grok-4.1-fast API price comparison
Grok 4.1 Fast is a frontier multimodal model from xAI, optimized for high-performance agentic tool calling, extremely long-context workflows (up to 2 million tokens), structured outputs, and fast reasoning — ideal for large-document processing, multi-step agents, and tool-enabled tasks.
Cheapest overall
DMXAPI
0.70 USD/M tokens combined per 1M tokens
Lowest input
DMXAPI
0.20 USD/M tokens input per 1M tokens
Lowest output
DMXAPI
0.50 USD/M tokens output per 1M tokens
Last refreshed
Jun 10, 2026
2 listed platforms
Best listed option
grok-4.1-fast is currently cheapest overall on DMXAPI, with input at 0.20 USD/M tokens and output at 0.50 USD/M tokens per million tokens.
Pricing insight
Across 2 listed routes, grok-4.1-fast is cheapest overall on DMXAPI at 0.70 USD/M tokens. The median combined price is 0.75 USD/M tokens, so the cheapest route is about 7% below the median listed route.
-
Lowest total cost
DMXAPI
Best first check for balanced coding-agent sessions: 0.70 USD/M tokens.
-
Prompt-heavy work
DMXAPI
Useful for large repositories and long context reads: 0.20 USD/M tokens input.
-
Response-heavy work
DMXAPI
Useful for long answers, edits, and agent loops: 0.50 USD/M tokens output.
Median combined price
0.75 USD/M tokens
Baseline for judging whether the cheapest route is unusually low.
Cache price coverage
0%
0 of 2 routes publish cache read or write prices.
Fresh rows
0/2
Routes crawled in the last 72 hours.
Use case fit
grok-4.1-fast from xAI can be compared by input, output, and combined per-million-token cost to select the most economical API route.
Platform price comparison
| Platform | Ratio | Input | Output | Total |
|---|---|---|---|---|
| DMXAPI | 0.83x | 0.20 USD/M tokens | 0.50 USD/M tokens | 0.70 USD/M tokens |
| Crazyrouter | 1.00x | 0.30 USD/M tokens | 0.50 USD/M tokens | 0.80 USD/M tokens |
FAQ
Where is grok-4.1-fast cheapest?
DMXAPI has the lowest listed combined price at 0.70 USD/M tokens per 1M tokens.
What do input and output prices mean?
Input is charged for prompt tokens you send. Output is charged for tokens generated by the model.
How often are prices refreshed?
Prices are crawler-backed and this page was last refreshed Jun 10, 2026. Always confirm before large purchases.