Models · /models/grok-4-fast
Grok 4 Fast
xAI · Closed weights · mid · registry tag 2026 efficient
textcodevisionsearch7 aliases7 official receipts
Build / data stamp
Read this before trusting a headline.
Data snapshot May 1, 2026Registry verification passed9 providers · 826 tracked modelsPage refreshed May 7, 2026
Model pages expose the current registry snapshot and page stamp so stale deployments are visible without reading the code.
Score passport by benchmark
Each row keeps the benchmark receipt, source family, raw metric, and percentile inside its exact comparable group.
Thin verified coverageThis model currently reads as thin verified coverage across the resolved evidence surface.
Intelligence Index
AA · Chat / text · Composite
It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.
52.2% percentile inside its comparable group
23Raw benchmark value
Time to first token
AA · Chat / text · Speed / cost
It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.
15.5% percentile inside its comparable group
8.02sRaw benchmark value
Text Arena
AR · Chat / text · Human
It tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.
74.1% percentile inside its comparable group
1,397Raw benchmark value
Code Arena
AR · Coding · Human
It tells you whether the model can generate, repair, and reason over code under evaluator pressure rather than marketing examples.
3.3% percentile inside its comparable group
1,149Raw benchmark value
WebDev Arena
AR · Coding · Human
It tells you whether the model can generate, repair, and reason over code under evaluator pressure rather than marketing examples.
3.3% percentile inside its comparable group
1,149Raw benchmark value
Search Arena
AR · Search / tool use · Human
It matters when the model must browse, call tools, and recover useful answers from external systems.
48.1% percentile inside its comparable group
1,172Raw benchmark value