{"slug":"openai-tts","name":"OpenAI TTS","domain":"openai.com","verdict":"As of 2026-07-15, ChatGPT, Claude, Gemini, Grok collectively rank OpenAI TTS #7 of 9 for text-to-speech api for voice agents. Source: https://modelsagree.com/product/openai-tts (modelsagree.com, CC BY 4.0).","best_rank":7,"categories":1,"entries":[{"slug":"best-text-to-speech-api-for-voice-agents","title":"Best text-to-speech API for voice agents","rank":7,"of":9,"score":2,"appearances":1,"modelRanks":{"Claude":4},"reason":"Aggressively cheap (~$0.015/min), instruction-steerable delivery (\"speak like a sympathetic agent\"), solid streaming latency, and zero extra vendor if your agent already runs on OpenAI models — the best price/effort ratio for teams that just need a good-enough voice.","reasons":[{"model":"Claude","reason":"Aggressively cheap (~$0.015/min), instruction-steerable delivery (\"speak like a sympathetic agent\"), solid streaming latency, and zero extra vendor if your agent already runs on OpenAI models — the best price/effort ratio for teams that just need a good-enough voice."}],"fixes":[{"model":"Claude","fix":"No voice cloning, a small fixed voice set, and no word-level timestamps, which makes precise barge-in/interruption alignment and brand voices impossible."}],"updated":"2026-07-15","rank_history":{"days":["2026-06-29","2026-06-30","2026-07-08","2026-07-09","2026-07-10","2026-07-12","2026-07-13","2026-07-14","2026-07-15"],"ranks":[7,6,null,null,null,8,null,10,null]},"api":"https://modelsagree.com/api/v1/best/best-text-to-speech-api-for-voice-agents.json"}],"page":"https://modelsagree.com/product/openai-tts","check":"https://modelsagree.com/check?q=OpenAI%20TTS","updated":"2026-08-10T18:18:45.051Z","attribution":"modelsagree.com, CC BY 4.0"}