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Frequently Asked Questions

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General

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What is ModelBeam?

ModelBeam is a unified AI inference API that provides access to open-source AI models for image generation, video generation, audio synthesis, transcription, OCR, embeddings, and more. One API, many capabilities.

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Do I need to manage any infrastructure?

No. ModelBeam handles all GPU provisioning, model loading, and scaling. You send API requests and receive results.

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What models are available?

ModelBeam offers models for text-to-image (FLUX.1 Schnell, FLUX.2 Klein, Z-Image-Turbo), text-to-video (LTX Video), text-to-speech (Kokoro, Qwen3 TTS, Chatterbox), music generation (ACE-Step), transcription (Whisper Large V3), OCR (Nanonets), embeddings (BGE M3), and more. Use the models endpoint for the full list.

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Pricing & Billing

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How much does it cost?

ModelBeam uses pay-per-use pricing with no subscriptions. New accounts receive $5 in free credits. See the pricing page for details.

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How do I add credits?

Go to modelbeam.ai/dashboard and add credits via your preferred payment method.

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Can I check the price before running a job?

Yes. Every endpoint has a /price-calculation variant that accepts the same parameters and returns the exact cost without executing the job.

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API

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How do I authenticate?

Include your API key as a Bearer token in the Authorization header. Get keys at modelbeam.ai/dashboard/api-keys.

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How do I get results?

ModelBeam supports three result delivery methods:
  1. Polling — Call GET /api/v1/client/request-status/{request_id} until status is done
  2. Webhooks — Provide a webhook_url parameter to receive HTTP callbacks
  3. WebSockets — Connect to the real-time WebSocket server for status updates

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What are the rate limits?

Basic tier (free): 1-10 RPM depending on endpoint, with daily limits. Premium tier (any payment): 300 RPM, unlimited daily. See limits and quotas.

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What file formats are supported?

  • Images: JPG, JPEG, PNG, GIF, BMP, WebP (max 10MB)
  • Audio: AAC, MP3, OGG, WAV, WebM, FLAC (max 10MB, 20MB for aud2video)
  • Video: MP4, MPEG, QuickTime, AVI, WMV, OGG (max 10MB)

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Support

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Where can I get help?