Models

GET /v1/models returns the live catalog with prices and option lists. The table below is rendered from the same source, so it is always current.

Model references

auto · 1:1 · 2:3

Nano Banana 2.1

nano-banana-2-1

Google's newest Nano Banana: 1K / 2K / 4K output, up to 14 references and extreme aspect ratios.

from 12 credits / image1K–4K14 references60–90s

Nano Banana 2

nano-banana-2

Multi-subject consistency and 1K / 2K / 4K output with extreme aspect ratios.

from 10 credits / image1K–4K14 references10–20s

Nano Banana Pro

nano-banana-pro

Native 2K with 4K output, precise typography and composition control.

from 14 credits / image1K–4K14 references10–20s

Nano Banana

nano-banana

Fast text-to-image and image editing with strong character consistency.

6 credits / image1K14 references10–15s

Nano Banana 2 Lite

nano-banana-2-lite

Budget Nano Banana 2 at 1K.

6 credits / image1K14 references8–15s

GPT Image 2.5

gpt-image-2-5

OpenAI's latest image model: sharp text and precise edits at 1K, 2K or 4K, in Flare or Sunburst.

from 12 credits / image1K–4K16 references30–60s

GPT Image 2

gpt-image-2

OpenAI text-to-image and image editing with reliable prompt following.

12 credits / image1K15 references15–30s

Seedream 5.0 Lite

seedream-5

Text-to-image and reference-image editing with 2K, 3K and 4K output.

6 credits / image2K–4K14 references

Seedance 2.0

seedance-2

Text-to-video, first-frame animation and first/last-frame transitions, with optional generated audio.

from 32 credits / second480p–720p4–15s2 frame images

Seedance 2.0 Fast

seedance-2-fast

Text-to-video, first-frame animation and first/last-frame transitions, with optional generated audio.

from 27 credits / second480p–720p4–15s2 frame images

Seedance 2.0 Mini

seedance-2-mini

Text-to-video, first-frame animation and first/last-frame transitions, with optional generated audio.

from 16 credits / second480p–720p4–15s2 frame images

Veo 3.1

veo-3-1

Veo 3.1 Fast and Quality with native audio, text, frame and Fast reference-image generation.

from 200 credits / video720p4–8s3 frame images

Model previews are AI-created concept artwork inspired by each model name, not sample outputs from the listed models.

Prices are credits per generated image and match the web generator. Resolution-priced models default to the cheapest tier when resolution is omitted.

curl https://flux1.ai/api/v1/models -H "Authorization: Bearer $FLUX1_API_KEY"

{
  "data": [
    {
      "id": "nano-banana-2",
      "label": "Nano Banana 2",
      "media_type": "image",
      "parameters": ["prompt", "images", "aspect_ratio", "resolution"],
      "pricing": { "type": "resolution", "credits": { "1K": 10, "2K": 14, "4K": 21 } },
      "constraints": { "aspect_ratios": ["auto", "1:1", …], "resolutions": ["1K", "2K", "4K"], "max_images": 14 },
      "estimated_seconds": [10, 20]
    },
    …
  ]
}

Reading a model entry

• parameters lists the main request fields. parameter_details describes every accepted field with its type, default, allowed values and limits. example_input provides a starting point; spread it alongside model in the request body.
• Seedream 5.0 Lite rejects unknown fields. Its output size is controlled by quality, not resolution. Nano Banana and GPT Image models ignore unknown fields.
• GPT Image 2 is sold at the 1K tier only, so it takes no resolution. GPT Image 2.5 adds version: flare (faster) or sunburst (more precise edits), both at the same price.
• pricing.type is fixed (one price) or resolution (a price per resolution value).
• constraints carries allowed aspect_ratios, resolutions or qualities, output_formats and max_images as applicable. Invalid options are rejected with 400 invalid_request before any credits are charged. max_images limits reference images; one output is generated per request.
• estimated_seconds is a typical range, not a guarantee; null means no measured range is published yet. Poll rather than sleep for a fixed time.

Seedance 2.0, Fast, Mini and Veo 3.1 appear with media_type: "video". Seedance pricing is per second at the selected resolution; Veo pricing is per generation at the selected Fast/Quality mode. See the model pages for exact supported durations and parameters.