GPT-5.4 Nano vs Grok 4.1 Fast
Grok 4.1 Fast costs 2.5x less per output token.
Which Is Cheaper?
At 1M tokens/mo
GPT-5.4 Nano: $1
Grok 4.1 Fast: $0
At 10M tokens/mo
GPT-5.4 Nano: $7
Grok 4.1 Fast: $4
At 100M tokens/mo
GPT-5.4 Nano: $73
Grok 4.1 Fast: $35
Which Performs Better?
| Test | GPT-5.4 Nano | Grok 4.1 Fast |
|---|---|---|
| Structured Output | — | — |
| Strategic Analysis | — | — |
| Constrained Rewriting | — | 2 |
| Creative Problem Solving | — | — |
| Tool Calling | — | — |
| Faithfulness | — | — |
| Classification | — | — |
| Long Context | — | — |
| Safety Calibration | — | — |
| Persona Consistency | — | — |
| Agentic Planning | — | — |
| Multilingual | — | — |