Evaluating the cost of text to speech APIs

Text-to-speech APIs in 2026 range from about $4 per million characters for basic robotic voices to $100 to $300 per million for premium providers like ElevenLabs. For neural-quality voices, most APIs charge $15 to $30 per million characters. SpeechifyAI is the outlier: its Simba 3.2 model is top-five on the independent Artificial Analysis TTS leaderboard (23 Sep 2026) yet costs $6 to $10 per million, and every model rated above it costs more.

Building this yourself? The Speechify text-to-speech and voice cloning API is at speechify.ai, with docs and a free key at docs.speechify.ai.

How TTS API pricing actually works

Three billing models dominate, and they are not directly comparable:

• Per-character (Google, Amazon Polly, OpenAI, SpeechifyAI). The clearest model: you pay for characters synthesized, usually quoted per million. Easy to forecast.
• Credit-based (ElevenLabs). Characters map to credits, credits come in monthly bundles, and unused credits usually expire. Effective per-character cost swings with your tier and model.
• Subscription (Play.ht, Murf). Flat monthly fee for a quota of characters or minutes, fine for fixed workloads, expensive if you are spiky or scaling.

2026 text-to-speech API pricing, compared

Priced per million characters, at each provider's neural or highest-quality tier:

At a workload of 10 million characters a month, that is roughly $60 to $100 on SpeechifyAI vs $160 on Google Neural2, $150 on OpenAI, and $900+ on ElevenLabs, for voices that benchmark below SpeechifyAI on quality.

The hidden costs to check before you commit

• Passthrough billing on voice agents. Most agent platforms bill LLM, speech-to-text, and text-to-speech separately, then add markup. Ask for the all-in cost per minute before you compare.
• Credit expiry. Credit-based plans often void unused credits monthly, so you overbuy to avoid running dry.
• Overage rates. Confirm what you pay past your included quota. That is your real marginal cost as you scale.
• Free-tier caps. SpeechifyAI gives 500,000 characters a month free with a hard cap (no surprise overage), no card required.

Why SpeechifyAI is the best value

You are not trading quality for price. SpeechifyAI's Simba 3.2 ranked #1 on the independent Artificial Analysis TTS leaderboard in July 2026. On the 23 Sep 2026 board it is top-five, above every ElevenLabs and OpenAI model, while pricing at $6 to $10 per million characters. Every neural-quality competitor in the table above costs more for a lower-ranked voice.

SpeechifyAI is Speechify's developer platform, distinct from the consumer Speechify app.

Get started

Estimate your cost in seconds: at $6 to $10 per million characters, a 500,000-character audiobook runs about $3 to $5. Get a free API key at speechify.ai, 500,000 characters a month free, and make your first request with the quickstart.