API providers, route pricing, availability, and recent reliability signals.
Latency, throughput, and reliability signals from recent traffic.
Effective prices over the last 30 days, with current provider list prices for context.
Headline benchmark standings and comparison context.
Daily gateway activity over the last 30 days, with current UTC-day pace projection.
Public apps observed in gateway request traffic for this model.
Uptime trend for this model over the last 24 hours.
Start calling this model with endpoint-specific examples.
Key dates, capabilities, and model metadata.
Commercial plans and bundled access that currently include this model.
SpaceXAI: Grok 4 Fast Reasoning
Latency, throughput, and reliability signals from recent traffic.
Weighted provider pricing over the last 30 days, with recent route pricing history below.
Headline benchmark standings and comparison context.
Daily gateway activity over the last 30 days, with current UTC-day pace projection.
Public apps observed in gateway request traffic for this model.
Uptime trend for this model over the last 24 hours.
Start calling this model with endpoint-specific examples.
Key dates, capabilities, and model metadata.
20 Sept 2025·10 months ago
20 Sept 2025·10 months ago
Not listed
Not listed
Parameters
Not listed
License
Proprietary
Training Tokens
Not listed
Input
Output
Choose a supported endpoint, pick a main language, then select the example style you want to copy.
Supported API reference routes for this model.
import Phaseo from '@phaseo/sdk';
const client = new Phaseo({
apiKey: process.env.PHASEO_API_KEY,
});
const response = await client.generateResponse({
"model": "spacex-ai/grok-4-fast-reasoning",
"input": "Give me one fun fact about cURL."
});
const outputText = response.output
?.flatMap((item) => item.content ?? [])
.find((item) => item.type === "output_text")
?.text;
console.log(outputText ?? response);Top benchmark results for spacex-ai/grok-4-fast-reasoning.
Detailed benchmark comparisons now live in the Compare tool.