How does Kling per-second billing work on RunAPI?

Kling charges per second of generated video. The rate depends on output_resolution and whether enable_sound is on. A 5-second 720p clip without sound is the cheapest option; 1080p with sound costs roughly twice as much per second. Check the RunAPI pricing page for exact rates.

Is Kling better than Runway for longer clips?

Kling supports 3 to 15 seconds per clip (and multi-shot sequences up to 3 minutes), while Runway caps at 5 or 10 seconds. For scene-length footage, Kling gives you more flexibility. Runway tends to produce cleaner cinematic framing on shorter clips.

Can I use other Kling versions besides 3.0?

Yes. RunAPI also hosts kling-v2.5-turbo-text-to-video-pro and kling-v2.5-turbo-image-to-video-pro for faster, lower-cost generation at 5 or 10 seconds. Set the model parameter to the version slug you want.

Does Hermes Agent need a separate provider for Kling video?

No. If you already configured the custom:runapi provider in Hermes Agent for chat or image generation, the same base_url and API key work for Kling video endpoints. Just change the request path and model parameter.

What happens if Kling generation fails -- am I still charged?

No. RunAPI only bills for completed generations. If the task fails or times out, the reserved credits are rolled back to your account balance.

How does Hermes Agent manage Kling's multi-shot video generation?

Hermes Agent calls the Kling endpoint with scene descriptions and camera control parameters through the custom:runapi provider. For multi-shot sequences, the agent can chain multiple generation calls and manage continuity between shots.

Can Hermes Agent combine Kling video with audio generation models?

Yes. Hermes Agent can orchestrate Kling for video and then call ElevenLabs or Suno through RunAPI to add voiceover or background music, assembling the complete package in one workflow.

HERMES + KLING

Hermes Agent で Kling を使う。

Kuaishou の Kling 3.0 は、テキストまたは画像から最大 1080p の動画を生成し、ネイティブ音声、マルチショットシーン、3〜15秒の尺に対応します。Hermes Agent は custom:runapi プロバイダを使って RunAPI 経由で呼び出します——チャット用に設定したものと同じキーとベース URL を使用します。

API キーを取得ドキュメントを読む

1つの APIキー · テキスト→動画 + 画像→動画 · 秒単位の課金

Hermes Agent を通じて RunAPI を使い、Kling 3.0 で動画を生成します。

要件：
- Hermes Agent ですでに設定済みの custom:runapi プロバイダを使用する
- POST https://runapi.ai/api/v1/kling/text_to_video を呼び出す
- model を "kling-3.0" に設定する
- RUNAPI_API_KEY 環境変数が認証を提供する
- duration_seconds で尺を制御する（3〜15秒）
- 横向き動画には aspect_ratio を "16:9" に設定する
- ネイティブ音声には enable_sound: true で音声を有効化する
- レスポンスは非同期です——タスクが完了するまでタスクステータスエンドポイントをポーリングし、動画 URL を取得します

curl -X POST https://runapi.ai/api/v1/kling/text_to_video \
  -H "Authorization: Bearer $RUNAPI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "kling-3.0",
    "prompt": "A drone shot pulling back from a mountain lake at sunrise, mist rising off the water, cinematic lighting",
    "duration_seconds": 5,
    "aspect_ratio": "16:9",
    "enable_sound": true,
    "output_resolution": "1080p"
  }'

{
  "task_id": "tsk_abc123",
  "status": "pending",
  "model": "kling-3.0"
}

curlコマンドをコピーしてテスト kling

仕組み

Hermes Agent で Kling を使う3ステップ

Configure RunAPI

Set the RUNAPI_API_KEY environment variable. If you already added RunAPI as a custom:runapi provider in Hermes Agent for chat, the same key and base_url work for video generation — no extra configuration needed.

export RUNAPI_API_KEY=runapi_xxx

Call Kling text_to_video

Send a POST to /api/v1/kling/text_to_video with model set to kling-3.0. Include a prompt, duration_seconds (3–15), aspect_ratio, and optionally enable_sound for native audio. For image-driven generation, use /api/v1/kling/image_to_video with a first_frame_image_url instead.

POST /api/v1/kling/text_to_video

Poll for the result

The endpoint returns a task_id immediately. Poll the task status endpoint until the status changes to completed, then retrieve the video URL from the response. Generation typically takes 30–120 seconds depending on duration and resolution.

GET /api/v1/kling/text_to_video/tsk_abc123

パラメータ

Kling text_to_video API パラメータ

パラメータ	型	説明
`model`	`string`	Required. kling-3.0 for the latest version.
`prompt`	`string`	Video description. Required unless multi_shots is enabled.
`duration_seconds`	`integer`	Video length. Kling 3.0 supports 3–15 seconds. Older versions accept 5 or 10.
`aspect_ratio`	`string`	Output aspect ratio: 16:9, 9:16, or 1:1.
`output_resolution`	`string`	Resolution: 720p, 1080p, or 4k. Higher resolution costs more per second.
`enable_sound`	`boolean`	Generate native audio alongside video. Increases per-second cost.
`negative_prompt`	`string`	Elements to exclude from generation.
`first_frame_image_url`	`string`	Image URL to use as the opening frame (single-shot mode).
`cfg_scale`	`number`	Guidance scale (0–1). Higher values follow the prompt more closely.
`multi_shots`	`boolean`	Enable multi-shot scene generation with separate prompts per segment.

Hermes AgentのKlingとは？

KuaishouのKling 3.0はキャラクターの一貫性と優れたモーション物理——布のドレープ・流体力学・リアルなカメラムーブメント——で映画品質のクリップを生成します。Hermes Agentのcustom:runapi providerを通じて、最大1080p・ネイティブ音声でテキスト→動画・画像→動画が可能で、1回の生成で3〜15秒（マルチショットモードで最長3分）のクリップを生成します。