Model record

Grok 4.20

reasoning

xAI · released Mar 10, 2026

Overall standing

Overall
50.3rank 28 of 63
50.3 is at approximately the 56th percentile of the ranked Overall field. The field spans 19.0 to 62.2, with a median of 49.4.
6 of 8 measured · 2 estimated
Category standingsReasoning 65.6Coding 56.2Math 6.6Agentic 21.3
Reasoning
65.6rank 27 of 63
65.6 is at approximately the 58th percentile of the ranked Reasoning field. The field spans 31.6 to 73.3, with a median of 65.0.
4 of 4 measured
Coding
56.2rank 30 of 63
56.2 is at approximately the 53th percentile of the ranked Coding field. The field spans 10.4 to 72.4, with a median of 54.5.
1 of 2 measured · 1 estimated
Math
6.6rank 31 of 63
6.6 is at approximately the 52th percentile of the ranked Math field. The field spans 0.0 to 32.3, with a median of 5.7.
1 of 1 measured
Agentic
21.3rank 26 of 63
21.3 is at approximately the 60th percentile of the ranked Agentic field. The field spans 3.3 to 33.4, with a median of 19.0.
0 of 1 measured · 1 estimated
Model factsProprietary · $1.3 / $2.5 per 1M

Model facts come from the provider page. Listed API prices carry a separate first-party source and check date.

Provider
xAI
Released
Weights
Proprietary
Context window
1,000,000 tokens
Input price / Mtok
$1.3
Output price / Mtok
$2.5
Price source
Official pricing (opens in a new tab)
Reasoning effort
reasoning

Scores and sources

Measured scores retain their source and retrieval date. Missing scores are not treated as zero.

Benchmark scores, evaluation settings, sources, and retrieval dates for Grok 4.20
BenchmarkCategoryScoreEvaluation settingsSource
Terminal-Bench v2.1Coding—Not measured in this datasetNo source
τ³-BankingAgentic—Not measured in this datasetNo source
AA-LCRReasoning58.0Artificial Analysis independent run; 100 roughly 100k-token multi-document questions; 3 repeats; equality-checker pass@1; no toolsOpen source (opens in a new tab)
Humanity's Last ExamReasoning32.2Artificial Analysis independent run; 2,158 text-only questions; pass@1; GPT-4o (August 2024) equality checker; no toolsOpen source (opens in a new tab)
GPQA DiamondReasoning91.1Artificial Analysis independent run; 198 questions; 5 repeats; regex-graded pass@1; no toolsOpen source (opens in a new tab)
SciCodeCoding45.6Artificial Analysis independent run; 288 test subproblems; scientist background included; 3 repeats; subproblem pass@1Open source (opens in a new tab)
IFBenchReasoning81.2Artificial Analysis independent run; 294 single-turn prompts; 5 repeats; official loose evaluator; prompt-level pass@1Open source (opens in a new tab)
CritPtMath6.6Artificial Analysis independent run; 70 test challenges; 5 repeats; two-step answer parsing; official CritPt grader; pass@1; no toolsOpen source (opens in a new tab)