Model comparison
Gemini 2.5 Pro vs Grok 3 [Beta]
Head-to-head evidence from 2 shared benchmark results across 1 category. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Gemini 2.5 Pro #70 (Supported); Grok 3 [Beta] #171 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Gemini 2.5 Pro and Grok 3 [Beta] share 2 comparable benchmark results. 1 of 8 categories are comparable. 22 results are unique to Gemini 2.5 Pro; 0 to Grok 3 [Beta].
Updated July 22, 2026- Shared results
- 2
- Gemini 2.5 Pro only
- 22
- Grok 3 [Beta] only
- 0
- Comparable categories
- 1 / 8
Pick Gemini 2.5 Pro if you want the stronger benchmark profile. Grok 3 [Beta] only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.
Confidence note. This is a partial-evidence comparison with 2 shared benchmark results across 1 evidence category; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
Gemini 2.5 Pro is clearly ahead on the BenchAlign aggregate, 57.25 to 40.43. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Gemini 2.5 Pro's sharpest advantage is in mathematics, where it averages 11.6 against 2.8. The single biggest benchmark swing on the page is FrontierMath v2 (Tiers 1-3), 14.138% to 3.793%.
Gemini 2.5 Pro gives you the larger context window at 1M, compared with 128K for Grok 3 [Beta].
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | Gemini 2.5 Pro | Δ | Grok 3 [Beta] |
|---|---|---|---|
| Math | Gemini 2.5 Pro11.6 | Margin← 8.8 | Grok 3 [Beta]2.8 |
| Coding | Gemini 2.5 Pro63.8 | MarginNo overlap | Grok 3 [Beta]Not measured |
| Knowledge | Gemini 2.5 Pro27.4 | MarginNo overlap | Grok 3 [Beta]Not measured |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
FrontierMath v2 (Tiers 1-3)
MathA 14.138%B 3.793%Winner: Gemini 2.5 ProΔ 10.3FrontierMath v2 (Tiers 1-3): Gemini 2.5 Pro scored 14.138%; Grok 3 [Beta] scored 3.793%. Gemini 2.5 Pro wins this benchmark. - Source ↗
FrontierMath v2 (Tier 4)
MathA 4.167%B 0.000%Winner: Gemini 2.5 ProΔ 4.2FrontierMath v2 (Tier 4): Gemini 2.5 Pro scored 4.167%; Grok 3 [Beta] scored 0.000%. Gemini 2.5 Pro wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Gemini 2.5 Pro | Grok 3 [Beta] | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Gemini 2.5 Pro$1.25 input / $10 output | Grok 3 [Beta]Not available | A complete price comparison is not available. |
| Generation speedtokens per second | Gemini 2.5 Pro117 tok/s | Grok 3 [Beta]Not available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Gemini 2.5 Pro21.19 s | Grok 3 [Beta]Not available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Gemini 2.5 Pro1M | Grok 3 [Beta]128K | Gemini 2.5 Pro lists the larger context window. |
Benchmark Deep Dive
Agentic5 benchmarks
Coding4 benchmarks
Reasoning2 benchmarks
Knowledge8 benchmarks
| Benchmark | Gemini 2.5 Pro | Grok 3 [Beta] | Result |
|---|---|---|---|
| GPQASource | 83% | — | Not comparable |
| HLESource | 18.8% | — | Not comparable |
| Artificial Analysis Intelligence IndexSource | 25.8% | — | Not comparable |
| AA-GPQA DiamondSource | 84.4% | — | Not comparable |
| AA-HLESource | 21.1% | — | Not comparable |
| AA-Omniscience IndexSource | -14.3% | — | Not comparable |
| AA-Omniscience AccuracySource | 39.0% | — | Not comparable |
| AA-Omniscience Hallucination RateSource | 87.4% | — | Not comparable |
MathGemini 2.5 Pro wins2 benchmarks
Multimodal2 benchmarks
Inst. Following1 benchmarks
| Benchmark | Gemini 2.5 Pro | Grok 3 [Beta] | Result |
|---|---|---|---|
| AA-IFBenchSource | 48.7% | — | Not comparable |
Frequently Asked Questions (2)
Which is better, Gemini 2.5 Pro or Grok 3 [Beta]?
Gemini 2.5 Pro is ahead on BenchLM's BenchAlign leaderboard, 57.25 to 40.43. The biggest single separator in this matchup is FrontierMath v2 (Tiers 1-3), where the scores are 14.138% and 3.793%.
Which is better for math, Gemini 2.5 Pro or Grok 3 [Beta]?
Gemini 2.5 Pro has the edge for math in this comparison, averaging 11.6 versus 2.8. Inside this category, FrontierMath v2 (Tiers 1-3) is the benchmark that creates the most daylight between them.
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