Uberduck is an AI vocals and text-to-speech platform. Produce TTS, singing performances, and custom voice models with a large library and a developer API.
Best AI API Tools (2026)
Compare AI APIs and model gateways for adding LLMs, image generation, speech, and embeddings to your app — from single-provider endpoints to unified multi-model platforms.
YesCode is a high-performance API router for Claude Code, OpenAI Codex, and Gemini CLI with unified billing, real-time usage tracking, 38ms median latency, SOC 2 Type II certification, and a free tier of 1M tokens per month.
0011.ai is a proxy service offering stable and low-cost access to Claude Code and OpenAI Codex via two clients: 0011 Code (GUI) and 0011 Switch (CLI manager).
GACCode is an AI code proxy service that provides subscription-based access to Claude Code, Codex, and Google Gemini CLI through a reliable relay gateway, letting developers use leading terminal coding agents without direct provider accounts.
CodeProxy is a high-value subscription platform and API gateway designed for heavy OpenClaw, Codex, and Claude Code users, combining multi-account pooling, intelligent routing, and large-quota packages to sustain long coding workflows.
aicoding.sh provides a stable proxy service for Claude Code, OpenAI Codex, and Gemini with a high-availability account pool, zero ban risk, 99.9% uptime SLA, 50ms P99 latency, and one-click CLI install for individuals and teams.
Aiberm unifies OpenAI, Claude, Gemini and 30+ frontier LLMs behind one API endpoint, with usage-based pricing discounted up to 90% and a 99.9% uptime SLA.
NanoBananaAPI is a dedicated API gateway for Google Nano Banana 2 and Nano Banana Pro image generation, offering 4K output and editing at prices 40-60% below Google, fal.ai, and Replicate.
Fusecode is a paid subscription service that gives developers in China direct, low-latency access to Claude Code, OpenAI Codex, Gemini and OpenClaw via a single API endpoint change. No VPN or foreign credit card required. Plans from ¥179 to ¥1,599/month, each with a weekly USD credit allowance.
AIModelFind is a free directory of text, image, video and audio AI models that lists every provider selling each model with its price, updated daily.
TypeSafe AI is a San Francisco lab building System One models for automation. Its first public model, Jev, answers typed questions against a state and returns structured decisions code can act on.
Related categories
What is an AI API?
An AI API is an HTTP endpoint you send a request to — a prompt, image, or audio — and get back a model's output, so you can add AI features without training or hosting models yourself. You authenticate with an API key and pay per token or per request. Some are single-provider (OpenAI, Anthropic, Google); others are gateways that route one request across many models.
What AI APIs offer
- REST and streaming endpoints for chat, image, and audio
- One API key routing across many model providers
- Token-based, pay-as-you-go pricing with usage dashboards
- Official SDKs for Python, JavaScript, and more
- Function calling, structured output, and tool use
- Rate limits, fallbacks, and OpenAI-compatible schemas
Who uses AI APIs
01
App developers
Add chat, summarization, or vision to a product without running your own model infrastructure.
02
Teams comparing models
Test GPT, Claude, Gemini, and open models behind one gateway to pick the best fit per task.
03
Cost and reliability optimizers
Route requests to cheaper or faster models and fail over automatically when a provider goes down.
04
Agent and automation builders
Wire function calling and tool use into agents, workflows, and backend jobs.
How AI APIs work
Your app sends an HTTPS request with an API key and a JSON payload — the prompt plus parameters like model and temperature — to the provider's endpoint. The model runs inference on their servers and returns the result, either all at once or streamed token by token. Gateways sit in front of several providers, translating one request format (often OpenAI-compatible) to whichever model you target and metering usage for billing.