xAI: grok-4.5
grok-4.5
500K context500K outReasoningToolsVisionFilesCacheStructuredWeb search
Released Jul 8, 2026Knowledge cutoff 2026Updated Jul 8, 2026
Grok 4.5 is SpaceXAI's smartest model with frontier performance on coding, knowledge work, and STEM.
Mode chatTokenizer Grok
Pricing
Input price
$0.05/ 1M tokens$2.0098% off
Output price
$0.15/ 1M tokens$6.0098% off
Context window 500K tokensCompatible endpoints openai, anthropicVendor xAI
Performance
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Usage & Ranking
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Supported parameters
All providers = every upstream serving this model supports it. Some providers = depends on which upstream handles the request. Default = the value sent when you leave the parameter unset.
| Parameter | Providers | Default |
|---|---|---|
| frequency_penalty | All providers | Not sent by default |
| include_reasoning | All providers | - |
| logprobs | All providers | - |
| max_tokens | All providers | - |
| presence_penalty | All providers | Not sent by default |
| reasoning | All providers | - |
| reasoning_effort | All providers | - |
| repetition_penalty | Some providers | Not sent by default |
| response_format | All providers | - |
| seed | All providers | - |
| stop | All providers | - |
| structured_outputs | All providers | - |
| temperature | All providers | Not sent by default |
| tool_choice | All providers | - |
| tools | All providers | - |
| top_k | Some providers | Not sent by default |
| top_logprobs | All providers | - |
| top_p | All providers | Not sent by default |
