- Developers & Engineers: Integrate into chatbots, live-support tools, or pipelines needing rapid responses.
- Stems & Coding Teams: Use in prompt-heavy reasoning or debugging flows where speed matters.
- Enterprises: Streamline high-throughput tasks—like document parsing or transactional Q&A.
- Researchers & Analysts: Get faster responses without trading off depth or clarity.
- Startups & Scaleups: Leverage full Grok 3 quality at lower latency for competitive UX.
How to Use Grok 3 Fast?
- Access via xAI API: Available under the model ID `grok-3-fast-beta` (or `grok-3-fast`).
- Submit Multimodal Prompts: Send text and optional images using the full 131K token context window.
- Await Accelerated Response: Enjoy quicker turnaround compared to standard Grok 3, with same-quality outputs.
- Monitor Usage & Cost: Charged at $5 per M input tokens and $25 per M output tokens.
- Scale Integration: Compatible with OpenAI-style APIs—easily integrate via platforms like Promptfoo or Requesty.
- Speed with Parity: Same textual and reasoning results as flagship Grok 3 but served faster thanks to optimized infrastructure.
- Large Context: Supports up to 131K tokens—ideal for complex, long-form tasks.
- Consistent Quality: Doesn’t sacrifice output fidelity—just serves it quicker.
- Multimodal & Reasoning Power: Still includes chain-of-thought, multimodal input, and structured outputs.
- Standard API Integration: Works seamlessly in existing pipelines—OpenAI-compatible.
- Identical reasoning, code, and multimodal abilities as Grok 3
- Quickest response delivery—great for live systems
- Large context window without quality trade-offs
- Easy integration via existing OpenAI-style frameworks
- Excellent for real-time, high-throughput environments
- Higher cost than standard Grok 3: $5/$25 per M tokens
- Doesn’t include transparent thinking mode—use Grok‑3 Mini for that
- "Big Brain" mode remains unavailable in fast tier—limited to flagship or Mini paths
Free Tier
$ 0.00
Limited access to DeepSearch
Limited access to DeeperSearch
Super Grok
$30/month
More Aurora Images - 100 Images / 2h
Even Better Memory - 128K Context Window
Extended access to Thinking - 30 Queries / 2h
Extended access to DeepSearch - 30 Queries / 2h
Extended access to DeeperSearch - 10 Queries / 2h
API
$5/$25 per 1M tokens
Cached Input - $1.25/M
Output - $25.00/M
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Editorial Note
This page was researched and written by the ATB Editorial Team. Our team researches each AI tool by reviewing its official website, testing features, exploring real use cases, and considering user feedback. Every page is fact-checked and regularly updated to ensure the information stays accurate, neutral, and useful for our readers.
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