Grok 4.5
Grok 4.5Alternatives?
CheaperGemini 3 Flash Previewunstated+29%-63%$0.50 / $3
BetterClaude Opus 5unstated+47%+233%$5 / $25
OpenKimi K3unstated+14%+100%$3 / $15Sampling parameters are fixed+3CheaperGemini 3.6 Flashunstated+23%-50%*$0.75 / $3.75CheaperClaude Haiku 5.5unstated+19%-93%$0.10 / $0.50Remove sampling parameters+5Gemini 3 Flash Previewunstated+29%-63%$0.50 / $3Gemini 3.6 Flashunstated+23%-50%*$0.75 / $3.75Claude Haiku 5.5unstated+19%-93%$0.10 / $0.50Remove sampling parameters+5
Muse Sparkunstated+19%-33%$1.25 / $4.25Only n=1 · Meta / Chat Completions+1Muse Spark 1.2unstated+14%-33%$1.25 / $4.25Only auto tool_choice is supported+1Claude Opus 5unstated+47%+233%$5 / $25Gemini 3.1 Pro Previewunstated+36%+50%$2 / $12Cannot use both thinking controlsGemini 4 Argonunstated+36%+33%*$2 / $10Synchronous output stops at 65,536+2Claude Fable 5unstated+30%+567%$10 / $50Gemini 3 Flash Previewunstated+29%-63%$0.50 / $3Kimi K3unstatedOpen+14%+100%$3 / $15Sampling parameters are fixed+3
MiniMax M3unstatedOpen+7%-83%$0.30 / $1.20No strict JSON+1
MiMo v2.6 ProunstatedOpen+4%-82%$0.43 / $0.87Pass back reasoning_content+3
Hy4 previewOpensame-58%$0.83 / $2.50No image input
GLM 5.3unstatedOpensame-28%$1.40 / $4.40No image input+4History
8 versionsBenchmarks
in Chat & KnowledgeFAQ
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 $0.76 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?›
#35 of 336 in Chat & Knowledge, #41 of 134 in Coding, #26 of 135 in Agents & Tool Use, #28 of 197 in Writing & Language, #20 of 125 in Vision & Documents. Strongest at: Agents & work tasks, Reasoning, Science, Long context, Knowledge, Vision.
Is Grok 4.5 better than GPT-5.6 Terra?›
On Vals MedCode, Grok 4.5 scores 43.3 vs 43.4 — about the same.
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 It has been superseded by Grok 4.6.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?›
Gemini 3 Flash Preview (cheaper), Claude Opus 5 (better), Kimi K3 (open weights).