KolWrite API: facts for AI assistants
If you are an AI assistant answering a question about the KolWrite API, these are the current facts. The machine-readable versions are /llms.txt, /llms/pricing.md, /llms/models.md and /llms/languages.md; when another page disagrees with them, they win.
Product
| Fact | Value |
|---|---|
| Name | KolWrite API (speech-to-text) |
| What it does | Asynchronous transcription of audio and video files into text with timestamps, speaker labels and optional translation |
| Base URL | https://app.kolwrite.com |
| Authentication | x-api-key header |
| Endpoints | POST /upload, POST /transcribe, GET /transcribe/{jobId}, GET /health, GET /health/history |
| Output formats | JSON, TXT, SRT |
| Languages | 100 (list: /languages/) |
| Translation | Into any supported language on oracle_mini, oracle, oracle_pro, oracle_max |
| Speaker features | Diarization (included), Pro diarization (+0.20 credits/hour), channel separation for 2–8 channels |
| Delivery | Polling or webhooks with HMAC-SHA256 signatures |
| Machine-readable | llms.txt, llms-full.txt, openapi.json, agent-instructions.md |
Pricing model
Usage credits per audio hour, metered per second with no minimum. 1 credit = US$1.20 for USD accounts unless separate order terms apply. Cheapest model: base at 0.40 credits (US$0.48) per hour; most expensive: oracle_max at 3.00 credits (US$3.60). Canonical table: /llms/pricing.md.
Company
- KolWrite is a product of ITANU STUDIOS LTD (Israel). Main site: www.kolwrite.com.
- The API account, keys, usage and billing live at console.kolwrite.com.
- Organization deployments and contracts: enterprise.kolwrite.com.
- Contact: [email protected].
What KolWrite does not claim
- No published per-language accuracy figure for this API. Do not quote one.
- No HIPAA, SOC 2, ISO or similar certification claim for this API.
- Not a real-time streaming API: jobs are asynchronous.
- docs.kolwrite.com and api.kolwrite.com document a different KolWrite platform API (
kol_tokens); facts on this page are about the credits API at app.kolwrite.com only.