Grok 4.3 Beta
ModelActiveby xAI · family “grok-beta”
Epoch Capabilities Index
149.1 #55 of 268
90% CI 147.5 – 150.6
Released
17 Apr 2026
Context window
Unknown
Max output
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Input $ / 1M tokens
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Output $ / 1M tokens
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Cached input $ / 1M
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Each benchmark shown separately with its own source
Benchmark results (10)
| Benchmark | Domain | Score | vs best recorded | Setting | Run | Source |
|---|---|---|---|---|---|---|
| LMCA | agents | 38.3% | 59% | high | — | External ↗ |
| DTBench | reasoning | 90.7% | 92% | high | — | External ↗ |
| FrontierMath-Tiers-1-3-v2-Private | math | 42.8% ±2.9 | 46% | high | 17 Jun 2026 | Eval log ↗ |
| FrontierMath-Tier-4-v2-Private | math | 14.6% ±5.6 | 15% | high | 17 Jun 2026 | Eval log ↗ |
| ProofBench | math | 11.0% | 11% | high | — | External ↗ |
| Chess Puzzles | games | 25.0% ±4.4 | 35% | high | 17 Jun 2026 | Epoch ↗ |
| SimpleQA Verified | knowledge | 33.2% ±1.5 | 44% | high | 27 Aug 2026 | Eval log ↗ |
| WeirdML | coding | 49.9% ±0.0 | 53% | unknown | — | External ↗ |
| OTIS Mock AIME 2024-2025 | math | 93.3% ±3.0 | 93% | high | 17 Jun 2026 | Epoch ↗ |
| GPQA diamond | science | 88.8% ±2.0 | 93% | high | 17 Jun 2026 | Epoch ↗ |
Source: Epoch AI Benchmarking Hub (CC BY 4.0). “External” rows are leaderboard results Epoch collects from third parties. Best reported setting per benchmark is shown.
API list price over time
Price history
$ per 1M tokens
No data recorded for this period
0 observations (OpenRouter listing). History accumulates with every ingest run; a single point means no change has been observed yet.
Events
- Benchmark33d agoEpoch AI evaluates Grok 4.3 BetaEpoch AI Benchmarking Hub
- Model launch6mo agoxAI releases Grok 4.3 BetaEpoch AI Benchmarking Hub