# Free AI

> OpenAI-compatible gateway across free-tier LLM providers with health-aware routing, automatic failover, and no credit card required.

Live status is rendered from public model and provider APIs. Full exports omit live runtime views; static files are build-time content. Private browser-local state and experiment mutations are excluded.

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## Public pages

- [Free AI — 80+ chat models through one gateway key](https://ai-gateway.sassmaker.com/index.md): OpenAI-compatible gateway across free-tier LLM providers with health-aware routing, automatic failover, and no credit card required.
- [About — free-ai gateway](https://ai-gateway.sassmaker.com/about.md): Why it exists, how it routes, and what the SLOs are.
- [Analytics](https://ai-gateway.sassmaker.com/analytics.md): OpenAI-compatible AI gateway routing across free-tier providers with health-aware selection.
- [Authentication](https://ai-gateway.sassmaker.com/authentication.md): OpenAI-compatible AI gateway routing across free-tier providers with health-aware selection.
- [Free AI - Benchmark & Cost Optimizer](https://ai-gateway.sassmaker.com/benchmark.md): Fixture-backed model benchmark matrix, workload recommendations and public experiment fixtures. Browser-local snapshots and experiment mutations are excluded.
- [AI Gateway changelog — Verified updates](https://ai-gateway.sassmaker.com/changelog.md): A first-party record of meaningful releases to the sass-maker AI Gateway.
- [Chat Completions](https://ai-gateway.sassmaker.com/chat-completions.md): OpenAI-compatible AI gateway routing across free-tier providers with health-aware selection.
- [Free AI — Live](https://ai-gateway.sassmaker.com/dashboard.md): Public aggregate gateway traffic, routing readiness, provider quotas and model health. Default view: seven days, grouped by provider.
- [Decision APIs](https://ai-gateway.sassmaker.com/decisions.md): OpenAI-compatible AI gateway routing across free-tier providers with health-aware selection.
- [API documentation](https://ai-gateway.sassmaker.com/docs.md): OpenAI-compatible API documentation for the Free AI Gateway.
- [Analytics](https://ai-gateway.sassmaker.com/docs/analytics.md): Retrieve aggregated usage statistics for a specific project — request counts, success/failure rates, and breakdowns by provider and model.
- [Authentication](https://ai-gateway.sassmaker.com/docs/authentication.md): How to obtain and use API keys with the AI Gateway.
- [Chat Completions](https://ai-gateway.sassmaker.com/docs/chat-completions.md): Generate chat completions using the OpenAI-compatible /v1/chat/completions endpoint.
- [Live Dashboard](https://ai-gateway.sassmaker.com/docs/dashboard.md): Public HTML dashboard at /dashboard showing real-time KPIs, throttle heatmap, model health, and project usage for the gateway.
- [Decision APIs](https://ai-gateway.sassmaker.com/docs/decisions.md): Typed decisions and comparisons over one frozen input.
- [Embeddings](https://ai-gateway.sassmaker.com/docs/embeddings.md): Generate vector embeddings using /v1/embeddings, including the Modal EmbeddingGemma 2 experiment.
- [Error Handling](https://ai-gateway.sassmaker.com/docs/error-handling.md): Understand the gateway's error response format, error types, HTTP status codes, and how to identify requests using gateway headers.
- [Getting Started](https://ai-gateway.sassmaker.com/docs/getting-started.md): An OpenAI-compatible AI gateway that routes requests across free-tier providers with health-aware routing, streaming, and analytics.
- [Health](https://ai-gateway.sassmaker.com/docs/health.md): Check the real-time health state of every model in the gateway, including success rates, average latency, cooldown status, and daily usage.
- [Image Generation](https://ai-gateway.sassmaker.com/docs/images.md): Generate images using the OpenAI-compatible /v1/images/generations endpoint, routed across Together FLUX, Workers AI, Pollinations, NVIDIA NIM, and Gemini Imagen.
- [Models](https://ai-gateway.sassmaker.com/docs/models.md): List available models and their metadata using GET /v1/models.
- [Provider Stats](https://ai-gateway.sassmaker.com/docs/provider-stats.md): Real-time throttle, success, and cooldown telemetry per provider via GET /v1/stats/providers — the raw signal behind the gateway's health-aware routing.
