Grok 4.3

Apr 2026
Grok 4.3
Compare in
on
$0.15per task?
$1.25 / $2.50per 1M in / outcache $0.20
98 tok/sfirst token in 0.7 s?
1Mcontext

Rankingin non-thinking mode?

Full ranking →
1MiniMax M382.92Nemotron 3 Ultra81.43Qwen3.7 Max80.54Nemotron Cascade 2 30B A3B80.45MiMo v2.5 Pro79.9
···
123Qwen3 Max (Preview)48124Grok 4.347.6125Tri-21B-think Preview47.1

Strong at

B
Agents & work tasks#79 of 177Tool calling#95 of 242Knowledge#157 of 320
C
Coding#77 of 134Reasoning#230 of 336Science#208 of 312Long context#216 of 314Instructions#123 of 245Vision#82 of 125

Alternatives?

ModelScoreCostPer taskWhat changes
CheaperGemini 3 Flash Previewthinking+64%-28%$0.50 / $3BetterGPT OSS 20BhighOpen+37%-93%$0.011Context: 1M → 131K+1OpenMiniMax M3thinking+74%+247%$0.51Context: 1M → 524K+2CheaperGemini 3.1 Flash Litehigh+62%-59%$0.06CheaperMiniMax M2.7thinkingOpen+59%-27%$0.11Context: 1M → 205K+1

History

8 versions
50607080Jul 25Oct 25Jan 26Apr 26Release dateIFBench44.20 · Mar4.20 · Apr4.3
50607080Jul 25Oct 25Jan 26Apr 26Release dateIFBench44.20 · Mar4.3

Benchmarks

in Chat & Knowledge
AA Intelligence Index 4.3.214#157
AA Omniscience Index-33.1#158
AA Omniscience · Accuracy23.7#126
AA Omniscience · Hallucination Rate74.5#143
Humanity's Last Exam6.8#232
GPQA Diamond65.8#210
AA-LCR (long context) 1.132.3#218
IFBench (instructions)47.6#124
CritPt (physics)0#181
GDP.pdf · AA all-pass2.8#103
MLCR-AA5.6#75

FAQ

How much does Grok 4.3 cost?›

$1.25 per 1M input tokens and $2.50 per 1M output tokens; cached input $0.20 per 1M. A typical benchmark task costs about $0.15 at default effort.

Is Grok 4.3 free to use?›

There is no free API; the cheapest paid price is $1.25 per 1M input tokens.

How good is Grok 4.3, and what is it best at?›

#230 of 336 in Chat & Knowledge, #77 of 134 in Coding, #114 of 135 in Agents & Tool Use, #80 of 197 in Writing & Language, #82 of 125 in Vision & Documents.

Is Grok 4.3 better than Grok 4.20?›

On IFBench (instructions), Grok 4.3 scores 83.3 vs 81.2 — higher.

How can I use Grok 4.3?›

Through the API of AWS Bedrock, xAI.

What is the context window of Grok 4.3?›

1M tokens, with up to 900K output tokens.

When was Grok 4.3 released? Is there a newer version?›

Released 2026-04-17. It has been superseded by Grok 4.6.

Is Grok 4.3 open source?›

No, Grok 4.3 is a closed model available through an API. The closest open-weights option here is MiniMax M3.

Can Grok 4.3 read images?›

It accepts text and images, PDF files as input.

What is Grok 4.3?›

Grok 4.3 is a closed language model from xAI, released Apr 2026, the successor to Grok 4.20.

What are the best alternatives to Grok 4.3?›

Gemini 3 Flash Preview (cheaper), GPT OSS 20B (better), MiniMax M3 (open weights).