ComfyUI Node
arkennemasis fal · Chatterbox Speech to Speech · $0.015/min
Whether you're working on memes, videos, games, or AI agents, Chatterbox brings your content to life. Use the first tts from resemble ai. Pricing (from fal, 2026-09-29): $0.015 per minute (fal's billing unit). Model page: https://fal.ai/models/fal-ai/chatterbox/speech-to-speech Key: FAL_KEY in the .env next to run_nvidia_gpu.bat. Results are saved in output/fal/fal-ai_chatterbox_speech-to-speech/.
arkennemasis fal · Chatterbox Speech to Speech · $0.015/min
- source_audio
- target_voice_audio
- audio
- audio_path
- info
◄max_cost_usd20.0►
◄reuse_identical_runtrue►
◄extra_json►
◄max_concurrent1►
Categoryarkennemasis/fal/Audio/Chatterbox
Inputs (6)
| Name | Type | Default | Description |
|---|---|---|---|
| source_audio | AUDIO | — | |
| target_voice_audioopt | AUDIO | Required URL to an audio file to use as the target reference voice for speech-to-speech voice conversion. | |
| max_cost_usdopt | FLOAT | 20.00–100000 | Safety cap. If the estimated cost of this run is above this many US dollars the node stops BEFORE sending anything to fal. 0 = no cap. |
| reuse_identical_runopt | BOOLEAN | true | If these exact inputs (the settings AND the same pictures/clips/audio) were already paid for and the files are still in output/fal, return them instead of paying again - also after a ComfyUI restart. Turn off for a fresh take with the same settings. |
| extra_jsonopt | STRING | Advanced: a JSON object merged into the request last, for any fal field this node has no box for. Example: {"seed": 7}. Leave empty normally. | |
| max_concurrentopt | INT | 11–32 | How many paid fal calls may run at the same time in one run, across every fal node. 1 (default) = one after another. This node starts its paid part only while fewer than this many fal calls are running. Once any fal node fails, the ones still waiting are not started, so nothing more is billed. |
Outputs (3)
| Name | Type | Description |
|---|---|---|
| audio | AUDIO | — |
| audio_path | STRING | — |
| info | STRING | JSON: request id, cost estimate, saved files and fal's full answer. |