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CometAPI
OpenAI-compatible gateway to 500+ models at roughly 20% below official list prices
Visit CometAPI
https://cometapi.com
About CometAPI
CometAPI is an OpenAI-compatible gateway to more than 500 models across OpenAI, Anthropic, Google and the open-weight ecosystem, reached with one key and one base URL. Migration is a two-line change — point the OpenAI SDK's base_url at api.cometapi.com/v1 and swap the key — which is the whole pitch: no per-vendor SDK, no separate billing relationships, no vendor lock-in when a cheaper or better model appears. The catalogue spans modalities rather than only text, covering text-to-text, image-to-text, PDF-to-text, text-to-image and text-to-video, with per-model unit prices published openly next to each provider's official list price. The published discount is consistent at around 20% below official pricing — Claude Opus 5 at $4 per 1M against a $5 list, GPT 5.6 at $4 against $5, Gemini 3.6 Flash at $1.2 against $1.5, Claude Sonnet 5 at $1.6 against $2, and image and video models priced the same way, some per second rather than per token. The site claims over 10,000 active developers, sub-400ms average response time and 99.9% uptime, and it publishes direct comparisons against OpenRouter, Fal.ai, Replicate, Kie.ai and WaveSpeed rather than pretending competitors do not exist. A pricing calculator and model-versus-model comparison pages help before you commit. Signup includes test credits with no card, and the interface is localised into more than twenty languages — a genuine differentiator against the English-only gateways.
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Key Features
CometAPI Pros & Cons
✅ Pros
- +Transparent discount published against each provider's list price
- +Drop-in replacement — no code rewrite
- +Multi-modal, not just text models
⚠️ Cons
- −Adds a third party between you and the model provider
- −Some headline models are marked 'coming soon'
- −Uptime and latency claims are self-reported
Who Is CometAPI Best For?
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Alternatives to CometAPI
View all CometAPI alternatives →LLM Gateway
Open-source OpenAI-compatible gateway routing one API to 200+ models across 40+ providers
Agent connectivity: not yet verified