Grok 4.5
SpaceXAI· released 8 Jul 2026
x-ai/grok-4.5- Input / 1M tokens
- $2
- Output / 1M tokens
- $6
Longest answer: 450K tokens
About
Grok 4.5 is a model from SpaceXAI described for coding, knowledge work, and STEM. It accepts text, image, and file inputs, produces text, and supports vision, reasoning, and tools. Its context window is 500,000 tokens, and its maximum output is 450,000 tokens. The model was released on 2026-07-08 and is identified as x-ai/grok-4.5. Input costs $2 per 1M tokens, and output costs $6 per 1M tokens. These listed capabilities make its input formats, tool support, and token limits relevant when considering it for work-oriented tasks. The available facts do not specify audio or video input, so those modalities should not be assumed.
Who it is for
Grok 4.5 suits teams considering a model for coding, knowledge work, or STEM tasks. It accepts images and files alongside text, with reasoning and tools supported.
What is good
- Supports reasoning and tools.
- Accepts text, image, and file inputs.
- Context window is 500,000 tokens.
- Maximum output is 450,000 tokens.
What to know first
- Input costs $2 per 1M tokens.
- Output costs $6 per 1M tokens.
- Outputs text only.
Verdict
Grok 4.5 combines reasoning and tool support with image and file inputs and a 500,000-token context window. Its listed input and output prices are important considerations for teams evaluating fit.
Details
- Lab
- SpaceXAIopenrouter.ai · 3 Oct 2026
- Context
- 500Kopenrouter.ai · 3 Oct 2026
- Input price
- $2 / 1Mopenrouter.ai · 3 Oct 2026
- Output price
- $6 / 1Mopenrouter.ai · 3 Oct 2026
- Max output
- 450,000 tokensopenrouter.ai · 3 Oct 2026
- Inputs
- text, image, fileopenrouter.ai · 3 Oct 2026
- Open weights
- Noopenrouter.ai · 3 Oct 2026
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Sources
- openrouter.ai/x-ai/grok-4.5· checked 3 Oct 2026