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FLUX.1 [dev]

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bfl/flux-1-dev · by Black Forest Labs · Flow matching / rectified flow

Pricing — 2 offering(s)

Replicate

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  • $0.03 / image Historical 2026-06-09 → 2026-06-09
    Per-output-image price for the official FLUX.1 [dev] model on Replicate. effective_from is the first-observed…

    Per-output-image price for the official FLUX.1 [dev] model on Replicate. effective_from is the first-observed date (true start unknown).

  • $0.025 / image Current 2026-06-10 → present

Together AI

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  • $0.025 / megapixel Current 2026-06-10 → present
    Together bills FLUX.1 [dev] per output megapixel (default steps); more steps cost more. A different unit from…

    Together bills FLUX.1 [dev] per output megapixel (default steps); more steps cost more. A different unit from Replicate's per-image price.

Showing the active price and any recorded history. Full pricing history is available via the paid API — see API docs.

See how FLUX.1 [dev] fits into a cost-aware routing setup

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Capability profile

How FLUX.1 [dev] rates across core capability dimensions, with the task-level evidence behind each rating.

Prompt adherence Strong
Compositional accuracy Strong

GenEval (automated text-to-image alignment over six compositional task types — single object, two objects, counting, colours, relative position, attribute binding; 0–1 = fraction of checks passed, detector-scored): ~0.66 overall (0.66–0.71 depending on sampling settings) — roughly 1 generation in 3 misses a requested attribute, on par with DALL·E 3. Independent (third-party getimg.ai comparison, 2026-06). Structured score in benchmarks below.

Photorealism Strong
Artistic style range Strong

Extended by a deep open-weight fine-tune ecosystem.

Text rendering Moderate

Good for an open model; below FLUX.1 [pro] and DALL·E 3.

Resolution ceiling Moderate

Up to ~2 megapixels.

Inference speed Moderate

Multi-step; faster than pro, much slower than schnell.

Benchmarks

Benchmark Score Config Source
GenEval ≈0.66 Third-party comparisons report FLUX.1 [dev] GenEval ≈0.66-0.71 depending on sampling settings. independent ↗

Operator guidance

The balanced open FLUX tier: route here when you want FLUX-class quality and open weights without paying for [pro]. Drop to FLUX.1 [schnell] for speed/cost; step up to [pro] for the highest fidelity and text. Note the non-commercial licence on the weights.

Use cases

Provenance notice

  • Open weights for non-commercial use; commercial use requires a separate licence from Black Forest Labs
  • No built-in content-provenance metadata by default

Limitations

Citations