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Teardown · elevenlabs

ELEVENLABS

ELEVENLABS

CategoryVoice AIValuation · $3.3B · 2025Site ↗
  • Andreessen Horowitz
  • Sequoia Capital
  • ICONIQ Capital

Audio files + voice recordings + proprietary TTS model weights + API infrastructure.

01

Public data / API layer

Internal replication score

Medium
0.40

Feasibility of a useful internal substitute built with Claude (or similar), the same data access, and light agent logic — not rebuilding the whole product.

IRS = 0.30·D + 0.25·L + 0.20·O + 0.15·R + 0.10·Sthis record · 40%
  • D

    Data accessibility

    weight 0.300.40
    • 1.0mostly customer-owned / public / standard third-party sources
    • 0.5mixed accessibility
    • 0.0hard-to-access or proprietary source layer
  • L

    LLM substitutability

    weight 0.250.10
    • 1.0mostly retrieve / prompt / cite / summarize / classify / compare
    • 0.5mixed standard + custom behavior
    • 0.0strongly custom model behavior (fine-tunes on proprietary data, etc.)
  • O

    Output simplicity

    weight 0.200.60
    • 1.0straightforward internal work product (memo, list, reply, SQL query)
    • 0.5moderately specialized
    • 0.0highly specialized (e.g. FDA-graded clinical text)
  • R

    Review / risk tolerance

    weight 0.150.70
    • 1.0internal use with human review is acceptable
    • 0.5moderate risk
    • 0.0very low tolerance for error (e.g. external legal filings)
  • S

    Surface complexity

    weight 0.10inverse — higher means less surface dependence0.30
    • 1.0a simple internal shell is enough
    • 0.5polished workflow matters somewhat
    • 0.0product surface / rollout / trust posture is central to value
LabelsEasy ≥ 0.67Medium ≥ 0.34Hard < 0.34

Missing factor rows use heuristics from wrapper scores. Editorial heuristic, not investment advice.

Build it yourself

Recreate the workflow inside your org.

Internal build

Build it yourself

Same audio files + open TTS models (Coqui, TortoiseTTS, Bark) + voice cloning scripts — quality and latency gap remains large.

Internal use only. Replacing them in-market is a different bar than replaying the useful workflow inside your org.

01 · Connectors & flow

Customer audio uploads
Customer audio uploads
ElevenLabs Voice Library (10k+ pre-generated voices)
ElevenLabs Voice Library (10k+ pre-generated voices)
LibriSpeech ASR corpus
LibriSpeech ASR corpus
Mozilla Common Voice
Mozilla Common Voice
Licensed professional voice datasets
Licensed professional voice datasets

Internal build map

Data in

Connectors
Connectors

Agent layer

Planner
Tools + retrieval
Reasoning model

Logic

proprietary TTS models
voice cloning
STT transcription
real-time streaming
multilingual (70+ languages)
custom foundation weights

Outputs

Internal search
Answer
Citations

02 · Claude / agent prompt

Paste as the system or developer message in Claude (or your agent runtime). Scroll to read; Copy grabs the full text.

Claude / agent prompt

// Voice generation assistant for internal prototyping You are a voice synthesis assistant for [YOUR_COMPANY]. You help teams generate speech from text using ONLY open-source TTS models and audio files the user provides or has access to. ## What you must do 1. Accept text input and voice reference files from the user 2. Use open TTS models (Coqui TTS, Bark, or similar) to generate speech 3. Document model choice, parameters, and quality trade-offs 4. Cite which voice sample was used for cloning if applicable ## What you are not Not a replacement for production TTS services — internal prototyping only, human review required for quality and rights clearance. ## Refusal Refuse if the user requests voice cloning without explicit rights to the source audio. Refuse if the output will be used in customer-facing or public contexts without legal review. ## Safety Internal use only. All generated audio must be reviewed for quality and rights before any external use.

03 · Result

Generate a 10-second voiceover for an internal demo using a neutral English voice
Open TTS model

Generated audio using Coqui TTS with neutral preset — quality lower than commercial APIs, latency ~2s.