xAI·released 2026-02-171 source
Grok 4.20 benchmark scores: 15 benchmarks tracked. 27% of its scores are independently reproduced — the rest are self-reported or unverified.
Leads on 0 of 15 benchmarks·best result 92.21 on OTIS Mock AIME 2024-2025 (reproduced)·4 of 15 independently reproduced
| Benchmark | Score | Evidence status | Measured |
|---|---|---|---|
| OTIS Mock AIME 2024-2025 | 92.21accuracy (%) | reproduced· optimizedT1 | 2026-02-17Epoch AI |
| ARC-AGI | 89.5accuracy (%) | unverified· optimizedT1 | 2026-02-17https://arcprize.org/leaderboard |
| GPQA diamond | 85.77accuracy (%) | reproduced· optimizedT1 | 2026-02-17Epoch AI |
| DTBench | 83.55accuracy (%) | unverifiedT1 | 2026-02-17https://conceptualreasoning.ai/dtbench |
| ARC-AGI-2 | 65.14accuracy (%) | unverifiedT2 | 2026-02-17 |
| Terminal Bench | 57.3accuracy (%) | unverifiedT1 | 2026-02-17https://www.tbench.ai/leaderboard/terminal-bench/2.0 |
| WeirdML | 52.26accuracy (%) | unverifiedT1 | 2026-02-17https://htihle.github.io/weirdml.html |
| LMCA | 45.48accuracy (%) | unverifiedT1 | 2026-02-17https://conceptualreasoning.ai/lmca |
| FrontierMath-Tiers-1-3-v2-Private | 44.91accuracy (%) | reproducedT1 | 2026-02-17Epoch AI |
| SimpleQA Verified | 30.2accuracy (%) | unverifiedT2 | 2026-02-17 |
| Chess Puzzles | 25.29accuracy (%) | unverifiedT2 | 2026-02-17 |
| CL-bench | 22.2accuracy (%) | unverifiedT2 | 2026-02-17 |
| FrontierMath-Tier-4-v2-Private | 17.07accuracy (%) | reproducedT1 | 2026-02-17Epoch AI |
| ProofBench | 14accuracy (%) | unverifiedT1 | 2026-02-17https://www.vals.ai/benchmarks/proof_bench |
| CL-bench Life | 11.9accuracy (%) | unverifiedT2 | 2026-02-17 |
Claims drawn from cited facts, not live model generation.
This model was developed by xAI. It was released in 2026.
2 cited facts
This model is scored on 15 tracked benchmarks, but it currently holds no top score on any of them. The record’s evidence status is independently reproduced.
3 cited facts
Its mean gap to the best recorded score across its tracked benchmarks is 33.41 points. It currently holds the top score on none of them.
2 cited facts
5 facts cross-checked across data sources: 5 single-source.
Source facts, citations, and refresh stamp for this record.
Sources: epoch_benchmarks, openrouter_models
Grok 4.20 is an AI model developed by xAI, released 2026-02-17. Its benchmark record below tags every score as independently reproduced, self-reported, or unverified.
Grok 4.20 has recorded scores on 15 benchmarks, each shown with its evidence status.
Grok 4.20 has recorded scores on 15 benchmarks — GPQA diamond, OTIS Mock AIME 2024-2025, DTBench, WeirdML, LMCA, SimpleQA Verified, and 9 more. The full table above shows each score with its evidence status.
4 of 15 recorded scores (27%) are independently reproduced rather than self-reported by the lab.
Grok 4.20 has 15 tracked claims: 4 independently reproduced, 11 unverified.