One API for Multiple AI Models

KeyoAPI is a developer-first AI API relay: chat, image and speech are OpenAI-compatible, while OCR, vision tools, async video/docs and digital-human models run on dedicated REST paths — same key, same prepaid balance. No five vendor dashboards, no five invoices.

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What we do

We aggregate many model providers behind one prepaid account. For chat (and supported image/speech paths), keep the OpenAI SDK: set OPENAI_BASE_URL=https://www.keyoapi.xyz/v1 and swap model=. For OCR, matting, detection, async video and avatars, call the documented dedicated paths with the same key.

OpenAI-compatible paths: /v1/chat/completions, /v1/images/generations, /v1/audio/transcriptions, /v1/audio/speech.
Dedicated REST: OCR, CV tools, async TTS/video, digital humans — billed per page / request / second / characters.
One key, one balance: no per-vendor accounts or credits to manage.
A free tier: fixed $0 model IDs for prototyping (fair-use limits apply — see /free-models).

Pricing philosophy

We publish rates openly, model by model. Sample indicative Keyo sell rates:

Capability	Typical official list	KeyoAPI
Flagship chat (GPT-class)	OpenAI GPT-5.4 list ~$2.50 / $15.00 per 1M in/out (confirm on openai.com/api/pricing)	~$1.84 / $9.19 per 1M in/out
High-volume cheap LLM	OpenAI GPT-5.4 mini list ~$0.75 / $4.50 per 1M in/out (confirm on openai.com/api/pricing)	~$0.45 / $1.80 per 1M in/out
Claude-class flagship	Anthropic Claude Fable 5.1 list ~$10 / $50 per 1M in/out (confirm on platform.claude.com)	~$7.35 / $36.77 per 1M in/out

Full list: /compare · /pricing-list · deep dives: Gemini pricing · DeepSeek pricing · Claude pricing · OpenAI pricing · remove.bg API · TTS API · Voice clone API · Avatar video API

Free models at $0

Call a free ID from the catalog at $0 with fair-use limits. Metered twins stay available for production. Rules: /free-models

Atria-dawn-v2$0 DeepSeek-Prover-V2-7B$0 deepseek-v4-flash-free$0 deepseek-v4-pro-free$0 dots-3-note-preview:free$0 gemini-robotics-er-2-preview:free$0 gemma-4-26b:free$0 gemma-4-31b-it:free$0 glm-5.2-free$0 glm-5.2-thinking:free$0 glm-5.2:free$0 glm-5.3-flash-search:free$0

Model categories

GPT-class chat Claude-class reasoning DeepSeek open models GLM Kimi Speech-to-text Document & OCR TTS & audio

Support

For product docs see Docs. Account and billing questions: use the console after signup, or read FAQ, Privacy, and Terms.

Start building

Grab a key and make your first request in minutes — free models included.

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