Microsoft Azure AI Foundry · Grok 4.1 Fast (reasoning)
grok-4-1-fast-reasoningAvailable from the provider.
- Releasedunknown
- Deprecatednot announced
- Retirednot announced
Tags
Editorial tags reflect our assessment; documented tags are backed by the sources below.
Specifications
- Input price
- $0.20 / M tok
- Output price
- $0.50 / M tok
- Price class
- Budget
- Context window
- 128K tokens
- Max output
- unknown
- Released
- unknown
- Input modalities
- text
- Output modalities
- text
- Knowledge cutoff
- unknown
- Tool use
- unknown
- Structured output
- unknown
- License
- unknown
- Maker
- xAI
Use it for
No editorial profile yet — the specifications and derived alternatives below are generated from the data.
Alternatives
What to use instead. Curated suggestions are written by our editors for this model; derived ones are ranked automatically from tags, tier and price class.
- GPT-5 nanoderived
Microsoft Azure AI Foundry
gpt-5-nano-2025-08-07Same provider, same tier (small), similar price; shares chat, coding, reasoning and agents.
In $0.05 / M tokOut $0.40 / M tok
ActiveTextVisionChat+7 - GPT-5.4 nanoderived
Microsoft Azure AI Foundry
gpt-5.4-nano-2026-03-17Same provider, same tier (small), similar price; shares chat, coding, reasoning and agents.
In $0.20 / M tokOut $1.25 / M tok
ActiveTextVision
Change history
Status and price changes for this model, newest first. See all changes →
- Price change
- Input
- — to $0.20 (no comparable price) / M tok
- Output
- — to $0.50 (no comparable price) / M tok
Price history
| Date | Input | Output | Change |
|---|---|---|---|
| (current) | $0.20 | $0.50 | ▲ increased |
| — | — | first record |
Sources & verification
Facts
Status, dates, pricing and specifications were verified against these pages.
Last verified: (2026-09-10 12:00) · ✓ verified