Grok 4.1 Fast Reasoning
xAI Grok 4.1 fast reasoning model via Vertex AI (global endpoint)
ReasoningVisionToolsStructured output
Context window
2M
Max output
30K
Input price
$0.20 /1M
Output price
$0.50 /1M
Benchmarks
Independent benchmark scores — composite indices for reasoning, coding, and math, plus individual eval scores where available.
Intelligence Index38.6
Coding Index30.9
Math Index89.3
MMLU-Pro
85%
GPQA Diamond
85%
Humanity's Last Exam
18%
LiveCodeBench
82%
SciCode
44%
AIME 2025
89%
IFBench
53%
Long-context reasoning
68%
Terminal-Bench Hard
24%
τ²-Bench Telecom
93%
See full leaderboard →Benchmarks via Artificial Analysis · View on AA
Available routes
The same Grok 4.1 Fast Reasoning runs on 1 route through the Opper gateway. Each route has its own data-handling posture.
| Provider | Region | Zero data retention | Training | Logging | Contract | Input | Output |
|---|---|---|---|---|---|---|---|
| Google Cloud | EU | Opt-in | No | Abuse-monitoring logs (window not stated) + 24h in-memory cache. Search/Maps grounding adds 30-day retention with no opt-out. | PAYG | $0.20 | $0.50 |
Human review: Abuse-flagged only