Grok 4.1 Fast on Multio
Grok 4.1 Fast is the speed-tuned Grok — most of Grok 4's traits at conversational latency. The default xAI model for everyday chat on Multio.
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Grok 4.1 Fast specs
| Spec | Grok 4.1 Fast |
|---|---|
| Provider | xAI |
| Free tier | No |
| Context window | 2M tokens |
| Max output tokens | 30K tokens |
| Input modalities | Text, Image, File |
| Output modalities | Text |
| Input price (per 1M tokens) | $0.20/M |
| Output price (per 1M tokens) | $0.50/M |
- Vision
- Reasoning
- Coding
- Long context
- by xAI
What Grok 4.1 Fast is good at
- Fast responses with real-time search still attached
- Live news Q&A at near-instant speed
- Direct conversational tone with low latency
- Quick code suggestions with opinionated framing
- Streaming back partial answers fast enough for live use
Best Multio use cases for Grok 4.1 Fast
The short version
The everyday Grok. Use it first; reach for Grok 4 only on the hard cases.
Compare Grok vs other AI models
FAQ
- Is Grok 4.1 Fast on Multio free?
- Grok 4.1 Fast is a premium model and is BYOK on Multio. Add your xAI API key in /settings/api-keys, and your provider bills you directly for usage. Free models (Llama, DeepSeek, Mistral, Qwen) ship on the workspace tier.
- How does Grok 4.1 Fast compare to other AI models?
- Run Grok 4.1 Fast alongside GPT-5, Claude, Gemini and other leading models on Multio to see head-to-head responses on your own prompts.
- When should I use a different model instead of Grok 4.1 Fast?
- Switch up to Grok 4 when answers start feeling shallow; switch to Gemini Flash when the task is multimodal.
- Can I use Grok 4.1 Fast with my own files?
- Yes. Upload PDFs, docs, code, and images — Grok 4.1 Fast will ground its answers in your files automatically.
- Who makes Grok 4.1 Fast?
- Grok 4.1 Fast is built by xAI and is available inside Multio's agent platform on supported plans.