Model profile
Grok 4.20
Grok 4.20 by xAI scores 54.68/100 on the public leaderboard (#88 of 200), with an Arena Elo of 1474 and a 2M-token context window. API pricing is $2/$6 per million input/output tokens. Newer replacements: Grok 4.3 and Grok 4.5.
Evidence coverage
18 of 323 tracked benchmarks are published. 2 are verified and 16 provisional. 5 of 8 categories are measured.
- Published / tracked
- 18 / 323
- Verified
- 2
- Provisional
- 16
- Categories with evidence
- 5 / 8
Evidence by category
- Agentic3 benchmarksMixed evidence
- Coding4 benchmarksMixed evidence
- Reasoning1 benchmarkReported
- Knowledge4 benchmarksReported
- Math0 benchmarksNot measured
- Multilingual0 benchmarksNot measured
- Multimodal6 benchmarksReported
- Inst. Following0 benchmarksNot measured
Grok 4.20 ranks #88 out of 200 models on the public leaderboard with an overall score of 54.68/100. It does not yet have enough sourced coverage for BenchLM's verified leaderboard. While not a frontier model, it offers specific advantages depending on the use case.
Grok 4.20 is a proprietary model with a 2M token context window. It uses explicit chain-of-thought reasoning, which typically improves performance on math and complex reasoning tasks at the cost of higher latency and token usage.
Grok 4.20 sits inside the Grok 4.20 family alongside Grok 4.20 Multi-agent. BenchLM links it directly to Grok 4.1 as the earlier related model in that lineage. This profile currently has 18 of 323 tracked benchmarks. BenchLM only exposes non-generated benchmark rows publicly, so missing categories stay blank until a sourced evaluation is available.
Its strongest category is Multimodal & Grounded (#25), while its weakest is Coding (#83). This performance profile makes it particularly strong for screenshots, documents, charts, and grounded multimodal workflows.
Peer position
Exact provisional scores and ranks for the closest listed peers. A score can appear before a model clears the evidence threshold for a rank, so equal scores can have different rank states.
Range 54.48–55.15
- GPT-5 (medium)OpenAICompare#8455.15GPT-5 (medium) is #84 with a score of 55.15.
- GLM-4.6Z.AICompare#8555.12GLM-4.6 is #85 with a score of 55.12.
- Step 3.5 FlashStepFunCompare#8655.1Step 3.5 Flash is #86 with a score of 55.1.
- Kimi K2.7 CodeMoonshot AICompare#8755.0Kimi K2.7 Code is #87 with a score of 55.0.
- Grok 4.20Current modelxAI#8854.68Grok 4.20 is #88 with a score of 54.68.
- DeepSeek LLM 2.0DeepSeekCompare#8954.53DeepSeek LLM 2.0 is #89 with a score of 54.53.
- GPT-5.1-Codex-MaxOpenAICompare#9054.48GPT-5.1-Codex-Max is #90 with a score of 54.48.
Category percentile
More
Relative position among models eligible for each sourced category. A higher percentile means a stronger position within that category's ranked cohort; 100 is highest.
- Multimodal14%Eligible cohort rank #25 of 29Category score 34.9
- Agentic59%Eligible cohort rank #49 of 119Category score 49.6
- Coding32%Eligible cohort rank #83 of 122Category score 47.0
Category evidence
Scores and ranks appear only where this model has published benchmark evidence. Categories without displayable source records remain not measured.
