Grok 4.3
Grok 4.3Alternatives?
CheaperMiMo v2.6 ProthinkingOpen×7.3-22%$0.13Pass back reasoning_content+3
BetterGPT-6 Lunalow×3-97%$0.005Function calling only with none · Chat Completions+3CheaperGPT-6.1 Sollow×7-23%$0.13Remove unsupported parameters+5
CheaperClaude Haiku 5.5xhigh×6.3-27%$0.12Remove sampling parameters+5CheaperGrok Build 0.1thinking×5.7-20%$1 / $2Context: 1M → 256KMiMo v2.6 ProthinkingOpen×7.3-22%$0.13Pass back reasoning_content+3GPT-6.1 Sollow×7-23%$0.13Remove unsupported parameters+5Claude Haiku 5.5xhigh×6.3-27%$0.12Remove sampling parameters+5GPT-6 Lunamax×5.7-60%$0.068Function calling only with none · Chat Completions+3Grok Build 0.1thinking×5.7-20%$1 / $2Context: 1M → 256KGPT-6 Lunalow×3-97%$0.005Function calling only with none · Chat Completions+3GPT-5.6 Lunalow×2.9-94%$0.01GPT OSS 20BhighOpen+62%-93%$0.011Context: 1M → 131K+1
Mistral Small 4thinkingOpen+46%-91%$0.015Context: 1M → 262K
Nemotron 3 Nano 30B A3BthinkingOpen+68%-90%$0.017Context: 1M → 131K+1MiMo v2.6 ProthinkingOpen×7.3-22%$0.13Pass back reasoning_content+3
Kimi K3maxOpen×6.9+1,078%$2.00Sampling parameters are fixed+3
Step 5 PreviewthinkingOpen×6.9+505%$1.03web_search not available · Chat Completions+2
Muse Spark OpenxhighOpen×6.5+397%$0.84Reasoning off leaves output unchanged · Self-hosted / llama.cpp+1
DeepSeek V4.1 Flash 1017maxOpen×6.4+54%$0.26Pass back reasoning_content · Chat Completions+4History
8 versionsBenchmarks
in Chat & KnowledgeFAQ
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 $0.17 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?›
#228 of 334 in Chat & Knowledge, #75 of 132 in Coding, #112 of 133 in Agents & Tool Use, #52 of 195 in Writing & Language, #81 of 124 in Vision & Documents.
Is Grok 4.3 better than Grok 4.20?›
On Humanity's Last Exam, Grok 4.3 scores 37.2 vs 34.5 — 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 It has been superseded by Grok 4.6.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 MiMo v2.6 Pro.
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?›
MiMo v2.6 Pro (cheaper), GPT-6 Luna (better).