GPT-4o Audio is the newer model, released after ElevenLabs Multilingual v2.
| Spec | ElevenLabs Multilingual v2 | GPT-4o Audio |
|---|---|---|
| Input price | — | $2.5/M tokens |
| Output price | — | $10/M tokens |
| Context window | — | 128K tokens |
| Free API (OpenRouter) | — | No |
| Released | Mar 2024 | Mar 2025 |
Not enough votes to call it. On the specs, GPT-4o Audio has the edge: newer, bigger context window, major provider backing.