- [Rate Limiting](https://ai-gateway.sassmaker.com/docs/rate-limiting.md): Learn how the gateway enforces IP-based and per-provider rate limits, and how to handle 429 responses gracefully in your application.
- [Responses API](https://ai-gateway.sassmaker.com/docs/responses-api.md): Generate responses using the OpenAI Responses API format via /v1/responses.
- [Speech-to-Speech](https://ai-gateway.sassmaker.com/docs/speech-to-speech.md): Send audio input and receive audio output via the /v1/audio/speech-to-speech endpoint.
- [Speech-to-Text](https://ai-gateway.sassmaker.com/docs/speech-to-text.md): Transcribe audio files to text using the OpenAI-compatible /v1/audio/transcriptions endpoint.
- [Text-to-Speech](https://ai-gateway.sassmaker.com/docs/text-to-speech.md): Synthesize audio from text via the OpenAI-compatible /v1/audio/speech endpoint, backed by Cloudflare Workers AI MeloTTS.
- [Video Generation](https://ai-gateway.sassmaker.com/docs/videos.md): Submit async video generation jobs via /v1/videos/generations and poll for completion. Routed through Together AI to Sora, Veo, Kling, Wan, Seedream, and Vidu.
- [Embeddings](https://ai-gateway.sassmaker.com/embeddings.md): OpenAI-compatible AI gateway routing across free-tier providers with health-aware selection.
- [Error Handling](https://ai-gateway.sassmaker.com/error-handling.md): OpenAI-compatible AI gateway routing across free-tier providers with health-aware selection.
- [FAQ — AI Gateway](https://ai-gateway.sassmaker.com/faq.md): Answers to common questions about the free OpenAI-compatible AI gateway: multi-provider routing, health-aware selection, automatic fallback, analytics, and Cloudflare Workers deployment.
- [Getting Started](https://ai-gateway.sassmaker.com/getting-started.md): OpenAI-compatible AI gateway routing across free-tier providers with health-aware selection.
- [Free AI - Health](https://ai-gateway.sassmaker.com/health.md): Public gateway readiness, fallback order, provider quotas, seven-day routing ledger and model health.
- [Image Generation](https://ai-gateway.sassmaker.com/images.md): OpenAI-compatible AI gateway routing across free-tier providers with health-aware selection.
- [Free AI - Model Catalog](https://ai-gateway.sassmaker.com/models.md): Public model catalog with routing status, capabilities, context limits, health and evaluation metadata.
- [Provider Stats](https://ai-gateway.sassmaker.com/provider-stats.md): OpenAI-compatible AI gateway routing across free-tier providers with health-aware selection.
- [Rate Limiting](https://ai-gateway.sassmaker.com/rate-limiting.md): OpenAI-compatible AI gateway routing across free-tier providers with health-aware selection.
- [Responses API](https://ai-gateway.sassmaker.com/responses-api.md): OpenAI-compatible AI gateway routing across free-tier providers with health-aware selection.
- [Speech-to-Speech](https://ai-gateway.sassmaker.com/speech-to-speech.md): OpenAI-compatible AI gateway routing across free-tier providers with health-aware selection.
- [Speech-to-Text](https://ai-gateway.sassmaker.com/speech-to-text.md): OpenAI-compatible AI gateway routing across free-tier providers with health-aware selection.
- [Gateway Status — Live Model & Provider Health](https://ai-gateway.sassmaker.com/status.md): Live model registry and provider health: model scores, request counts, success rates, and quota status.
- [Text-to-Speech](https://ai-gateway.sassmaker.com/text-to-speech.md): OpenAI-compatible AI gateway routing across free-tier providers with health-aware selection.
- [Video Generation](https://ai-gateway.sassmaker.com/videos.md): OpenAI-compatible AI gateway routing across free-tier providers with health-aware selection.

## Machine-readable

- [Full content](https://ai-gateway.sassmaker.com/llms-full.txt): Bounded public page content
- [Markdown catalog](https://ai-gateway.sassmaker.com/api/md/_catalog): All registered public routes
- [Agent catalog](https://ai-gateway.sassmaker.com/api/ai): Existing discovery contract
- [AI usage policy](https://ai-gateway.sassmaker.com/ai.txt): Permissions and attribution
- [Sitemap](https://ai-gateway.sassmaker.com/sitemap.xml): Canonical HTML pages
- [OpenAPI](https://ai-gateway.sassmaker.com/openapi.json): Public API contract