## Start a generation run

`client.Runs.StartGeneration(ctx, body) (*RunStartGenerationResponse, error)`

**post** `/runs/generation`

Starts a model generation run in a project canvas using a prompt, workspace, project, optional model, and optional model parameters. Mutating public API requests support an optional Idempotency-Key header for client retries; duplicate keys within two hours return idempotency_duplicate.

### Parameters

- `body RunStartGenerationParams`

  - `ProjectID param.Field[string]`

    Project identifier

  - `Prompt param.Field[string]`

    Generation prompt

  - `Type param.Field[RunStartGenerationParamsType]`

    Generation type

    - `const RunStartGenerationParamsTypeImage RunStartGenerationParamsType = "image"`

    - `const RunStartGenerationParamsTypeVideo RunStartGenerationParamsType = "video"`

    - `const RunStartGenerationParamsTypeAudio RunStartGenerationParamsType = "audio"`

    - `const RunStartGenerationParamsTypeText RunStartGenerationParamsType = "text"`

  - `WorkspaceID param.Field[string]`

    Workspace identifier

  - `Model param.Field[string]`

    Model endpoint ID

  - `Params param.Field[map[string, any]]`

    Model parameters

### Returns

- `type RunStartGenerationResponse struct{…}`

  - `ChargedCost float64`

  - `EstimatedSeconds int64`

  - `RunID string`

    Run identifier

  - `Type RunStartGenerationResponseType`

    Run type

    - `const RunStartGenerationResponseTypeGeneration RunStartGenerationResponseType = "generation"`

    - `const RunStartGenerationResponseTypeTechnique RunStartGenerationResponseType = "technique"`

    - `const RunStartGenerationResponseTypeAction RunStartGenerationResponseType = "action"`

  - `Action RunStartGenerationResponseAction`

    - `ActionID string`

      Action identifier

      - `const RunStartGenerationResponseActionActionIDSplitText RunStartGenerationResponseActionActionID = "split-text"`

      - `const RunStartGenerationResponseActionActionIDFindAndReplaceText RunStartGenerationResponseActionActionID = "find-and-replace-text"`

      - `const RunStartGenerationResponseActionActionIDConcatText RunStartGenerationResponseActionActionID = "concat-text"`

      - `const RunStartGenerationResponseActionActionIDKenBurnsVideo RunStartGenerationResponseActionActionID = "ken-burns-video"`

      - `const RunStartGenerationResponseActionActionIDColorGradeImage RunStartGenerationResponseActionActionID = "color-grade-image"`

      - `const RunStartGenerationResponseActionActionIDChangeImageAr RunStartGenerationResponseActionActionID = "change-image-ar"`

      - `const RunStartGenerationResponseActionActionIDRotateImage RunStartGenerationResponseActionActionID = "rotate-image"`

      - `const RunStartGenerationResponseActionActionIDFlipImage RunStartGenerationResponseActionActionID = "flip-image"`

      - `const RunStartGenerationResponseActionActionIDColorFilterImage RunStartGenerationResponseActionActionID = "color-filter-image"`

      - `const RunStartGenerationResponseActionActionIDColorTintImage RunStartGenerationResponseActionActionID = "color-tint-image"`

      - `const RunStartGenerationResponseActionActionIDFilterColorImage RunStartGenerationResponseActionActionID = "filter-color-image"`

      - `const RunStartGenerationResponseActionActionIDBlurImage RunStartGenerationResponseActionActionID = "blur-image"`

      - `const RunStartGenerationResponseActionActionIDDuplicateImage RunStartGenerationResponseActionActionID = "duplicate-image"`

      - `const RunStartGenerationResponseActionActionIDSideBySideComposite RunStartGenerationResponseActionActionID = "side-by-side-composite"`

      - `const RunStartGenerationResponseActionActionIDAddShapeToImage RunStartGenerationResponseActionActionID = "add-shape-to-image"`

      - `const RunStartGenerationResponseActionActionIDGenerateShapeImage RunStartGenerationResponseActionActionID = "generate-shape-image"`

      - `const RunStartGenerationResponseActionActionIDAddTextToImage RunStartGenerationResponseActionActionID = "add-text-to-image"`

