DEPLOYDatabase

Company

Hopper

Hopper is a San Francisco inference company in Y Combinator's Fall 2026 batch that optimizes, serves and post-trains open-weight speech and language models for…

Founded
2026
Status
Private

Employees

2

Overview

Hopper is a San Francisco inference company in Y Combinator's Fall 2026 batch that optimizes, serves and post-trains open-weight speech and language models for real-time voice agent companies.

Reality check

Latency claims (company-claimed, Oct 2026)

Claims 80 ms time to first token on Gemma 4 31B, 150 ms time to first audio on Qwen 3 TTS, and Nemotron 3.5 ASR at twice the speed of Deepgram Nova-3.

Verified record

Verified deployments
None on file
Active incidents
None on file

Key facts

Service model (company-stated)

Post-trains open-source STT, TTS and speech LLMs on customers' production calls, then serves and improves them against live traffic.

Data & sources

Web sources

2

2 sources backing this record.View all →

Current leadership (2)

Founders (2)

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Safety record

No incidents on record for Hopper.

Only active incidents are counted. Retracted incidents are excluded from this summary but remain reachable at their canonical URLs.

Full safety record: incidents, sourcing, and exposure data →

Mentioned on (6)

Registry pages whose text names Hopper.