Every text-to-speech model on the board now publishes a cost

Four token- or hourly-priced TTS models gain converted per-character costs, and with a published cost they become rankable under the cost objective.

Google gemini-3.1-flash-tts (~USD 33.3), OpenAI gpt-4o-mini-tts (~USD 20), Soniox tts-rt-v1 (~USD 13) and Qwen qwen3-tts-flash (USD 10, an exact vendor rate) publish costs per 1M characters. Converted figures use 900 characters per spoken minute and carry a tilde.

With a published cost these models enter cost-objective ranking and balanced cost-weighting. qwen3-tts-flash is now the cheapest text-to-speech model on the board while ranking last on naturalness - a key optimized for cost may route to it.