
Aug 23, 2026 · 16 min
Diffusion models target real-time voice intelligence
EP 58: Every Millisecond Matters: Diffusion LLMs and the Future of Voice AI | Aditya Grover, Inception
Voice agents must respond quickly without sacrificing the reasoning quality that makes them useful in complex, multi-step interactions.
- 1Latency compounds across voice turns, agent steps, and tool calls, making milliseconds a core product constraint.
- 2Mercury generates and refines complete responses in parallel instead of producing tokens sequentially, aiming to preserve quality at conversational speed.
- 3Inception frames the next phase of AI around value per dollar and watt, not simply larger models or higher token counts.
Don't miss
Aditya Agarwal explains how Mercury begins with a rough complete response and refines it in parallel to reduce latency without abandoning quality.
The brief
Inception co-founder and CTO Aditya Agarwal argues that latency is no longer a technical footnote: every voice turn, agent step, and tool call compounds delay.
Mercury takes a different route from conventional language models, starting with a rough full-answer guess and refining it in parallel rather than emitting one token at a time.
The central tradeoff is speed versus intelligence. Inception is positioning Mercury for voice agents that respond in real time while retaining the quality expected from newer reasoning systems.
Agarwal says Mercury is designed to fit existing production stacks through an OpenAI-compatible API, while open-source release is not on the near-term roadmap.
The broader thesis is “value maxing”: as companies measure throughput, cost, and energy, intelligence per dollar and watt may matter more than maximizing tokens.
Agarwal expects voice agents to become smarter, more natural, and less interrupted over the next five to ten years, especially in customer support and other intelligent interactions.
Featuring
Listen to the full episode and explore every guest, topic, and moment on PodLume.

Aditya Agarwal
Inception
IIT Delhi
Stanford University