3) | 85.6% | — |
| FrontierMath Tier 4 | 73.2% | — |
| ProofBench | 99% | — |
| LiveBench Math | — | 54.9% |
| MATH Level 5 | — | 63.5% |
| FrontierMath (Feb 2025 set) | — | 0.7% |
Knowledge Claude Opus 5 leads
Claude Opus 5: 66.8 (#9), Grok-2 (Dec 2024): 29.8 (#233)
| Benchmark | Claude Opus 5 | Grok-2 (Dec 2024) |
|---|---|---|
| GPQA Diamond | 93.9% | 53.8% |
| LMArena Expert | 1557 | 1254 |
| SimpleQA Verified | 59.9% | — |
| Confabulations | — | 20.1% |
Multimodal Not comparable
Claude Opus 5: 50.8 (#8), Grok-2 (Dec 2024): —
| Benchmark | Claude Opus 5 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Vision | 1319 | — |
| Blueprint-Bench 2 | 30.4% | — |
| Furniture Assembly | 60.8% | — |
| LMArena Document | 1516 | — |
Multilingual Claude Opus 5 leads
Claude Opus 5: 58.8 (#4), Grok-2 (Dec 2024): 43.1 (#188)
| Benchmark | Claude Opus 5 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Non-English | 1501 | 1282 |
| LMArena Chinese | 1574 | 1289 |
| LMArena French | 1519 | 1318 |
| LMArena German | 1524 | 1287 |
| LMArena Japanese | 1516 | 1244 |
| LMArena Korean | 1521 | 1237 |
| LMArena Russian | 1507 | 1286 |
| LMArena Spanish | 1519 | 1281 |
Instruction Following Claude Opus 5 leads
Claude Opus 5: 79.2 (#7), Grok-2 (Dec 2024): 66.9 (#202)
| Benchmark | Claude Opus 5 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Instruction Following | 1517 | 1270 |
| LiveBench Instruction Following | — | 69.6% |
Long Context Claude Opus 5 leads
Claude Opus 5: 46.5 (#21), Grok-2 (Dec 2024): 38.8 (#190)
| Benchmark | Claude Opus 5 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Longer Query | 1515 | 1276 |
Writing & Preference Claude Opus 5 leads
Claude Opus 5: 79.2 (#1), Grok-2 (Dec 2024): 48.6 (#198)
| Benchmark | Claude Opus 5 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Text | 1507 | 1305 |
| LMArena Creative Writing | 1491 | 1284 |
| LMArena Multi-Turn | 1499 | 1290 |
| Short-Story Creative Writing | — | 63.6% |
| EQ-Bench Creative Writing | 2133 | — |
| EQ-Bench 4 | 1385 | — |
| LiveBench Language | — | 45.6% |
Frequently asked questions
Is Claude Opus 5 better than Grok-2 (Dec 2024)?
Claude Opus 5 is the stronger model overall, scoring 67.8 to 33.7 on the Noometry Index.
Is Claude Opus 5 or Grok-2 (Dec 2024) better for coding?
Claude Opus 5 scores higher on coding benchmarks: 67.5 versus 33.3 in the Noometry coding category.
How many benchmarks do Claude Opus 5 and Grok-2 (Dec 2024) share?
23 benchmarks have published results for both models. Claude Opus 5 has 57 scored results on Noometry and Grok-2 (Dec 2024) has 34.