audio model comparison
Sonic 3.6 vs Voxtral Mini TTS 3
Sonic 3.6 and Voxtral Mini TTS 3 are both current audio models, from Cartesia and Mistral AI. Sonic 3.6 lists $0.000065 (Pro plan overage) and Voxtral Mini TTS 3 $0.000013 per character, at different tiers, so the prices are not like for like.
Data verified October 23, 2026 · Dataset 2026-10-23
Side by side
Sonic 3.6 and Voxtral Mini TTS 3, line by line
Prices in effect today, compared at the same tier wherever both list one. The better value in each row is highlighted.
| Fact | Sonic 3.6 | Voxtral Mini TTS 3 |
|---|---|---|
| Price | ||
| Price per character | $0.000065 (Pro plan overage) | $0.000013 |
| Independent benchmarks | ||
| Artificial Analysis Speech Arena | 1286 Elo (#3 of 11) | Not measured |
| Specs | ||
| Provider | Cartesia | Mistral AI |
| Release date | August 27, 2026 | October 20, 2026 |
| Access | API only | API only |
| Context window | Not reported | Not reported |
| Max output | Not reported | Not reported |
| Input | text | text |
| Output | audio | audio |
The two list prices for different tiers, shown in brackets, so neither is marked cheaper.
No independent benchmark has scored both models yet. Each rank counts the current models scored on that benchmark.
Charts
Against every current audio model
Where Sonic 3.6 and Voxtral Mini TTS 3 land among the current models of their task, on every independent benchmark, on price and on context.
Where each stands
Only Sonic 3.6 has a current Artificial Analysis Speech Arena score: #3 of 11. Each bar is the share of current models it beats.
Independent benchmarks
Artificial Analysis Speech Arena
Sonic 3.6:#3of 11
1,286 Elo · ahead of 80%
Voxtral Mini TTS 3: Not scored
Price and context
Price per character
Sonic 3.6:#5of 8
$0.000065 · cheaper than 43%
Voxtral Mini TTS 3:#1of 8
$0.000013 · cheaper than 100%
Cost
What each costs
Example workloads at each provider's listed rates, then every other rate either one lists. The cheaper figure in each row is highlighted.
| Workload or rate | Sonic 3.6 | Voxtral Mini TTS 3 |
|---|---|---|
| Example workloads | ||
| 1M characters | $65 (Pro plan overage) | $13 |
Verdict
When to choose each
Sonic 3.6
Where it leads
No measured lead over Voxtral Mini TTS 3 in this data.
Best for
- Multilingual speech for voice agents
- Indian-language and Hinglish speech
Watch out for
- Credit-based plans only (1 credit per character); the recorded rate is the Pro plan overage of $65 per 1M characters, falling to $38 on the Scale plan
- Cartesia does not state latency figures for this version
Voxtral Mini TTS 3
Where it leads
No measured lead over Sonic 3.6 in this data.
Best for
- Multilingual voice agents and narration
- Branded voices cloned from recorded samples
Watch out for
- Language coverage is unclear: the launch post says 35+ languages and 50+ dialects, while the model page lists nine
- Released as a public preview, and Mistral quality claims are not measured independently here
From benchmark to production
Building on Sonic 3.6 or Voxtral Mini TTS 3?
Public scores rarely hold on your own data. We test both models on your real tasks, then build the agent or pipeline around the one that wins.
FAQ
Sonic 3.6 vs Voxtral Mini TTS 3 FAQ
Which is cheaper, Sonic 3.6 or Voxtral Mini TTS 3?
Sonic 3.6 lists $0.000065 (Pro plan overage) and Voxtral Mini TTS 3 $0.000013 per character, at different tiers, so the prices are not like for like.
Further reading
More on Sonic 3.6 and Voxtral Mini TTS 3
Related comparisons
Production evaluation
Choosing between Sonic 3.6 and Voxtral Mini TTS 3?
Public benchmarks narrow the shortlist. We run both on your own tasks, data and cost limits, then build the routing and review controls to run the winner in production.
- A head-to-head evaluation on your real workload
- Routing between models by cost and difficulty