Grok 4.3 Beta vs Grok 4.5
Grok 4.3 Beta (xAI) 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 149).
- Grok 4.5 ranks higher for coding (91th vs 32th percentile).
| Attribute | Grok 4.3 Beta | Grok 4.5 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 149 | 154 |
| Coding | 32 | 91 |
| Math | 69 | 85 |
| Reasoning & Knowledge | 51 | 70 |
| Agentic & Tools | — | 75 |
| Specifications | ||
| Developer | xAI | xAI |
| Family | Grok | Grok |
| Released | Apr 17, 2026 | Jul 8, 2026 |
| Parameters | — | — |
| Availability | Hosted access (no API) | 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% |
| GPQA Diamond | 89% | 93% |
| SimpleQA Verified | 38% | 54% |
| WebDev Arena | 1377 | 1551 |
| WeirdML | 50% | 46% |
| APEX | — | 34% |
| ARC-AGI | — | 87% |
| ARC-AGI-2 | — | 53% |
| Humanity's Last Exam | — | 40% |
| SciCode | — | 54% |
| SimpleBench | — | 70% |
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 Grok 4.3 Beta better than Grok 4.5?
On Epoch AI's Capabilities Index, Grok 4.5 scores higher (154) than Grok 4.3 Beta (149). The right pick depends on your task — compare their coding, math, and reasoning scores in the table above.
Which is better for coding, Grok 4.3 Beta or Grok 4.5?
Across coding benchmarks like SWE-bench Verified and Terminal-Bench, Grok 4.5 ranks higher — 91th vs 32th 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.