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Flux 2 Pro Text to Image

bfl/flux-2/pro

Flux 2 Pro by BFL - generate stunning images from text prompts with state-of-the-art AI. Supports multiple aspect ratios, styles, and high-resolution output for creative and commercial use.

Use in agentGet API key
Base price
$0.03USD / run
Execution
async
Model type
image
Input fields
4
Production route

Try the model

Playground

Open playground
Input
The prompt to generate an image from.
The format of the generated image. Allowed values: jpeg, png.
The aspect ratio of the generated image. Allowed values: 21:9, 16:9, 3:2, 4:3, 5:4, 1:1, 4:5, 3:4, 2:3, 9:16.
The seed to use for the generation.
OutputExample
  1. cbe48a0e-c121-4d66-9317-759e20e7ded0.pngOpen original

Examples

Select an example to load its inputs and result into the playground.

Model card

Specifications

Pricing

Base price
$0.03 / run

Context & modalities

Input
Schema-defined
Output
image

Capabilities

Chat
Not supported
Vision
Not supported
Reasoning
Not supported
Structured output
Not supported
Function calling
Not supported
Audio input
Not supported

Access

Provider
BFL
Model ID
bfl/flux-2/pro
Execution
async
Base URL
https://api.sandbase.ai
API
Unified Run API
Endpoint
/v1/run

Human preference

Arena

Elo ratings from blind side-by-side votes, compared with other image and video models.

Rankings sourced from Artificial Analysis Arena

Leaderboard
Text to Image
Rank
#44 of 106
Elo
1003 ±10
Gap to #1
−219

Text-to-image arena: people pick the better of two images generated from the same prompt, without seeing the model names.

  1. #39Seedream 5.0 LiteByteDance SeedOn SandBase1017±12
  2. #40Ideogram 4.5 (High)Ideogram1015±15
  3. #41Wan2.6 Text to ImageAlibaba1014±12
  4. #42GPT Image 1 (high)OpenAI1013±12
  5. #43Krea 2 MediumKrea1012±9
  6. #44FLUX.2 [pro]Black Forest LabsThis model1003±10
  7. #45Ideogram 4.0Ideogram1002±10
  8. #46FLUX.2 [dev]Black Forest LabsOn SandBase1000
  9. #47Ming-Image-0.1-DesignInclusionAI999±9
  10. #48P-Image-Ideogram (High)Pruna AI995±14

API README

Flux 2 Pro Text to Image

FLUX.2 [pro], BFL's production tier: high quality at a predictable per-image price. Text to image.

Fields

FieldTypeDefaultNotes
promptstring, required—Text instruction.
output_formatjpeg / pngjpegOutput file format.
aspect_ratio21:9 / 16:9 / 3:2 / 4:3 / 5:4 / 1:1 / 4:5 / 3:4 / 2:3 / 9:1616:9Output shape.
seedintegerrandomFix it to compare prompt changes.

Billing

$0.03 per image.

RequestPrice
One image$0.03

Failed runs are not charged.

Prompting

  • Write subject, setting, composition, style, then light.
  • Quote any text that must appear.

Limits

  • One output image per request.

Also on SandBase

Other FLUX.2 endpoints: bfl/flux-2/max, bfl/flux-2/flex, bfl/flux-2/dev, bfl/flux-2/turbo, bfl/flux-2/pro/edit.

Start building

Send your first request

OpenAI-compatible endpoint with unified authentication and usage tracking.

Production API
Unified Run API endpoint
https://api.sandbase.ai/v1/run
Model ID
bfl/flux-2/pro
# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
  -X POST "https://api.sandbase.ai/v1/run" \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  --data-binary @- <<'SANDBASE_JSON'
{
  "model": "bfl/flux-2/pro",
  "prompt": "An intense close-up of knight's visor reflecting battle, sword raised, flames in background, chiaroscuro helmet shadows, hyper-detailed armor, square medieval, cinematic lighting",
  "aspect_ratio": "16:9",
  "output_format": "jpeg"
}
SANDBASE_JSON
)
run_id=$(printf '%s' "$result" | jq -r .id)
for attempt in $(seq 1 120); do
  status=$(printf '%s' "$result" | jq -r .status)
  case "$status" in completed|failed|timeout) break ;; esac
  sleep 2
  result=$(curl --fail-with-body --silent \
    -H "Authorization: Bearer $SANDBASE_API_KEY" \
    "https://api.sandbase.ai/v1/run/$run_id")
done
status=$(printf '%s' "$result" | jq -r .status)
[ "$status" = completed ] || { echo "Generation ended: $status" >&2; exit 1; }
printf '%s\n' "$result"

Choose your model

Compare models

All image & video models
ModelTypeDefault priceReleased
Flux 2 Pro Text to ImageThis model
BFL		Image$0.03 / runNov 23, 2025
Flux 3 Text to Image
BFL		Image$0.05 / runOct 1, 2026
Flux 3 Edit
BFL		Image$0.05 / runOct 1, 2026
Flux 2 Klein 4B Edit
BFL		Image$0.02 / runJan 15, 2026
Flux 2 Klein 9B Edit
BFL		Image$0.02 / runJan 15, 2026
Flux 2 Klein 9B Text to Image
BFL		Image$0.01 / runJan 15, 2026

Questions

FAQ

How do I call BFL Flux 2 Pro Text to Image through SandBase?

Create a SandBase API key, then send requests with the model ID "bfl/flux-2/pro" to Unified Run API (/v1/run) at https://api.sandbase.ai. The request examples on this page show the exact payload.

Do I need a separate BFL account?

No. One SandBase API key and balance gives you access to BFL Flux 2 Pro Text to Image and the other models in the catalog; you do not need to sign up with BFL separately.