Current model · AssemblyAI
AssemblyAI-TTS-1 benchmarks, pricing and specs
AssemblyAI-TTS-1 is an AssemblyAI model released on October 28, 2026 that takes text input and produces audio. It costs $0.000015 per character. It scores 1221 Elo on Artificial Analysis Speech Arena, #6 of 13 current models (Artificial Analysis, measured November 3, 2026).
- Per character
- $0.000015Listed today
- Artificial Analysis Speech Arena
- 1221 Elo#6 of 13 current models
Data verified November 3, 2026 · Dataset 2026-11-03
Specs
Key facts
- Provider
- AssemblyAI
- Model family
- AssemblyAI-TTS
- Release date
- October 28, 2026
- Status
- Current
- Access
- API only
- API model id
- assemblyai-tts-1
- Context window
- Not reported
- Max output
- Not reported
- Input
- text
- Output
- audio
- Task families
- audio
- Declared capabilities
- text to speech
Charts
Against every current audio model
Where AssemblyAI-TTS-1 lands among the current models of its task, on every independent benchmark, on price and on context.
Where it stands
On Artificial Analysis Speech Arena, AssemblyAI-TTS-1 ranks #6 of 13 current audio models. 1 of 11 list a lower price per character. Each bar is the share of current models it beats.
Independent benchmarks
Artificial Analysis Speech Arena
#6of 13
1,221 Elo · ahead of 58%
Price and context
Price per character
#2of 11
$0.000015 · cheaper than 70%
Benchmarks
Independent benchmark results
Scores come from independent evaluators that ran the model themselves, pinned to a dated snapshot. Rank is among current models in the same snapshot. AssemblyAI's own launch figures are listed under strengths with the publisher named, because they are not measured the same way.
| Benchmark | Score | Rank | Measured | Source |
|---|---|---|---|---|
| Artificial Analysis Speech Arena | 1221 Elo | #6 of 13 | November 3, 2026 | Artificial Analysis · 2026-11-03 |
Fit
Strengths, cautions and best uses
- Strengths
- $15 per 1M characters with every voice, all six languages, instant voice cloning, word timestamps and US or EU processing included, and no concurrency fees or minimums
- Built for voice agents: AssemblyAI quotes 90 ms to first audio in production, streamed over WebSocket, HTTP or an OpenAI-compatible route
- More than 4,000 voices, each speaking English, Spanish, French, German, Italian and Portuguese
- Cautions
- Six languages at launch; AssemblyAI says more languages and accents will follow
- No fine-tuned (Pro) voice cloning, pronunciation dictionaries or emotion tags at launch
- The head-to-head figures in the launch post are AssemblyAI tests
- Best for
- Voice agents on live phone calls
- High-volume speech where the cost per character matters
From benchmark to production
Building on AssemblyAI-TTS-1?
Public scores rarely hold on your own data. We test it against the alternatives on your real tasks, then build the agent or pipeline around the model that wins.
AI Model Cost AuditLaunch price $100, regular price $150What the audit includes
Alternatives
Alternatives to AssemblyAI-TTS-1
The closest current audio models by price. The cheapest model that scores as well or better is listed first; failing that, the cheapest one within 3% of the benchmark's scale.
On score and price
AssemblyAI-TTS-1 beside the 4 alternatives listed below, on Artificial Analysis Speech Arena and on price per character.
Artificial Analysis Speech Arena
Measured November 3, 2026, higher is better
- AssemblyAI-TTS-1
- 1,221
- Voxtral Mini TTS 3
- 1,218
- TTS-1
- 1,086
- MAI-Voice-2.1-Flash
- Not scored
- MAI-Voice-2.1
- Not scored
Price per character
Listed today, lower is better
- AssemblyAI-TTS-1
- $0.000015
- Voxtral Mini TTS 3
- $0.000013
- TTS-1
- $0.000015
- MAI-Voice-2.1-Flash
- $0.000015
- MAI-Voice-2.1
- $0.000022
Cheaper, similar score
Voxtral Mini TTS 3
- 13% cheaper per character, $0.000013 vs $0.000015
- 3 points lower on Artificial Analysis Speech Arena, 1218 vs 1221
- From Mistral AI
TTS-1
- Same price per character, $0.000015
- 135 points lower on Artificial Analysis Speech Arena, 1086 vs 1221
- From OpenAI
MAI-Voice-2.1-Flash
- Same price per character, $0.000015
- From Microsoft AI
MAI-Voice-2.1
- 47% more per character, $0.000022 vs $0.000015
- From Microsoft AI
Further reading
More on AssemblyAI-TTS-1
FAQ
AssemblyAI-TTS-1 FAQ
How much does AssemblyAI-TTS-1 cost?
AssemblyAI-TTS-1 costs $0.000015 per character at the standard tier. It is the #2 cheapest of 11 current audio models priced per character. Source: AssemblyAI, verified November 3, 2026.
How does AssemblyAI-TTS-1 score on independent benchmarks?
AssemblyAI-TTS-1 scores 1221 Elo on Artificial Analysis Speech Arena, #6 of 13 current models (Artificial Analysis, measured November 3, 2026). These are independent evaluations, not AssemblyAI's own launch figures.
Is AssemblyAI-TTS-1 open source or API only?
AssemblyAI-TTS-1 is available through AssemblyAI's API only; its weights are not published.
What are the best alternatives to AssemblyAI-TTS-1?
The closest current alternatives by price and measured performance are Voxtral Mini TTS 3 (13% cheaper per character, $0.000013 vs $0.000015), TTS-1 (same price per character, $0.000015), MAI-Voice-2.1-Flash (same price per character, $0.000015) and MAI-Voice-2.1 (47% more per character, $0.000022 vs $0.000015).
Sources
Sources
- Introducing AssemblyAI-TTS-1: text-to-speech built for voice agents · AssemblyAI · official · verified November 3, 2026
- AssemblyAI models · AssemblyAI · official · verified November 3, 2026
- Artificial Analysis Speech Arena leaderboard (text to speech) · Artificial Analysis · independent · verified November 3, 2026 · Artificial Analysis Terms of Use
All 234 sources behind the benchmarks, with their versions, licenses and notes, are in the source catalog.
Cite this page
Van Data Team. "AssemblyAI-TTS-1 Benchmarks, Pricing and Specs." AI Model Benchmark Dataset 2026-11-03. https://vandatateam.com/ai-model-benchmarks/assemblyai-tts-1
Reuse the data: JSON · CSV · or explore every model in the AI model benchmark comparison.
Production evaluation
Deciding whether AssemblyAI-TTS-1 fits your workload?
Public benchmarks narrow the shortlist. We test the finalists on your own tasks, data and cost limits, then build the routing and review controls to run the winner in production.
- Evaluation cases and acceptance thresholds tied to real work
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