FLUX.2 [dev] - Oxen.ai

Try FLUX.2 [dev] in the Workbench

Run this model interactively, tune parameters, and compare outputs.

Model ID: flux-2-dev FLUX.2 [dev] is a 32-billion parameter image generation model that excels in generating highly detailed, photorealistic images and performing precise image editing, including multi-reference editing with strong consistency across subjects, products, and styles. It is best at rendering complex typography, infographics, and UI mockups with legible fine text, and supports flexible input/output ratios up to 4 megapixels. Some other noteworthy features of FLUX.2 [dev] include native support for LoRA fine-tuning workflows, making it suitable for rapid prototyping and custom training, and efficient resource usage for high-volume generation tasks.

Metric	Value
Parameter Count	32 billion
Mixture of Experts	No
Context Length	Unknown
Multilingual	Yes
Quantized*	No

*Quantization is specific to the inference provider and the model may be offered with different quantization levels by other providers.

Example request

Use the Workbench as a request builder: configure parameters for this model in the UI, then open the API tab to copy the exact cURL or Python call.

Sync
Async
Async with SSE

See the image editing reference for more details.

Minimal
All parameters

curl -X POST https://hub.oxen.ai/api/ai/images/edit \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $OXEN_API_KEY" \
  -d '{
  "model": "flux-2-dev",
  "prompt": "Bloxy, the cartoon ox in the reference image, as a superhero. The overall style should be kept the same as the reference image. Bloxy should be wearing a blue suit with whitish-grey sleeves and leggings. On Bloxy'\''s shoulders rest a yellow shoulder mantle and yellow capelet with a collar clasp. A red jewel lies in the center of the collar clasp.",
  "input_image": [
    "https://hub.oxen.ai/api/repos/elau/assets/file/main/bloxy/bloxy_cropped_1024x1024.png"
  ]
}'

curl -X POST https://hub.oxen.ai/api/ai/images/edit \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $OXEN_API_KEY" \
  -d '{
  "model": "flux-2-dev",
  "prompt": "Bloxy, the cartoon ox in the reference image, as a superhero. The overall style should be kept the same as the reference image. Bloxy should be wearing a blue suit with whitish-grey sleeves and leggings. On Bloxy'\''s shoulders rest a yellow shoulder mantle and yellow capelet with a collar clasp. A red jewel lies in the center of the collar clasp.",
  "input_image": [
    "https://hub.oxen.ai/api/repos/elau/assets/file/main/bloxy/bloxy_cropped_1024x1024.png"
  ],
  "aspect_ratio": "1:1",
  "resolution": "1 MP",
  "num_inference_steps": 30,
  "guidance": 2,
  "output_format": "webp",
  "output_quality": 80,
  "disable_safety_checker": false
}'

See the async queue reference for more details.

Minimal
All parameters

# Enqueue, capture the generation id.
GEN_ID=$(curl -s -X POST https://hub.oxen.ai/api/ai/queue \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $OXEN_API_KEY" \
  -d '{
  "model": "flux-2-dev",
  "prompt": "Bloxy, the cartoon ox in the reference image, as a superhero. The overall style should be kept the same as the reference image. Bloxy should be wearing a blue suit with whitish-grey sleeves and leggings. On Bloxy'\''s shoulders rest a yellow shoulder mantle and yellow capelet with a collar clasp. A red jewel lies in the center of the collar clasp.",
  "input_image": [
    "https://hub.oxen.ai/api/repos/elau/assets/file/main/bloxy/bloxy_cropped_1024x1024.png"
  ]
}' | jq -r '.generations[0].generation_id')

# Poll the single generation until it 404s (terminal state).
while curl -s -o /dev/null -w "%{http_code}" \
    -H "Authorization: Bearer $OXEN_API_KEY" \
    "https://hub.oxen.ai/api/ai/queue/$GEN_ID" | grep -q "^200$"; do
  sleep 5
done
echo "Done. See the 'Async with SSE' tab to receive the result URL."

# Enqueue, capture the generation id.
GEN_ID=$(curl -s -X POST https://hub.oxen.ai/api/ai/queue \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $OXEN_API_KEY" \
  -d '{
  "model": "flux-2-dev",
  "prompt": "Bloxy, the cartoon ox in the reference image, as a superhero. The overall style should be kept the same as the reference image. Bloxy should be wearing a blue suit with whitish-grey sleeves and leggings. On Bloxy'\''s shoulders rest a yellow shoulder mantle and yellow capelet with a collar clasp. A red jewel lies in the center of the collar clasp.",
  "input_image": [
    "https://hub.oxen.ai/api/repos/elau/assets/file/main/bloxy/bloxy_cropped_1024x1024.png"
  ],
  "aspect_ratio": "1:1",
  "resolution": "1 MP",
  "num_inference_steps": 30,
  "guidance": 2,
  "output_format": "webp",
  "output_quality": 80,
  "disable_safety_checker": false
}' | jq -r '.generations[0].generation_id')

# Poll the single generation until it 404s (terminal state).
while curl -s -o /dev/null -w "%{http_code}" \
    -H "Authorization: Bearer $OXEN_API_KEY" \
    "https://hub.oxen.ai/api/ai/queue/$GEN_ID" | grep -q "^200$"; do
  sleep 5
done
echo "Done. See the 'Async with SSE' tab to receive the result URL."

