Flux 3 Text to Image
bfl/flux-3/text-to-imageFLUX 3 by Black Forest Labs generates images from a text prompt, with strong prompt adherence and typography at 512px to 4K resolution tiers.
- Base price
- $0.05USD / run
- Execution
- async
- Model type
- image
- Input fields
- 4
Try the model
Playground
Examples
Select an example to load its inputs and result into the playground.
Model card
Specifications
Pricing
- Base price
- $0.05 / 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-3/text-to-image
- Execution
- async
- API
- Unified Run API
- Endpoint
- /v1/run
API README
Flux 3 Text to Image
FLUX 3 is Black Forest Labs' third-generation image model. This endpoint generates images from a text prompt. Choose a resolution tier from 512sq to 4k and an aspect ratio; JPEG or PNG output.
Pricing
| Option | Price |
|---|---|
| Per output megapixel (1 MP = 1024×1024, rounded up, minimum 1 MP) | $0.048 |
| 1k (about 1 MP) | $0.048 |
| 2k (about 4 MP) | about $0.192 |
| 4k (about 16 MP) | about $0.768 |
Start building
Send your first request
OpenAI-compatible endpoint with unified authentication and usage tracking.
# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
-X POST "https://api.sandbase.ai/v1/run" \
-H "Authorization: Bearer $SANDBASE_API_KEY" \
-H "Content-Type: application/json" \
--data-binary @- <<'SANDBASE_JSON'
{
"model": "bfl/flux-3/text-to-image",
"prompt": "A red fox leaping over a stream in a pine forest, low-angle wildlife photograph.",
"resolution": "1k",
"output_format": "jpeg"
}
SANDBASE_JSON
)
run_id=$(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
| Model | Type | Default price | Released |
|---|---|---|---|
Flux 3 Text to ImageThis model BFL | Image | $0.05 / run | Oct 1, 2026 |
BFL | Image | $0.05 / run | Oct 1, 2026 |
BFL | Image | $0.04 / run | May 28, 2026 |
BFL | Image | $0.01 / run | Jan 15, 2026 |
BFL | Image | $0.01 / run | Jan 15, 2026 |
BFL | Image | $0.01 / run | Jan 15, 2026 |
Questions
FAQ
How do I call BFL Flux 3 Text to Image through SandBase?
Create a SandBase API key, then send requests with the model ID "bfl/flux-3/text-to-image" 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 3 Text to Image and the other models in the catalog; you do not need to sign up with BFL separately.

