Replicate vs fal.ai: FLUX API costs

For outputs above 1 MP, Replicate’s fixed $0.003/image billing is more predictable than fal.ai’s $0.003 per rounded-up MP; both total $3 for 1,000 images up to 1 MP.

Updated · 3 sources · Methodology

DimensionComparison resultScopeEvidence
Predictable charge above 1 MPReplicate$0.003 / imageReplicate bills $0.003 per schnell image; fal.ai bills $0.003 per rounded-up whole MP.12
Image-size and step controlsfal.ai1–4 stepsfal.ai exposes image-size controls and 1–4 inference steps through its queue API.12
Published observed predictionReplicate0.6 s single exampleReplicate publishes one 0.6 s prediction from 2025; fal.ai publishes a separate <1 s vendor claim from 2026, so this is not a matched latency ranking.32

Performance

ProviderAPI and model IDPublished timing and execution
Replicate1FLUX.1 schnell0.6 s in one published prediction, vendor-reported 20253
fal.ai2FLUX.1 schnell<1 s generation claim, vendor-reported 20262

Prices and request cost

ProviderPrice / image up to 1 MP1,000-image cost
Replicate1$0.003$3
fal.ai2$0.003$3
Cost example: 1,000 images up to 1 MP
Replicate$3
fal.ai$3

Capabilities and serving conditions

DimensionReplicatefal.ai
Serving and capacityOnly the schnell option uses the $0.003 rate, not FLUX1.1 pro; private deployments have different hardware billing.1The billing unit is a megapixel rounded upward for every output; larger images can cost more than $0.003.2

When each option fits

Replicate

  • Replicate runs FLUX.1 schnell through its prediction API and bills generated images, without a dedicated GPU reservation.1

fal.ai

  • FLUX.1 schnell is served by fal.ai through its queue API with image-size and inference-step controls.2

Methodology and sources

Replicate and fal.ai use the same FLUX.1 schnell model, but their published timing evidence has different scopes. The cost example is 1,000 images up to 1 MP; fal.ai rounds each image up to a whole MP. Replicate’s single 2025 prediction is not a latency distribution, and fal.ai’s 2026 sub-second claim is not a matched benchmark. Costs exclude credits and retries; speed and quality are not ranked across these evidence types.

  1. Replicate · FLUX.1 schnell specifications and pricing
  2. fal.ai · FLUX.1 schnell specifications and pricing
  3. Replicate · published FLUX.1 schnell prediction

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