Grok 4.1 Fast Reasoning vs Grok Code Fast 1.0825
Grok 4.1 Fast Reasoning vs Grok Code Fast 1.0825: Grok 4.1 Fast Reasoning is cheaper by 67% on average. Grok 4.1 Fast Reasoning from xAI (2,000,000-token context, reasoning, tool calls) vs. Grok Code Fast 1.0825 from xAI (256,000-token context, reasoning, tool calls). Use Agent Command Center to A/B both in shadow mode and pick the winner per workload.
Side-by-side cost
Live workload comparison
Same workload run through both models. The cheaper one is highlighted.
3,000
02,000,000
400
0200,000
5,000
01,000,000
At this workload, Grok 4.1 Fast Reasoning is 33% cheaper than Grok Code Fast 1.0825 — a savings of $60.88/month ($731/year).
Production recipe — Agent Command Center
strategy: cost-optimized
primary:
model: grok-4-1-fast-reasoning
provider: xai
fallback:
model: grok-code-fast-1-0825
provider: xai
shadow: { sample_rate: 0.05 } # mirror 5% of traffic to compare quality live| Grok 4.1 Fast Reasoning | Grok Code Fast 1.0825 | |
|---|---|---|
| Input price | $0.200/M | $0.200/M |
| Output price | $0.500/M | $1.50/M |
| Context window | 2,000,000 | 256,000 |
| Max output | 2,000,000 | 256,000 |
| Function calling | ✓ | ✓ |
| Vision | ✓ | — |
| Audio input | ✓ | — |
| Reasoning | ✓ | ✓ |
| Prompt caching | ✓ | ✓ |
| Structured output | ✓ | — |
| Pricing verified | May 12, 2026 | May 12, 2026 |