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Grok 4.20 0309 (Reasoning)

Grok 4.20 · Released 2026-03-10

Listed on Artificial Analysis with API pricing $2/$6 per 1M tokens. Benchmark rows sync from the AA snapshot — see the ledger on this page.

Frontier model tracked on Artificial Analysis. Use the benchmark ledger below for sourced scores; we do not infer numbers beyond published rows.

Composite57
Context128K
Input / 1M$2.0
Output / 1M$6.0
Knowledge cutoffopen
Statussolid

Family profile

Best published score in each covered benchmark family.

66/100 avg
Reasoning
89
Agentic
41
Long context
68

3 tested benchmark families

Benchmark placements

Where Grok 4.20 0309 (Reasoning) places on each public benchmark source that publishes a row. Rank counts every model with a latest row in the same test — not a universal quality score.

BenchmarkFamilyRankScoreSourceDate
GPQA DiamondReasoning#62/ 18489Artificial Analysis2026-09-28
Humanity's Last ExamReasoning#74/ 18632Artificial Analysis2026-09-28
Terminal-BenchAgentic#97/ 16741Artificial Analysis2026-09-28
AA-LCRLong context#135/ 18468Artificial Analysis2026-09-28
AA output speedPerformance#136/ 191Artificial Analysis2026-09-28
Family context

The three highest-scoring models with pages in each capability family. Where Grok 4.20 0309 (Reasoning) shows up, it's highlighted.

ReasoningGrok 4.20 0309 (Reasoning) · 89
  1. 1
    GPT-6 Astra
    96
  2. 2
    Claude Mythos Preview
    95
  3. 3
    Gemini 3.7 Flash
    95
Long contextGrok 4.20 0309 (Reasoning) · 68
  1. 1
    Kimi K3
    89
  2. 2
    MiMo-V2.6-Pro
    86
  3. 3
    Claude Fable 5.1
    85
Newest receipts

Benchmark rows added to the public ledger for Grok 4.20 0309 (Reasoning) in the last 120 days. Older rows live in the full table below.

5 recent
BenchmarkFamilyScoreSourceDays ago
AA-LCRLong context67.67%Artificial Analysis13
AA output speedPerformance0 t/sArtificial Analysis13
GPQA DiamondReasoning88.5%Artificial Analysis13
Humanity's Last ExamReasoning32.4%Artificial Analysis13
Terminal-BenchAgentic40.91%Artificial Analysis13
Family coverage

A high composite that hides a weak family is a trap. These bars surface the families where this model hasn't been publicly tested, and where it leads.

Reasoning89
Agentic41
Long context68
Price vs. performance
0255075100$0.10$0.30$1$3$10$30input USD / 1M tokens · log scale →← intelligence

Hover any dot for name, score, and input price. Keyboard: tab through the top twelve, or use the ranking below.

AnthropicOpenAIGoogleAlibabaMetaZhipuxAIDeepSeekMiniMaxXiaomiMoonshotOtherMeituanMistralNVIDIACohere

Full benchmark ledger

Every catalog benchmark for Grok 4.20 0309 (Reasoning). Scores link to the original source; gaps mean no public row exists yet.

5 sourced rows

5 of 13 catalog benchmarks have a sourced row for Grok 4.20 0309 (Reasoning).

Reasoning

Agentic

Long context

Performance

Sources

Questions this model page answers

Every answer below is assembled from the dated fields on this page. Nothing is written separately for search.

What is Grok 4.20 0309 (Reasoning)?

Grok 4.20 0309 (Reasoning) is a xAI model: Listed on Artificial Analysis with API pricing $2/$6 per 1M tokens. Benchmark rows sync from the AA snapshot — see the ledger on this page.

What is Grok 4.20 0309 (Reasoning) for?

Frontier model tracked on Artificial Analysis. Use the benchmark ledger below for sourced scores; we do not infer numbers beyond published rows.

What does Grok 4.20 0309 (Reasoning) cost?

Grok 4.20 0309 (Reasoning) lists $2.0 input and $6.0 output per 1M tokens. Pricing last checked 2026-07-26.

How large is the Grok 4.20 0309 (Reasoning) context window?

Grok 4.20 0309 (Reasoning) publishes a 128K token context window.

What is the VerdictPal status of Grok 4.20 0309 (Reasoning)?

Grok 4.20 0309 (Reasoning) carries Solid status on the model atlas.

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