All modelsxAI
Grok 4.1 Fast
Budget-tier coding leader. Cheapest credible agent for high-volume workloads.
Fast / CheapProprietary2M contextReleased Jan 2026textvisioncode
API price · per 1M tokens
$0.2/$0.5
input / output
≈ $0.28/M blended
Benchmarks
Bar shows this model's score; tick shows the best score across all tracked models for context.
SWE-bench VerifiedReal GitHub issues, human-verified patches. The standard coding-agent benchmark.
70.0/ best 90.1GPQA DiamondGoogle-proof graduate-level science Q&A. General reasoning proxy.
68.0/ best 94.4MMLU-ProMulti-task language understanding across 120+ academic subjects.
76.0/ best 93.0HumanEval+Functional code generation from docstrings.
90.5/ best 96.0MATH-500Competition-style math problems.
93.0/ best 97.8