| Category | Score | Rank | Percentile | Weight | Benchmarks | Evidence |
|---|---|---|---|---|---|---|
| AgenticRank #49 of 119Percentile 59thWeight 22%3 benchmarksMixed sources | 49.6 | #49 of 119 | 59th | 22% | 3 benchmarks | Mixed sources |
| CodingRank #83 of 122Percentile 32ndWeight 20%4 benchmarksMixed sources | 47.0 | #83 of 122 | 32nd | 20% | 4 benchmarks | Mixed sources |
| ReasoningRank Not rankedWeight 17%1 benchmarkReported | 65.2 | Not ranked | Not available | 17% | 1 benchmark | Reported |
| KnowledgeWeight 12%4 benchmarksReported | Score pending | Not ranked | Not available | 12% | 4 benchmarks | Reported |
| MathWeight 5%0 benchmarksNot measured | Not measured | Not ranked | Not available | 5% | 0 benchmarks | Not measured |
| MultilingualWeight 7%0 benchmarksNot measured | Not measured | Not ranked | Not available | 7% | 0 benchmarks | Not measured |
| MultimodalRank #25 of 29Percentile 14thWeight 12%6 benchmarksReported | 34.9 | #25 of 29 | 14th | 12% | 6 benchmarks | Reported |
| Inst. FollowingWeight 5%0 benchmarksNot measured | Not measured | Not ranked | Not available | 5% | 0 benchmarks | Not measured |
Chatbot Arena performance
Scroll horizontally to inspect confidence intervals and vote counts.
| View | Elo | Confidence interval | Votes |
|---|---|---|---|
| Text Overall | 1474 | ±4.7 | 26,827 |
| Coding | 1508 | ±7.7 | 7,213 |
| Math | 1452 | ±14.8 | 1,601 |
| Instruction Following | 1449 | ±7.2 | 8,360 |
| Creative Writing | 1460 | ±10.0 | 3,970 |
| Multi-turn | 1482 | ±9.6 | 4,384 |
| Hard Prompts | 1486 | ±5.6 | 16,642 |
| Hard Prompts (English) | 1487 | ±7.2 | 8,378 |
| Longer Query | 1463 | ±7.0 | 9,785 |
Benchmark Details
Rows below have a displayable published verification record. Each source link and provenance note remains in the page HTML while its category is closed. Source-unverified manual rows and generated rows stay hidden.
Agentic3 benchmarks
Gert Labs Composite Game Benchmark
Coding4 benchmarks
Software Engineering Benchmark Verified
Vibe Code Bench v1.1
Reasoning1 benchmark
Abstraction and Reasoning Corpus for AGI v2
Knowledge4 benchmarks
GPQA Diamond
Humanity's Last Exam without tools
MedXpertQA Text
Multimodal6 benchmarks
Massive Multi-discipline Multimodal Understanding Pro
CharXiv Reasoning
MedXpertQA Multimodal
Design Arena Website Elo
Frequently Asked Questions
How does Grok 4.20 perform overall in AI benchmarks?
Grok 4.20 has 18 published benchmark scores on BenchLM, but it does not yet have enough non-generated coverage to receive a global overall rank.
Is Grok 4.20 good for knowledge and understanding?
Grok 4.20 has visible benchmark coverage in knowledge and understanding, but BenchLM does not currently assign it a global category rank there.
Is Grok 4.20 good for coding and programming?
Grok 4.20 ranks #83 out of 122 models in coding and programming benchmarks with an average score of 47. There are stronger options in this category.
Is Grok 4.20 good for reasoning and logic?
Grok 4.20 has visible benchmark coverage in reasoning and logic, but BenchLM does not currently assign it a global category rank there.
Is Grok 4.20 good for agentic tool use and computer tasks?
Grok 4.20 ranks #49 out of 119 models in agentic tool use and computer tasks benchmarks with an average score of 49.6. There are stronger options in this category.
Is Grok 4.20 good for multimodal and grounded tasks?
Grok 4.20 ranks #25 out of 29 models in multimodal and grounded tasks benchmarks with an average score of 34.9. There are stronger options in this category.
Which sibling models are related to Grok 4.20?
Grok 4.20 belongs to the Grok 4.20 family. Related variants on BenchLM include Grok 4.20 Multi-agent.
Does Grok 4.20 have full benchmark coverage on BenchLM?
Not yet. Grok 4.20 currently has 18 published benchmark scores out of the 323 benchmarks BenchLM tracks. BenchLM only exposes non-generated public benchmark rows, so missing categories stay blank until a sourced evaluation is available.
What is the context window size of Grok 4.20?
Grok 4.20 has a published context window of 2M, which determines how much text it can process in a single interaction.
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