Grok 4.1 Fast Reasoning vs Grok 4.1 Fast Reasoning latest
Grok 4.1 Fast Reasoning vs Grok 4.1 Fast Reasoning latest: Grok 4.1 Fast Reasoning is cheaper by 0% on average. Grok 4.1 Fast Reasoning from Azure AI Foundry (131,072-token context, reasoning, tool calls) vs. Grok 4.1 Fast Reasoning latest from xAI (2,000,000-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 latest is 0% cheaper than Grok 4.1 Fast Reasoning — a savings of $0.000000/month ($0.000000/year).
Production recipe — Agent Command Center
strategy: cost-optimized
primary:
model: grok-4-1-fast-reasoning-latest
provider: xai
fallback:
model: grok-4-1-fast-reasoning
provider: azure-ai-foundry
shadow: { sample_rate: 0.05 } # mirror 5% of traffic to compare quality live| Grok 4.1 Fast Reasoning | Grok 4.1 Fast Reasoning latest | |
|---|---|---|
| Input price | $0.200/M | $0.200/M |
| Output price | $0.500/M | $0.500/M |
| Context window | 131,072 | 2,000,000 |
| Max output | 131,072 | 2,000,000 |
| Function calling | ✓ | ✓ |
| Vision | — | ✓ |
| Audio input | — | ✓ |
| Reasoning | ✓ | ✓ |
| Prompt caching | — | ✓ |
| Structured output | ✓ | ✓ |
| Pricing verified | May 12, 2026 | May 12, 2026 |
Cheaper option