Inworld confirms Ultravox acquisition, undercuts ElevenLabs TTS pricing by ~8x

rohanpaul_ai · x · 2026-10-01

Inworld's site confirms the Ultravox acquisition to accelerate speech-to-speech research and voice agent capabilities. Inworld positions itself as a research lab and inference provider for consumer-scale realtime AI, offering first-party TTS/STT, LLM routing, and inference.

Aggressive pricing comparisons on Growth plan: Realtime TTS at $12.50/1M characters vs ElevenLabs' $100, Realtime STT at $0.46/hour vs Deepgram, zero LLM markup, dedicated GPUs from $5/GPU-hour. Voice companion app OtherHalf hit 1M users in 19 days on its stack.

Related event: Inworld Acquires Voice Agent Platform Ultravox(4 posts)→

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