Model comparison
Gemini 2.5 Pro vs Grok Build 0.1
Gemini 2.5 Pro is the stronger model overall, scoring 44.9 to 35.8 on the Noometry Index. Grok Build 0.1 costs 2.8× less per token, which makes it the better buy when Gemini 2.5 Pro's lead doesn't matter for your workload.
Last verified . 2 shared benchmarks.
GoogleSummary
- They share 2 benchmarks with published results for both. Gemini 2.5 Pro scores higher in 2 categories and Grok Build 0.1 in 1 category; 2 gaps are clear of the uncertainty.
- The widest gap is in agentic & tool use, where Gemini 2.5 Pro leads 29.1 to 22.5.
- The biggest single-benchmark swing is SciCode: 42.8% for Gemini 2.5 Pro and 50.2% for Grok Build 0.1.
- Grok Build 0.1 is cheaper at $1 / $2 per million input/output tokens, against $1.25 / $10 for Gemini 2.5 Pro.
- Gemini 2.5 Pro accepts more context: 1.05M tokens versus 256K.
Side by side
| Gemini 2.5 Pro | Grok Build 0.1 | |
|---|---|---|
| Provider | xAI | |
| Noometry Index | 44.9 | 35.8 |
| Released | 2025-03-25 | 2026-04-16 |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | 256K |
| Max output | 66K | 256K |
| Input $ / M tokens | $1.25 | $1 |
| Output $ / M tokens | $10 | $2 |
| Results tracked | 78 | 3 |
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Category by category
Coding Too close to call
Gemini 2.5 Pro: 42.8 (#86), Grok Build 0.1: 42.5 (#90)
| Benchmark | Gemini 2.5 Pro | Grok Build 0.1 |
|---|---|---|
| SciCode | 42.8% | 50.2% |
| SWE-bench Verified | 57.6% | — |
| SWE-bench Verified (bash only) | 53.6% | — |
| Aider Polyglot | 83.1% | — |
| LMArena WebDev | 1227 | — |
| GSO | 3.9% | — |
| WeirdML | 54% | — |
| LiveBench Coding | 85.9% | — |
| LMArena Coding | 1452 | — |
| CadEval | 64% | — |
| ALE-Bench | 785.52 | — |
| AlgoTune | 1.51 | — |
Agentic & Tool Use Gemini 2.5 Pro leads
Gemini 2.5 Pro: 29.1 (#81), Grok Build 0.1: 22.5 (#122)
| Benchmark | Gemini 2.5 Pro | Grok Build 0.1 |
|---|---|---|
| Terminal-Bench | 32.6% | — |
| GDPval | 23.3% | — |
| Remote Labor Index | 0.8% | — |
| TheAgentCompany | 30.3% | — |
| τ²-bench Banking | 13.7% | — |
| DeepResearch Bench | 42.8% | — |
| BALROG | 43.3% | — |
| GBAEval | — | 2.4% |
| LMArena Search | 1142 | — |
| METR Time Horizons | 55.4% | — |
| Vending-Bench 2 | 573.64 | — |
Reasoning Grok Build 0.1 leads
Gemini 2.5 Pro: 28.8 (#85), Grok Build 0.1: 31.3 (#73)
| Benchmark | Gemini 2.5 Pro | Grok Build 0.1 |
|---|---|---|
| CritPt | 2% | 9.1% |
| ARC-AGI-2 | 4.9% | — |
| SimpleBench | 62.4% | — |
| Kagi LLM Benchmark | 70.3% | — |
| ARC-AGI-1 | 41% | — |
| Chess Puzzles | 20% | — |
| EnigmaEval | 5.6% | — |
| LiveBench Reasoning | 89.8% | — |
| LMArena Hard Prompts | 1455 | — |
| DTBench | 82.4% | — |
| LiveBench Data Analysis | 79.9% | — |
| LMCA | 34.8% | — |
| Epoch Capabilities Index | 145.32 | — |
| ForecastBench | 61.3 | — |
| LiveBench | 82.3% | — |
Math Not comparable
Gemini 2.5 Pro: 31.9 (#191), Grok Build 0.1: —
| Benchmark | Gemini 2.5 Pro | Grok Build 0.1 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 24.6% | — |
