Noometry

xAI, unknown

Grok 4.20 Beta 1

Grok 4.20 Beta 1 by xAI ranks 91st of 368 ranked models on the Noometry Index as of November 2026, with a score of 44.9. Its strongest category is multilingual, where it ranks 54th.

Last verified

Noometry rank
#91 of 368
Index score
44.9
Evidence
Confirmed 17 results
Provider
xAI
Released
Unknown
Weights
Unknown
Reasoning
Unknown
Context window
—
Max output
—
Input price
Not listed
Output price
Not listed
Blended price
Not listed
Output speed
Not measured
Value
Not ranked
Knowledge cutoff
Unknown

Category scores

Each category score combines every public result we have in that category.

  1. Coding 43.4
  2. Reasoning 32.4
  3. Math 41.4
  4. Knowledge 40.8
  5. Multilingual 52.6
  6. Instruction Following 74.4
  7. Long Context 43.5
  8. Writing & Preference 63.8
CategoryScoreRankResults
Coding43.4#1011
Reasoning32.4#921
Math41.4#1121
Knowledge40.8#1371
Multilingual52.6#541
Instruction Following74.4#921
Long Context43.5#941
Writing & Preference63.8#653

Strengths and weaknesses

Categories where Grok 4.20 Beta 1 places highest and lowest among the models ranked in each, with its score against that category's median.

Strongest categories

CategoryScorevs medianRank
Multilingual52.6+5.8#54 of 294, top 19%
Writing & Preference63.8+10.2#65 of 317, top 21%
Reasoning32.4+6.4#92 of 349, top 27%

Weakest categories

CategoryScorevs medianRank
Knowledge40.8+2.6#137 of 326, top 43%
Math41.4+2.8#112 of 342, top 33%
Long Context43.5+2.4#94 of 292, top 33%

Closest competitors

The models ranked just above and below Grok 4.20 Beta 1. When scores are this close, price and speed are often the better way to choose.

ModelRankScoreBlended $/MSpeed
Nvidia Nemotron 3 Ultra 550b A55b (nvfp4)#8745.2——Compare
GPT-5.4 mini#8845.1$1.6910Compare
Gemini 2.5 Pro#8945.1$3.445Compare
Hy3#9045.0$0.23—Compare
Chatgpt 4o Latest 20250326#9244.7—21Compare
GLM-5V-Turbo#9344.7$1.90—Compare
Qwen3 Max#9444.7$2.4048Compare
ERNIE 5.1#9544.6——Compare

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Benchmark results

Every published result we track, with its source. Bold rows are the ones used for ranking; where several exist we prefer independent runs over self-reported numbers.

Coding

BenchmarkScorePositionSettingSourceDate
LMArena Coding1447#92 of 291, top 32%Grok 4.20 Beta 1LMArena2026-10-28

Reasoning

BenchmarkScorePositionSettingSourceDate
LMArena Hard Prompts1441#82 of 294, top 28%Grok 4.20 Beta 1LMArena2026-10-28

Math

BenchmarkScorePositionSettingSourceDate
LMArena Math1432#82 of 283, top 29%Grok 4.20 Beta 1LMArena2026-10-28

Knowledge

BenchmarkScorePositionSettingSourceDate
LMArena Expert1427#101 of 271, top 38%Grok 4.20 Beta 1LMArena2026-10-28

Multilingual

BenchmarkScorePositionSettingSourceDate
LMArena Non-English1433#54 of 294, top 19%Grok 4.20 Beta 1LMArena2026-10-28
LMArena Chinese1476#72 of 281, top 26%Grok 4.20 Beta 1LMArena2026-10-28
LMArena French1455#65 of 229, top 29%Grok 4.20 Beta 1LMArena2026-10-28
LMArena German1464#34 of 236, top 15%Grok 4.20 Beta 1LMArena2026-10-28
LMArena Japanese1449#29 of 218, top 14%Grok 4.20 Beta 1LMArena2026-10-28
LMArena Korean1416#40 of 217, top 19%Grok 4.20 Beta 1LMArena2026-10-28
LMArena Russian1449#47 of 280, top 17%Grok 4.20 Beta 1LMArena2026-10-28
LMArena Spanish1438#74 of 229, top 33%Grok 4.20 Beta 1LMArena2026-10-28

Instruction Following

BenchmarkScorePositionSettingSourceDate
LMArena Instruction Following1415#81 of 294, top 28%Grok 4.20 Beta 1LMArena2026-10-28

Long Context

BenchmarkScorePositionSettingSourceDate
LMArena Longer Query1427#85 of 287, top 30%Grok 4.20 Beta 1LMArena2026-10-28

Writing & Preference

BenchmarkScorePositionSettingSourceDate
LMArena Text1445#57 of 294, top 20%Grok 4.20 Beta 1LMArena2026-10-28
LMArena Creative Writing1438#39 of 292, top 14%Grok 4.20 Beta 1LMArena2026-10-28
LMArena Multi-Turn1451#56 of 292, top 20%Grok 4.20 Beta 1LMArena2026-10-28

Compare Grok 4.20 Beta 1

Other xAI models

Frequently asked questions

How good is Grok 4.20 Beta 1?

Grok 4.20 Beta 1 by xAI ranks 91st of 368 ranked models on the Noometry Index as of November 2026, with a score of 44.9. Its strongest category is multilingual, where it ranks 54th.

Is Grok 4.20 Beta 1 open source?

xAI has not published downloadable weights for Grok 4.20 Beta 1 that we can confirm.

What are Grok 4.20 Beta 1's strengths and weaknesses?

Relative to other ranked models, Grok 4.20 Beta 1 places best in multilingual, writing & preference, reasoning and lowest in knowledge, math, long context.

What is Grok 4.20 Beta 1 best at?

Its best category is multilingual, where it ranks 54th on Noometry.