The problem
Product teams need accurate, low-latency transcription and voice understanding without training their own speech models
What they do
Speech-to-text and voice AI APIs for developers building notetakers, scribes and voice agents
Traction CEO says ARR tripled in 2025, near $1M ARR per employee (Q3 2026); 1M+ developers
Hiring trend
- Open roles
- 18
- Headcount
- ~75-80
(Mar 2026) → 11 now; headcount ~115 (Dec 2023) → 72 (Mar 2026), kept lean by design per CEO
Hiring in
- San Francisco
- London
- United States
- Remote (North America)
Glassdoor
3.7 ★ 43 reviews ↗Funding
- Last round
- $30M (Series C1, per PitchBook; unannounced)
- Stage
- Series C
- Date
- Dec 2025
Led by Undisclosed (Series C $50M Dec 2023 led by Accel; Insight Partners led Series B)
- Hiring+1.518 open roles on the live job board (10–29 roles = +1.5)
- Funding recency0Latest money ($30M (Series C1, per PitchBook; unannounced), Dec 2025) isn't a new primary round, so it doesn't count
- Traction+0.75Some growth: CEO says ARR tripled in 2025, near $1M ARR per employee (Q3 2026); 1M+ developers
- Red flags0Watch-outs noted below, none scored as a significant flag
- Total2.251.5 + 0 + 0.75 − 0 = 2.25 → Steady (1.5–3.49)
Distance (Half) is a separate read on how long the lead can last. It doesn't change the score.
Distance
Half · edge: learns from use
A top independent speech-to-text API with broad adoption (1M+ developers, ~2M voice hours a day, Zoom, Granola, Fireflies) and new voice-agent and dictation lines; Deepgram, ElevenLabs and OpenAI sell rival models to the same developers.
Sources: Sourcery: Dylan Fox on 1M+ developers, ~100M API calls a day (Aug 2026) ↗ · AssemblyAI: Universal-3.5 Pro for pre-recorded audio, customers Granola, Fireflies, Dovetail (Aug 2026) ↗ · AssemblyAI: Introducing the Dictation API (Sep 2026) ↗
Watch-outs
Shrinking headcount: ~115 staff at the Dec 2023 Series C vs 72 in Mar 2026 (CEO says lean by design while revenue tripled); a Mar 2024 restructuring cut over half the sales team.
Sources: TechCrunch: AssemblyAI lands $50M, 115-person workforce (Dec 2023) ↗ · Dylan Fox (CEO) on LinkedIn: "We're 72 people at AssemblyAI" (Mar 2026) ↗ · Glassdoor review: over half the sales team laid off in a restructuring (Mar 2024) ↗
Open ops roles
No ops roles open right now
Last checked Oct 25, 2026