Grok 4.20 (Reasoning)

xAI
Grok 4.20 (Reasoning) cover image
Context
1Mtokens
Released
8mo ago

Benchmarks

DeepSWE is the primary coding benchmark where an exact model evaluation exists. Arena leaderboards and other sourced evaluations appear below; missing scores are not zero.

How it ranks

Against its predecessor, similarly priced models and the models ranked around it.

DeepSWE 1.1

Best pass@1 per model · Higher is better

Not evaluated in DeepSWE 1.1

Arena Text

Best Arena rating per model · Higher is better

Not ranked on Arena Text yet

Arena WebDev

Best Arena rating per model · Higher is better

Not ranked on Arena WebDev yet

Arena Vision

Best Arena rating per model · Higher is better

Not ranked on Arena Vision yet

Arena Search

Best Arena rating per model · Higher is better

Not ranked on Arena Search yet

Arena Document

Best Arena rating per model · Higher is better

Not ranked on Arena Document yet

Agent Arena

Best IPS score per model · Higher is better

Not ranked on Agent Arena yet

FrontierMath-Tier-4-v2-Private

Best score per model · Higher is better

#51 of 72

  1. 58.5%
    GPT-5.4 ProSimilar release date
  2. 26.8%
    Claude Opus 4.6Similar release date
  3. 26.8%
    Gemini 3.1 Pro PreviewSimilar release date
  4. 25.6%
    Kimi K2.6Similar release date
  5. 17.1%
    Inkling SmallNearby rank
  6. 17.1%
    Grok 4.7Nearby rank
  7. 17.1%
    Grok 4.20 (Reasoning)
  8. 17.1%
    GLM 5.3 FlashNearby rank
  9. 14.6%
    Grok 4.3Nearby rank

Ahead of 0 of 4 models released around the same time

FrontierMath-Tiers-1-3-v2-Private

Best score per model · Higher is better

#58 of 87

  1. 82.5%
    GPT-5.4 ProSimilar release date
  2. 59.6%
    Gemini 3.1 Pro PreviewSimilar release date
  3. 45.3%
  4. 44.9%
    GPT-5.4 NanoNearby rank
  5. 44.9%
    Grok 4.20 (Reasoning)
  6. 42.8%
    Grok 4.3Nearby rank
  7. 38.2%
    Qwen3.6 PlusNearby rank
  8. 36.8%
    GLM 5.1Similar release date
  9. 18.2%
    Qwen3.5-FlashSimilar release date

Ahead of 2 of 4 models released around the same time

GPQA diamond

Best score per model · Higher is better

#49 of 161

  1. 94.6%
    GPT-5.4 ProSimilar release date
  2. 94.4%
    Gemini 3.1 Pro PreviewSimilar release date
  3. 89.6%
    Claude Haiku 5.5Nearby rank
  4. 89.4%
  5. 89.3%
    Grok 4.20 (Reasoning)
  6. 88.8%
    Grok 4.3Nearby rank
  7. 88.5%
    Inkling SmallNearby rank
  8. 87.4%
    Claude Sonnet 4.6Similar release date
  9. 82.3%
    Qwen3.5-FlashSimilar release date

Ahead of 2 of 4 models released around the same time

OTIS Mock AIME 2024-2025

Best score per model · Higher is better

#51 of 158

  1. 97.8%
    GPT-5.4Similar release date
  2. 95.6%
    Gemini 3.1 Pro PreviewSimilar release date
  3. 93.3%
    Grok 4.3Nearby rank
  4. 93.3%
    GLM 5.1Nearby rank
  5. 92.2%
    Grok 4.20 (Reasoning)
  6. 91.4%
  7. 91.4%
    GPT-5Nearby rank
  8. 84.4%
    Qwen3.5-FlashSimilar release date
  9. 55.8%
    Qwen3.5 4BSimilar release date

Ahead of 2 of 4 models released around the same time

SimpleQA Verified

Best score per model · Higher is better

#68 of 87

  1. 73.5%
    Gemini 3.1 Pro PreviewSimilar release date
  2. 46.3%
    GPT-5.4 ProSimilar release date
  3. 35.5%
    Claude Sonnet 4.6Similar release date
  4. 31.1%
    GPT-4.1Nearby rank
  5. 30.7%
  6. 30.2%
    Grok 4.20 (Reasoning)
  7. 29.4%
    GPT-5.4 MiniNearby rank
  8. 26.0%
  9. 20.3%
    Qwen3.5-FlashSimilar release date

Ahead of 1 of 4 models released around the same time

Not evaluated in DeepSWE 1.1 as of 2026-09-22. Results are only shown for exact model versions in the official dataset. Official leaderboard.

All published scores

Benchmark compilation: Epoch AI, Capabilities & benchmarking (CC BY attribution). Scores are converted to percentages and model names matched to the Vertical Tabs catalog. Individual evaluations are credited to their original sources. External results may carry separate licences and evaluation configurations; do not interpret scores from different harnesses as directly comparable.

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