Grok 4.5 — AI Text Generator
Grok 4.5 is available on Artifio.ai as part of our unified AI workspace. Powered by xAI. Starting at about $0.150 per generation.
About Grok 4.5
Grok 4.5 is the frontier text model from xAI (which now operates under the SpaceXAI name), released on July 8, 2026. The company built it for coding, agentic tasks, and knowledge work, training it in its Memphis data centers on new datasets spanning science, engineering, and math. Elon Musk pitched it as an Opus-class model that is faster, more token-efficient, and lower cost than Anthropic's flagship, and independent benchmarking broadly backed the framing while stopping short of best-in-class.
It is the default model of the Grok Build coding agent and ships across Cursor, the Word, PowerPoint, and Excel add-ins, and major model gateways. On artifio.ai it runs in the same workspace as 100+ other models, billed per generation from one wallet.
Features
- 500,000-token context window, with a higher rate applied to requests past 200K tokens.
- Configurable reasoning effort at low, medium, or high, defaulting to high.
- Text and image input with text output.
- Function calling, structured outputs, and server-side web search, X search, and code execution tools.
- Prompt caching with cached input tokens billed at a quarter of the standard rate.
- Knowledge cutoff of February 1, 2026.
- Available through the xAI API, Grok Build, Cursor, Office add-ins, and gateways including OpenRouter, Vercel, Cloudflare, Snowflake, and Databricks.
What people use it for
- Agentic coding: it is the default engine of Grok Build and was tuned on real editor session data.
- Long-running legal, finance, and research tasks that chain many tool calls.
- Office and clerical work such as drafting, analysis, and document preparation inside the Microsoft add-ins.
- Cost-sensitive deployments that want near-frontier reasoning without frontier per-token prices.
Reported strengths
- Scored 54 on the Artificial Analysis Intelligence Index, fourth overall behind only Fable 5, GPT-5.5, and Opus 4.8, and 16 points above Grok 4.3.
- Scored 76 on the Artificial Analysis Coding Agent Index in the Grok Build harness, on par with GPT-5.5 in Codex.
- Exceptional token efficiency: about 1.9M tokens per coding task versus 6.2M for GPT-5.5 and 7.2M for Fable 5 in the same evaluation.
- Priced well below Opus-class competitors per token while landing in their benchmark neighbourhood.
Reported limitations
Grok 4.5 FAQ
What is Grok 4.5?
Grok 4.5 is an AI model (prompt to text) available on Artifio.ai through xAI. You can run it in our workspace from a single shared wallet and download your outputs.
How much does Grok 4.5 cost on Artifio?
Grok 4.5 starts at about $0.150 per generation on Artifio.ai. The exact cost is shown in the workspace before you confirm and can vary with the options you select.
How do I use Grok 4.5 on Artifio?
Click Generate Now to open the workspace at /create/grok-4-5. Fill in the form fields, review the live cost estimate, and run your generation.
What kind of outputs does Grok 4.5 produce?
Grok 4.5 is configured for prompt to text workflows in the text category. See the technical parameters below for supported inputs and options.
Can I try Grok 4.5 for free?
Sign up free, top up your wallet from $5, and you can run Grok 4.5 pay-as-you-go without a separate subscription for this model.
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Try Grok 4.5 on Artifio
Open the workspace with this model pre-selected. Your prompt and settings stay in the browser until you generate.
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