| FrontierMath Tier 4 | 0% | — |
| OTIS Mock AIME 2024-2025 | 84.7% | — |
| Omni-MATH | 41.6% | — |
| LiveBench Math | 90.2% | — |
| LMArena Math | 1450 | — |
| MATH Level 5 | 95.9% | — |
| FrontierMath (Feb 2025 set) | 14.1% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge Not comparable
Gemini 2.5 Pro: 55.8 (#41), Grok Build 0.1: —
| Benchmark | Gemini 2.5 Pro | Grok Build 0.1 |
|---|---|---|
| GPQA Diamond | 85.3% | — |
| Humanity's Last Exam | 21.6% | — |
| MMLU-Pro | 86.3% | — |
| Confabulations | 10.6% | — |
| Vectara Hallucination Rate | 7% | — |
| GPQA (HELM) | 74.9% | — |
| LMArena Expert | 1452 | — |
Multimodal Not comparable
Gemini 2.5 Pro: 44.5 (#16), Grok Build 0.1: —
| Benchmark | Gemini 2.5 Pro | Grok Build 0.1 |
|---|---|---|
| LMArena Vision | 1263 | — |
| GeoBench | 86% | — |
| VPCT | 48% | — |
| LMArena Document | 1421 | — |
| SpatialViz-Bench | 44.7% | — |
Multilingual Not comparable
Gemini 2.5 Pro: 55.5 (#30), Grok Build 0.1: —
| Benchmark | Gemini 2.5 Pro | Grok Build 0.1 |
|---|---|---|
| LMArena Non-English | 1452 | — |
| LMArena Chinese | 1507 | — |
| LMArena French | 1473 | — |
| LMArena German | 1487 | — |
| LMArena Japanese | 1462 | — |
| LMArena Korean | 1435 | — |
| LMArena Russian | 1460 | — |
| LMArena Spanish | 1473 | — |
Instruction Following Not comparable
Gemini 2.5 Pro: 75.2 (#71), Grok Build 0.1: —
| Benchmark | Gemini 2.5 Pro | Grok Build 0.1 |
|---|---|---|
| LiveBench Instruction Following | 80.6% | — |
| IFEval | 84% | — |
| LMArena Instruction Following | 1436 | — |
Long Context Not comparable
Gemini 2.5 Pro: 59.7 (#5), Grok Build 0.1: —
| Benchmark | Gemini 2.5 Pro | Grok Build 0.1 |
|---|---|---|
| Fiction.LiveBench | 91.7% | — |
| LMArena Longer Query | 1449 | — |
Writing & Preference Not comparable
Gemini 2.5 Pro: 63.9 (#60), Grok Build 0.1: —
| Benchmark | Gemini 2.5 Pro | Grok Build 0.1 |
|---|---|---|
| LMArena Text | 1458 | — |
| LMArena Creative Writing | 1453 | — |
| Short-Story Creative Writing | 83.8% | — |
| EQ-Bench Creative Writing | 1421 | — |
| WildBench | 85.7% | — |
| LMArena Multi-Turn | 1453 | — |
| LiveBench Language | 67.8% | — |
Frequently asked questions
Is Gemini 2.5 Pro better than Grok Build 0.1?
Gemini 2.5 Pro is the stronger model overall, scoring 44.9 to 35.8 on the Noometry Index. Grok Build 0.1 costs 2.8× less per token, which makes it the better buy when Gemini 2.5 Pro's lead doesn't matter for your workload.
Which is cheaper, Gemini 2.5 Pro or Grok Build 0.1?
Grok Build 0.1 is cheaper. It lists at $1 per million input tokens and $2 per million output tokens; Gemini 2.5 Pro lists at $1.25 and $10.
Is Gemini 2.5 Pro or Grok Build 0.1 better for coding?
They score almost the same on coding (42.8 vs 42.5); test both on your own repository before choosing.
Which has the bigger context window?
Gemini 2.5 Pro does, with 1.05M tokens against 256K.
How many benchmarks do Gemini 2.5 Pro and Grok Build 0.1 share?
2 benchmarks have published results for both models. Gemini 2.5 Pro has 78 scored results on Noometry and Grok Build 0.1 has 3.