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HiDream I1 Fast

hidream-ai/hidream-i1/fast

Hidream I1 Fast is hidream-ai's advanced text-to-image AI model. Create photorealistic images, illustrations, and concept art from natural language descriptions with exceptional detail and prompt adherence.

Use in agentGet API key
Base price
$0.01 / run
Execution
async
Model type
image
Input fields
4

Try the model

Playground

Open playground
Input
The prompt to generate an image from.
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.
Random seed for reproducible generation.
The format of the generated image. Allowed values: jpeg, png.
OutputReady

Your output will appear here

Complete the inputs, then click Run.

Specifications

Pricing

Base price
$0.01 / 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
HiDream
Model ID
hidream-ai/hidream-i1/fast
Execution
async
API
Unified Run API
Endpoint
/v1/run

API README

HiDream I1 Fast

hidream-ai/hidream-i1/fast creates high-quality still imagery from detailed written art direction, resolving subject, composition, lighting, materials, and style. HiDream-I1 Fast compresses the generation process for rapid image exploration while retaining the family's broad prompt understanding and visual range. This combination makes the model a practical choice when the creative outcome depends on those qualities rather than on a generic media conversion.

For production work with hidream-ai/hidream-i1/fast, the Fast tier is best for concept comparison, creative variants, and high-throughput drafts where turnaround matters more than the last increment of fine detail. The result is most reliable when the source material and creative brief clearly describe the intended subject, progression, visual or sonic character, and the qualities that must remain unchanged.

Highlights

Detailed text-to-image synthesis resolves complex scenes, materials, lighting, and visual relationships.

Strong prompt adherence follows subjects, attributes, spatial composition, and stylistic direction.

Style versatility spans photorealism, illustration, graphic design, and conceptual artwork.

Fast generation accelerates prompt iteration and high-volume visual exploration.

Pricing

Billing unitPrice
Per request$0.01

When to Use

✅ Good fit❌ Consider alternatives
The model's named workflow matches the source material and intended outputA different input modality or model route is required
A managed asynchronous result is suitable for the production pipelineA synchronous, interactive editor is essential
The documented controls cover the required duration, framing, or formatThe project needs controls outside this endpoint's schema
Creative iteration benefits from a repeatable request structureExact deterministic pixels, frames, geometry, or samples are mandatory
A finished downloadable media asset is the desired deliverableEditable source layers or a native project file are required

Prompt Guide

For generation, state the intended result first, then add the subject or source treatment, progression, style, and delivery constraints. Keep one creative variable per phrase, use the documented field names for controls, and change one setting at a time when comparing results.

{
  "aspect_ratio": "16:9",
  "output_format": "jpeg",
  "prompt": "a cat holding a skateboard which has 'fal' written on it in red spray paint"
}

Technical Specs

SpecValue
Model IDhidream-ai/hidream-i1/fast
Inputsaspect_ratio, output_format, prompt, seed
Required inputsprompt
Output fieldscontent_type, url
ExecutionAsync (submit, then poll for result)
Aspect Ratio21:9 / 16:9 / 3:2 / 4:3 / 5:4 / 1:1 / 4:5 / 3:4 / 2:3 / 9:16
Output Formatjpeg / png

Related Models

Start building

Send your first request

OpenAI-compatible endpoint with unified authentication and usage tracking.

Production API
Endpoint
https://api.sandbase.ai/v1/run
Model ID
hidream-ai/hidream-i1/fast
# Preserve Unicode and shell metacharacters in the request body.
result=$(printf '%s' 'ewogICJtb2RlbCI6ICJoaWRyZWFtLWFpL2hpZHJlYW0taTEvZmFzdCIsCiAgInByb21wdCI6ICJhIGNhdCBob2xkaW5nIGEgc2thdGVib2FyZCB3aGljaCBoYXMgJ2ZhbCcgd3JpdHRlbiBvbiBpdCBpbiByZWQgc3ByYXkgcGFpbnQiLAogICJhc3BlY3RfcmF0aW8iOiAiMTY6OSIsCiAgIm91dHB1dF9mb3JtYXQiOiAianBlZyIKfQ==' \
  | base64 --decode \
  | curl --fail-with-body --silent \
      -X POST "https://api.sandbase.ai/v1/run" \
      -H "Authorization: Bearer $SANDBASE_API_KEY" \
      -H "Content-Type: application/json" \
      --data-binary @-)
run_id=$(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"

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