See the async queue reference for more details.

Minimal
All parameters

# Enqueue, capture the generation id.
GEN_ID=$(curl -s -X POST https://hub.oxen.ai/api/ai/queue \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $OXEN_API_KEY" \
  -d '{
  "model": "flux-2-dev",
  "prompt": "Bloxy, the cartoon ox in the reference image, as a superhero. The overall style should be kept the same as the reference image. Bloxy should be wearing a blue suit with whitish-grey sleeves and leggings. On Bloxy'\''s shoulders rest a yellow shoulder mantle and yellow capelet with a collar clasp. A red jewel lies in the center of the collar clasp.",
  "input_image": [
    "https://hub.oxen.ai/api/repos/elau/assets/file/main/bloxy/bloxy_cropped_1024x1024.png"
  ]
}' | jq -r '.generations[0].generation_id')

# Stream the SSE channel, grab the data line that follows a
# media_generation_completed event for our id, and pretty-print it.
curl -sN -H "Authorization: Bearer $OXEN_API_KEY" https://hub.oxen.ai/api/events \
  | awk -v id="$GEN_ID" '
    /^event: media_generation_completed$/ { expect=1; next }
    /^data: / && expect {
      payload = substr($0, 7)
      if (index(payload, "\"generation_id\":\"" id "\"")) { print payload; exit }
      expect = 0
    }
  ' | jq .

# Enqueue, capture the generation id.
GEN_ID=$(curl -s -X POST https://hub.oxen.ai/api/ai/queue \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $OXEN_API_KEY" \
  -d '{
  "model": "flux-2-dev",
  "prompt": "Bloxy, the cartoon ox in the reference image, as a superhero. The overall style should be kept the same as the reference image. Bloxy should be wearing a blue suit with whitish-grey sleeves and leggings. On Bloxy'\''s shoulders rest a yellow shoulder mantle and yellow capelet with a collar clasp. A red jewel lies in the center of the collar clasp.",
  "input_image": [
    "https://hub.oxen.ai/api/repos/elau/assets/file/main/bloxy/bloxy_cropped_1024x1024.png"
  ],
  "aspect_ratio": "1:1",
  "resolution": "1 MP",
  "num_inference_steps": 30,
  "guidance": 2,
  "output_format": "webp",
  "output_quality": 80,
  "disable_safety_checker": false
}' | jq -r '.generations[0].generation_id')

# Stream the SSE channel, grab the data line that follows a
# media_generation_completed event for our id, and pretty-print it.
curl -sN -H "Authorization: Bearer $OXEN_API_KEY" https://hub.oxen.ai/api/events \
  | awk -v id="$GEN_ID" '
    /^event: media_generation_completed$/ { expect=1; next }
    /^data: / && expect {
      payload = substr($0, 7)
      if (index(payload, "\"generation_id\":\"" id "\"")) { print payload; exit }
      expect = 0
    }
  ' | jq .

Fetch model details

The models endpoint returns the full model object, including its json_request_schema.

curl -H "Authorization: Bearer $OXEN_API_KEY" https://hub.oxen.ai/api/ai/models/flux-2-dev

Request parameters

Required parameters

Field	Type	Default	Description
`prompt`	`string`	`"Bloxy, the cartoon ox in the reference image, as a superhero. The overall style should be kept the same as the reference image. Bloxy should be wearing a blue suit with whitish-grey sleeves and leggings. On Bloxy's shoulders rest a yellow shoulder mantle and yellow capelet with a collar clasp. A red jewel lies in the center of the collar clasp."`	Prompt for generated image
`input_image`	`array<string>`	`["https://hub.oxen.ai/api/repos/elau/assets/file/main/bloxy/bloxy_cropped_1024x1024.png"]`	Input images to transform or use as reference (supports multiple image urls)

Optional parameters

Field	Type	Default	Description
`aspect_ratio`	`string`	`"1:1"`	Aspect ratio for the generated image One of: 1:1, 16:9, 9:16, 4:3, 3:4, 3:2, 2:3, match_input_image.
`resolution`	`string`	`"1 MP"`	Resolution for the generated image One of: 1 MP, 2 MP, 0.5 MP.
`num_inference_steps`	`integer`	`30`	Number of denoising steps. Recommended range is 28-50, and lower number of steps produce lower quality outputs, faster. Range: 1 – 50.
`guidance`	`number`	`2`	Guidance for generated image. Lower values can give more realistic images. Good values to try are 2, 2.5, 3 and 3.5 Range: 0 – 10.
`seed`	`integer`	—	Random seed. Set for reproducible generation
`output_format`	`string`	`"webp"`	Format of the output images One of: webp, jpg, png.
`output_quality`	`integer`	`80`	Quality when saving the output images, from 0 to 100. 100 is best quality, 0 is lowest quality. Not relevant for .png outputs Range: 0 – 100.
`disable_safety_checker`	`boolean`	`false`	Disable safety checker for generated images.

Inference API

Try FLUX.2 [dev] in the Workbench

​Example request

​Fetch model details

​Request parameters

​Required parameters

​Optional parameters

Example request

Fetch model details

Request parameters

Required parameters

Optional parameters