MiniMax M3.1 Flash Preview API pricing and setup
MiniMax M3.1 Flash Preview (minimax-m3.1-flash-preview) is a MiniMax model. It is available through the relay.fast API with one relay.fast key and pay-as-you-go billing.
Prices checked from the live catalog. "From" is the lowest price among the relay.fast sources that currently serve the model. The price you pay depends on the source your request uses and can change on any day. The pricing page always shows current values.
| Official input price | $0.6 per 1M tokens |
|---|---|
| Official output price | $2.4 per 1M tokens |
| relay.fast input from | $0.1 per 1M tokens |
| relay.fast output from | $0.4 per 1M tokens |
| Cache read from | $0.02 per 1M tokens |
| Lower than the official price by | up to 83% |
| Context window | 1M tokens |
| Endpoints | /v1/chat/completions |
Example request
Keep the key in the RELAY_FAST_API_KEY environment variable.
curl https://relay.fast/v1/chat/completions \
-H "Authorization: Bearer $RELAY_FAST_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"minimax-m3.1-flash-preview","messages":[{"role":"user","content":"Hello"}]}'Use MiniMax M3.1 Flash Preview in coding tools
Setup guides: Claude Code, Codex, Cursor, Cline, Kilo Code, OpenCode, Aider. The API docs have one-command installers.
Frequently asked questions
How much does the MiniMax M3.1 Flash Preview API cost?
On 2026-11-05, relay.fast charges from $0.1 per 1M input tokens and $0.4 per 1M output tokens for MiniMax M3.1 Flash Preview, against the official $0.6 and $2.4. The price depends on the source your request uses and can change; https://relay.fast/pricing/minimax-m3.1-flash-preview shows the current value.
What is the context window of MiniMax M3.1 Flash Preview?
MiniMax M3.1 Flash Preview accepts up to 1M tokens of context in the relay.fast catalog. Output limits depend on the model and client settings.
Which API endpoint does MiniMax M3.1 Flash Preview use?
Call /v1/chat/completions with a relay.fast API key. OpenAI-compatible SDKs use the base URL https://relay.fast/v1.
Do I need a MiniMax account to use MiniMax M3.1 Flash Preview?
No. You use a relay.fast account and API key. relay.fast is an independent API gateway and is not affiliated with MiniMax.