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How to use MiniMax H3 Max in ChatGPT

ChatGPT needs Flow AI Fx MCP before it can run MiniMax H3 Max. Connect https://flowaifx.app/mcp, sign in, and ask for MiniMax H3 Max with references.

MiniMax H3 Max on Flow AI Fx is 1–15 seconds at 480p, 768p, or 1080p, with image, video, and audio references. ChatGPT reaches it through https://flowaifx.app/mcp and model id minimax-h3. A 5-second 768p clip costs 40 credits.

MCP URL and install command

Paste the URL into Claude connectors or ChatGPT custom MCP. For Claude Code, Codex, and OpenClaw, run the command then sign in.

MCP URL

https://flowaifx.app/mcp
Open the web studio

Add Flow AI Fx

One Streamable HTTP URL. Sign in with Google or email. No fal, Kling, or Google AI Studio keys.

  1. 1. Add a custom MCP connector

    In ChatGPT, add a custom MCP connector / app. URL https://flowaifx.app/mcp. There is no separate ChatGPT-only endpoint.

  2. 2. Sign in

    Complete the browser sign-in with Google or email.

  3. 3. Start a new chat

    Start a new chat so tools/list is loaded, then name the model in your request.

  4. 4. Generate

    Ask ChatGPT to call generate_video and poll check_job. When credits run out, open the returned topup_url.

Generate with MiniMax H3 Max

Connect the MCP, name the model, then poll check_job for the CDN link.

  1. 1

    Add the ChatGPT connector

    Add a custom MCP connector in ChatGPT pointing at https://flowaifx.app/mcp.

  2. 2

    Sign in and start a new chat

    Complete browser sign-in, then start a new chat so the tools load.

  3. 3

    Name MiniMax H3 Max

    Ask for MiniMax H3 Max. Include duration 1–15s, 480p/768p/1080p, and image, video, or audio references.

  4. 4

    Generate and poll

    ChatGPT calls generate_video with minimax-h3 and polls check_job. A 5s 768p job costs 40 credits.

MiniMax H3 Max on Flow AI Fx

Numbers match the live credit table. Failed server-error generations are refunded.

Model id
minimax-h3
MCP tool
generate_video
Duration
1–15s
Resolution
480p, 768p, 1080p
Example cost
5s 768p: 40 credits

Questions

Setup, credits, and model ids for this agent combo.

ChatGPT cannot output MiniMax H3 Max files by itself. Add Flow AI Fx as a custom MCP connector at https://flowaifx.app/mcp, sign in, start a new chat, and ask for MiniMax H3 Max (model id minimax-h3).

More agent setups

Same model on another client, or another model on this client.

Generate MiniMax H3 Max from your agent

Connect https://flowaifx.app/mcp, sign in with Google or email, and call generate_video. ChatGPT, Claude, and Gemini signups start with 50 free credits. Other new accounts start with 10. When credits run out, MCP returns topup_url https://flowaifx.app/pricing?billing=payonce.

Open the web studio