Grok 4.5
Grok 4.5Alternatives?
CheaperClaude Haiku 5.5max+54%-76%$0.21Remove sampling parameters+5
BetterGPT-6 Lunamax+25%-92%$0.068Function calling only with none · Chat Completions+3
OpenKimi K3max+11%+127%$2.00Sampling parameters are fixed+3CheaperGPT-6.1 Solmax+43%-18%$0.72Remove unsupported parameters+5
CheaperMiMo v2.6 ProthinkingOpen+7%-85%$0.13Pass back reasoning_content+3Claude Haiku 5.5max+54%-76%$0.21Remove sampling parameters+5GPT-6.1 Solmax+43%-18%$0.72Remove unsupported parameters+5GPT-6 Lunamax+25%-92%$0.068Function calling only with none · Chat Completions+3MiMo v2.6 ProthinkingOpen+7%-85%$0.13Pass back reasoning_content+3TInkling SmallthinkingOpen-21%-90%$0.089Context: 500K → 256K+1GPT-6 Lunamax+25%-92%$0.068Function calling only with none · Chat Completions+3MiMo v2.6 ProthinkingOpen+7%-85%$0.13Pass back reasoning_content+3Claude Haiku 5.5max+54%-76%$0.21Remove sampling parameters+5GPT-6.1 Solmax+43%-18%$0.72Remove unsupported parameters+5
Gemini 3.8 Flashhigh+32%+41%*$1.24Sampling parameters are ignored+1Kimi K3maxOpen+11%+127%$2.00Sampling parameters are fixed+3
GLM 5.3maxOpen+11%+128%$2.01No image input+4MiMo v2.6 ProthinkingOpen+7%-85%$0.13Pass back reasoning_content+3
Step 5 PreviewthinkingOpensame+17%$1.03web_search not available · Chat Completions+2TInkling SmallthinkingOpen-21%-90%$0.089Context: 500K → 256K+1Grok 4.7high+57%+210%$2.73Reasoning cannot be disabled+4Grok 4.6high+18%+69%$1.48Grok 4.3high-75%-77%$0.21Grok Build 0.1thinkingn/a—$1 / $2Context: 500K → 256KGrok 4.20 Multi-Agentn/a—$1.25 / $2.50Grok 4.20 Non-Reasoningn/a—$1.25 / $2.50Context: not verifiedGrok 4.20 Reasoningn/a—$1.25 / $2.50Context: not verifiedGrok 4.20 0309 Non Reasoningn/a—$1.25 / $2.50All xAI models →History
8 versionsBenchmarks
in Agents & Tool UseFAQ
How much does Grok 4.5 cost?›
$2 per 1M input tokens and $6 per 1M output tokens; cached input $0.30 per 1M. A typical benchmark task costs about $0.88 at high effort.
Is Grok 4.5 free to use?›
There is no free API; the cheapest paid price is $2 per 1M input tokens.
How good is Grok 4.5, and what is it best at?›
#33 of 334 in Chat & Knowledge, #39 of 132 in Coding, #24 of 133 in Agents & Tool Use, #24 of 195 in Writing & Language, #19 of 124 in Vision & Documents. Strongest at: Agents & work tasks, Reasoning, Science, Long context, Knowledge, Vision.
Is Grok 4.5 better than Step 5 Preview?›
On AA Analyst Agent, Grok 4.5 scores 35 vs 35 — about the same. It is 14% cheaper per task.
How can I use Grok 4.5?›
Through the API of xAI.
What is the context window of Grok 4.5?›
500K tokens, with up to 450K output tokens.
When was Grok 4.5 released? Is there a newer version?›
Released 2026-07-08. It has been superseded by Grok 4.6.
Is Grok 4.5 open source?›
No, Grok 4.5 is a closed model available through an API. The closest open-weights option here is Kimi K3.
Can Grok 4.5 read images?›
It accepts text and images, PDF files as input.
What is Grok 4.5?›
Grok 4.5 is a closed language model from xAI, released Jul 2026, the successor to Grok Build 0.1.
What are the best alternatives to Grok 4.5?›
Claude Haiku 5.5 (cheaper), GPT-6 Luna (better), Kimi K3 (open weights).