Fast AI text-to-speech

ElevenLabs Flash v2.5

Prompt: Audio waveform on a screen in a modern control room

Flash v2.5 trades a little expressiveness for speed and throughput, so you can iterate on long scripts without slowing down.

Generate speechExplore outputs
Inputs
  • Text prompt
  • Voice selection
  • Language hint
  • Voice cloning
Settings
  • Voice
  • Output format
  • Voice speed
  • Voice stability
Outputs
  • Audio output
  • Voice metadata
  • Long-form synthesisUp to 40,000 characters per request
Strengths

Fast passes for long scripts

Use Flash v2.5 when iteration speed matters more than the last 10% of polish, or when the script is long.

Fast throughput

Lower latency per request so you can iterate on voice and line reads quickly.

Long-form friendly

Higher character limit makes it suitable for chapters, explainers, and long voiceovers.

Same voice catalog

Reuse the same synced voices you use with Eleven v3 and Multilingual v2.

Workflow

Draft fast, polish later

Use Flash to settle the line, pacing, and voice choice, then re-run the final pass on Eleven v3 if you need more nuance.

  1. 1

    Cut the script into passes

    Break long scripts into scenes or sections so each pass is easy to regenerate.

  2. 2

    Fix the voice and settings

    Lock the voice and stability once the read feels right, then run the full script.

  3. 3

    Upgrade the final take

    Re-run the final delivery on Eleven v3 if the scene needs more emotion.

Details

Technical notes

Use these notes as production guidance inside Creativ Studio. Provider availability and exact limits can vary by account, region, and model rollout.

Best for

Fast iteration and long-form voiceover

Inputs

Text and a voice selection

Prompt limit

40,000 characters per request

Output formats

mp3, wav, opus, pcm

Prompt recipes

Use these as starting shapes, then swap in your own subject, references, and constraints.

Explainer draft

Today we'll walk through three things every new user should know before their first generation.

Chapter read

Chapter one. The morning began the way most mornings did, with a cold room and a quiet decision to start anyway.

Questions

Why is Flash cheaper and faster?

It uses a lighter model tuned for throughput. It trades a small amount of expressiveness for speed.

Can I use the same voices as Eleven v3?

Yes. Voices in the picker are shared across ElevenLabs TTS models.

When should I not use Flash?

Switch to Eleven v3 when the line needs emotion, subtle pacing, or a specific character feel.