Grok 4.1 Fast
xAI's value tier — synthesized ~58% on DualEntry, massive 2M context at rock-bottom pricing.
Accounting overall
57.5%
Input / Output
$0.20 / $0.50 per MTok
Context
2M
Speed
~200 tok/s
Released
2026-02
Cutoff
2025-12
Eight accounting-task categories borrowed from DualEntry's 101-task benchmark. Measured where published, synthesized from adjacent benchmarks otherwise.
Grok 4.1 Fast is not yet on DualEntry's published leaderboard, so our accounting-task scores are **synthesized** from adjacent benchmarks, public sentiment, and editorial judgment — we estimate ~58% overall, which would place it in the lower-middle of the roster on capability.
What Grok 4.1 Fast does dominate: cost ($0.20 / $0.50 per MTok), context (2M tokens — double any other model on the index), and speed (~200 tok/s). For agentic workflows where the accounting task is narrow enough that ~60% accuracy on structured sub-tasks is acceptable with a human reviewer — and where the context window matters for ingesting years of ledger history — Grok 4.1 Fast is a legitimate option that deserves more serious evaluation than its brand position usually gets in finance circles.
Synthesized score — update when DualEntry publishes a measured number.
Citations
- AI Cost Check — xAI Grok pricing 2026aicostcheck.com/blog/xai-grok-pricing-guide-2026