# Kalpa Labs

**Canonical:** https://apis.io/providers/kalpa-labs/  
**Website:** https://kalpalabs.ai  
**APIs profiled:** 3

Kalpa Labs is a San Francisco audio-research lab (Y Combinator Fall 2025) building generalist speech models that unify text-to-speech, multi-speaker conversation, voice cloning, and speech-in / speech-out reasoning behind one API — steerable with natural instructions and in-context learning the way a large language model is. Their Kalpa Speech API exposes stable public model ids over a clean REST interface: POST /v1/tts turns text into 24 kHz WAV audio, POST /v1/converse completes the open turn of a conversation (authored speech or contextual TTS), and a stateful WebSocket streams multi-speaker sessions. The developer surface ships a committed OpenAPI 3.1 contract, an AsyncAPI 3.0 WebSocket protocol, docs with a markdown twin per page, an llms.txt, and a browser Studio playground. Founded by Prashant Shishodia and Gautam Jha.

## Kin Score — 38.6 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 38.6).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 55.7 |
| Governance | 16.7 |
| Contract Governance | 16.7 |
| Operational Transparency | 2.6 |
| Developer Ergonomics | 70.8 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## Agent readiness — 34.8 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | verified |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (3)

- **Kalpa Labs Meta API** — Health checks and capability discovery.
- **Kalpa Labs Speech API** — Text-to-speech and conversational generation.
- **Kalpa Labs Usage API** — Per-key usage and metering.

## MCP servers (1)

- **Kalpa Labs MCP Server**

## Security (2)

- **Kalpa Labs Authentication** — apiKey · 1 scheme
- **Kalpa Labs Domain Security** — TLSv1.3 · DMARC

## Tags

Company, Speech, Text-to-Speech, Voice, Audio, Conversational AI, Machine-Learning, Artificial Intelligence

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/kalpa-labs/). Scores are computed from the provider's own public artifacts under a published rubric.