Grok 4.5: release date and what it's for
Released , according to xAI's release notes. Identical pricing and context to 4.6, five weeks earlier. No reason to pick it now.
- Status
- Live
- Released
- Lab
- xAI
- Input
- $2per million tokens
- Output
- $6per million tokens
- Context window
- 500Ktokens
- Max output
- Not published
API model ID: grok-4.5
What we've written about Grok 4.5
September 23, 2026
Grok 4.7, Grok 4.8 and Grok Build: which Grok is out and what each one is for
Grok 4.7 shipped ten days after Musk said it needed a few more days, and the next one has a size but no date.
How Grok 4.5 compares on price and context
inputoutput
- GPT-6 Astra$10 / $50
- Grok 4.5$2 / $6
- Grok 4.7$2 / $6
- Grok 4.6$2 / $6
- Muse Spark 1.3$1.25 / $4.25
- Gemini 3.8 Flash$0.75 / $3.75
- Grok Build 0.1$1 / $2
how much it reads at once
- GPT-6 Astra1.05M
- Muse Spark 1.31.05M
- Gemini 3.8 Flash1.05M
- Grok 4.5500K
- Grok 4.7500K
- Grok 4.6500K
- Grok Build 0.1256K
Next to the newest xAI models and the current model from other labs. Prices are in US dollars per million tokens.
What is Grok 4.5?
Grok 4.5 is a model from xAI, built in the US. It's out, and you can use it today.
When did Grok 4.5 come out?
xAI released it on July 8, 2026. That date comes from xAI's release notes.
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More news: xAI news and Grok updates
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