Grok 4.5 pricing
API list price by xAI · same on x-ai · checked Oct 23, 2026
$2 / $6per 1M tokens in / out
$0.30cache read · −85%
$0.88per task at high?
#118on OpenRouter by tokens · 45.4B / week
Price sheetper 1M tokens
| Input | $2 | list |
| Output | $6 | |
| Cache read | $0.30 | −85% vs input |
| Context · max output | 500K · 450K | tokens |
Where to buy2 providers · per 1M tokens
| Provider | Input | Output | Context |
|---|---|---|---|
| x-ai | $2 | $6 | — |
| xAIlab | $2 | $6 | 500K |
In xAI's line-upper 1M in / out
| Grok 4.20 Non-Reasoning | $1.25 / $2.50 | −48% |
| Grok 4.20 Reasoning | $1.25 / $2.50 | −48% |
| Grok 4.20 0309 Non Reasoning | $1.25 / $2.50 | −48% |
| Grok 4.20 0309 Reasoning | $1.25 / $2.50 | −48% |
| Grok 4.20 Multi Agent 0309 | $1.25 / $2.50 | −48% |
| Grok 4.5 | $2 / $6 | this model |
| Grok 4.7 | $2 / $6 | 0% |
Cheaper for the same workvs Grok 4.5 at high
| GPT-6.1 Sol max | -18% | score +34% | $0.72 |
| MiMo v2.6 Pro thinkingOpen | -85% | score +19% | $0.13 |
| GPT-6 Astra low | -7% | score +18% | $0.82 |
| DeepSeek V4.1 Flash 1017 maxOpen | -70% | score +16% | $0.26 |
| GPT-6 Sol xhigh | -41% | score +14% | $0.52 |
Pricing questions
How much does Grok 4.5 cost?›
$2 per 1M input tokens and $6 per 1M output tokens on xAI's API and x-ai. Cached input is $0.30. One Intelligence Index task costs about $0.88 at the default effort.
Is Grok 4.5 free to use?›
There is no free API tier.
How much does prompt caching save?›
Cache reads cost $0.30 per 1M, 85% below the input price.
Is Grok 4.5 cheaper than Grok Build 0.1?›
No: $2 / $6 against $1 / $2, 140% more per token.
What is a cheaper alternative to Grok 4.5?›
GPT-6.1 Sol at max effort costs -18% per task with a score +34% on Humanity's Last Exam.