Gemini 3 Flash vs Grok 4.5
Gemini 3 Flash (Google DeepMind) and Grok 4.5 (xAI) compared on benchmarks, pricing, context window, and use-case rankings.
- Grok 4.5 leads on overall intelligence (ECI 154 vs 151).
- Grok 4.5 ranks higher for coding (91th vs 52th percentile).
| Attribute | Gemini 3 Flash | Grok 4.5 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 151 | 154 |
| Coding | 52 | 91 |
| Math | 55 | 85 |
| Reasoning & Knowledge | 51 | 70 |
| Agentic & Tools | 65 | 75 |
| Specifications | ||
| Developer | Google DeepMind | xAI |
| Family | Gemini | Grok |
| Released | Dec 17, 2025 | Jul 8, 2026 |
| Parameters | — | — |
| Availability | API access | API access |
| Context window | — | 500K |
| Price — $/M input | — | $2.00 |
| Price — $/M output | — | $6.00 |
| Inputs | — | text, image, file |
| Outputs | — | text |
| Benchmarks | ||
| AIME 2024/2025 | 93% | 98% |
| APEX | 24% | 34% |
| ARC-AGI | 22% | 87% |
| ARC-AGI-2 | 34% | 53% |
| FrontierMath | 36% | — |
| FrontierMath Tier 4 | 4% | — |
| GPQA Diamond | 83% | 93% |
| GSO (code optimization) | 10% | — |
| SimpleBench | 61% | 70% |
| SimpleQA Verified | 67% | 54% |
| SWE-bench Verified | 75% | — |
| Terminal-Bench | 64% | — |
| WebDev Arena | 1454 | 1551 |
| WeirdML | 62% | 46% |
| Humanity's Last Exam | — | 40% |
| SciCode | — | 54% |
Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.
Frequently asked questions
Is Gemini 3 Flash better than Grok 4.5?
On Epoch AI's Capabilities Index, Grok 4.5 scores higher (154) than Gemini 3 Flash (151). The right pick depends on your task — compare their coding, math, and reasoning scores in the table above.
Which is better for coding, Gemini 3 Flash or Grok 4.5?
Across coding benchmarks like SWE-bench Verified and Terminal-Bench, Grok 4.5 ranks higher — 91th vs 52th percentile among the models tracked on Model Beat.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.