ElevenLabs Flash v2.5 vs 
GPT-4o Audio
ElevenLabs Flash v2.5 is the newer model, released after GPT-4o Audio.
Narrator Storytelling
Red door in an ancient forest, read aloud. Warmth and pacing, no theatrics.
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Which answer wins?
Price and specs
Not enough votes to call it. On the specs, GPT-4o Audio has the edge: bigger model tier, bigger context window, major provider backing.
| Spec | ElevenLabs Flash v2.5 | GPT-4o Audio |
|---|---|---|
| Input price | — | $2.5/M tokens |
| Output price | — | $10/M tokens |
| Context window | — | 128K tokens |
| Free API (OpenRouter) | — | No |
| Released | Jun 2025 | Mar 2025 |
| At 10M a month | not listed | $25.00 |
Input tokens at list price. No caching, no batch discount.
Common questions
What is the difference between ElevenLabs Flash v2.5 and GPT-4o Audio?
ElevenLabs Flash v2.5 is developed by ElevenLabs while GPT-4o Audio is developed by OpenAI. You can compare their actual outputs across 6 challenges on Rival to see how they differ in practice.
Which is better, ElevenLabs Flash v2.5 or GPT-4o Audio?
It depends on your use case. ElevenLabs Flash v2.5 and GPT-4o Audio each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 6 challenges so you can judge which fits your needs best.
How can I compare ElevenLabs Flash v2.5 and GPT-4o Audio on Rival?
This page shows a side-by-side comparison of ElevenLabs Flash v2.5 and GPT-4o Audio across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.