Grok 3 Mini Fast
by xAIChat
A lightweight model that thinks before responding. Fast, smart, and great for logic-based tasks that do not require deep domain knowledge. The raw thinking traces are accessible.
- Context
- 131K tokens
- Max output
- 131,072 tokens
- Weights
- unknown
xai/grok-3-mini-fast · also seen as grok-3-mini-fast-latest
Specifications
Full facts as recorded, incl. what is unknown.
- Released
- —
- Weights
- unknown
- Input
- Text
- Output
- Text
- Context window
- 131,072 max across endpoints
- Max output
- 131,072
- Providers
- 2 + 1 gateway, not counted as providers
- Epoch Capabilities Index
- not evaluated
- Direct price range
- $0.60 in · $4.00 out per 1M tokens · across all 2 providers
More details
- Last updated
- —
- Knowledge cutoff
Capabilities
Across all endpoints: supported if any endpoint supports it.
- Tool calling
- Parallel toolsunknown
- Structured output
- Reasoningunknown
- Image inputunknown
- PDF inputunknown
- Audio inputunknown
- Audio outputunknown
- Video inputunknown
- Prompt cachingunknown
- Web searchunknown
- Computer useunknown
- System messagesunknown
- Assistant prefillunknown
- Temperatureunknown
- Streaming
- Attachmentsunknown
Endpoints
One row per provider and variant; gateways are listed separately.
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Price history
Atom feedNo change since 19 Oct 2026. The cheapest direct price has been $0.60 in / $4.00 out per 1M tokens at xAI on every data refresh since then.
Tracked from 19 Oct 2026. Headline-eligible direct prices only, so a price the sanity check flags never draws a spike. Series as JSON
Cost calculator
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Similarly priced models
Blended rate per 1M tokens, each at its own cheapest provider (10M input : 2M output mix).
| Model | Blended/1M | In/1M | Out/1M | Context | vs Grok 3 Mini Fast |
|---|---|---|---|---|---|
| GPT-3.5 TurboOpenAI | $1.17 | $1.00 | $2.00 | 16.4K | +0% |
| Grok Build 0.1xAI | $1.17 | $1.00 | $2.00 | 256K | +0% |
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| Seed 2.1 ProByteDance Seed | $1.18 | $0.707 | $3.54 | 256K | +1% |
| Nova ProAmazon | $1.20 | $0.799 | $3.20 | 300K | +3% |
| Pareto 26.10Unbiased AI | $1.20 | $0.80 | $3.20 | 1.05M | +3% |
| Hy4 previewTencent | $1.11 | $0.834 | $2.50 | 1.05M | −5% cheaper |
| GLM-5V-TurboZ.ai (Zhipu AI) | $1.10 | $0.704 | $3.10 | 200K | −5% cheaper |
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