Grok 3 Fast Beta
JSON →A faster, optimized beta version of Grok 3 from xAI designed for lower latency responses.
Specs
context window 131K tokens
max output 131K tokens
input price $5 / 1M tokens
output price $25 / 1M tokens
Capabilities
tool-usejson-modestreamingreasoningcode-generationfunction-callingprompt-caching
Dates
releasedJan 2025
knowledge cutoffJan 2025
Resources
API
full doc /v1/models/grok-3-fast-beta