      - `const RunStartGenerationResponseActionActionIDGenerateTextImage RunStartGenerationResponseActionActionID = "generate-text-image"`

      - `const RunStartGenerationResponseActionActionIDQrCodeGenerator RunStartGenerationResponseActionActionID = "qr-code-generator"`

      - `const RunStartGenerationResponseActionActionIDStitchVideos RunStartGenerationResponseActionActionID = "stitch-videos"`

      - `const RunStartGenerationResponseActionActionIDSplitVideo RunStartGenerationResponseActionActionID = "split-video"`

      - `const RunStartGenerationResponseActionActionIDExtractVideoFrames RunStartGenerationResponseActionActionID = "extract-video-frames"`

      - `const RunStartGenerationResponseActionActionIDColorGradeVideo RunStartGenerationResponseActionActionID = "color-grade-video"`

      - `const RunStartGenerationResponseActionActionIDVideoToFrameGrid RunStartGenerationResponseActionActionID = "video-to-frame-grid"`

      - `const RunStartGenerationResponseActionActionIDBoomerangVideo RunStartGenerationResponseActionActionID = "boomerang-video"`

      - `const RunStartGenerationResponseActionActionIDReverseVideo RunStartGenerationResponseActionActionID = "reverse-video"`

      - `const RunStartGenerationResponseActionActionIDVideoToLongExposure RunStartGenerationResponseActionActionID = "video-to-long-exposure"`

      - `const RunStartGenerationResponseActionActionIDVideoEffect RunStartGenerationResponseActionActionID = "video-effect"`

      - `const RunStartGenerationResponseActionActionIDColorFilterVideo RunStartGenerationResponseActionActionID = "color-filter-video"`

      - `const RunStartGenerationResponseActionActionIDSpeedUpVideo RunStartGenerationResponseActionActionID = "speed-up-video"`

      - `const RunStartGenerationResponseActionActionIDSlowDownVideo RunStartGenerationResponseActionActionID = "slow-down-video"`

      - `const RunStartGenerationResponseActionActionIDDuplicateVideo RunStartGenerationResponseActionActionID = "duplicate-video"`

      - `const RunStartGenerationResponseActionActionIDGreenscreenVideo RunStartGenerationResponseActionActionID = "greenscreen-video"`

      - `const RunStartGenerationResponseActionActionIDResizeVideo RunStartGenerationResponseActionActionID = "resize-video"`

      - `const RunStartGenerationResponseActionActionIDChangeVideoAr RunStartGenerationResponseActionActionID = "change-video-ar"`

      - `const RunStartGenerationResponseActionActionIDSplitAudioFromVideo RunStartGenerationResponseActionActionID = "split-audio-from-video"`

      - `const RunStartGenerationResponseActionActionIDMergeAudioIntoVideo RunStartGenerationResponseActionActionID = "merge-audio-into-video"`

  - `Model RunStartGenerationResponseModel`

    - `ModelID string`

      Model identifier

  - `PollURL string`

  - `ProjectID string`

    Project identifier

  - `Technique RunStartGenerationResponseTechnique`

    - `Name string`

      Technique name

    - `TechniqueID string`

      Technique identifier

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/florafauna-ai/flora-go"
  "github.com/florafauna-ai/flora-go/option"
)

func main() {
  client := flora.NewClient(
    option.WithAPIKey("My API Key"),
  )
  response, err := client.Runs.StartGeneration(context.TODO(), flora.RunStartGenerationParams{
    ProjectID: "prj_abc123",
    Prompt: "A cinematic product photo of a ceramic mug on a sunlit table",
    Type: flora.RunStartGenerationParamsTypeImage,
    WorkspaceID: "ws_abc123",
  })
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", response.RunID)
}
```

#### Response

```json
{
  "charged_cost": 0,
  "estimated_seconds": 0,
  "run_id": "run_abc123",
  "type": "generation",
  "action": {
    "action_id": "split-text"
  },
  "model": {
    "model_id": "t2i-flux-2-pro"
  },
  "poll_url": "https://example.com",
  "project_id": "prj_abc123",
  "technique": {
    "name": "name",
    "technique_id": "tech_abcd1234"
  }
}
```