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Comparison · 2026
OnAPI vs WriteFastAI
OnAPI vs WriteFastAI: side-by-side comparison of pricing, ratings, and features on SoftwareVital (2026).
Feature lists share 0 overlapping items across the two listings.
free
OnAPI is an AI model API gateway that routes text, image, video, and code requests to GPT, Claude, and Gemini through one key.
VS
free
Chrome extension for writing and summarizing content using your own OpenAI API key.
Side-by-side
| Attribute | OnAPI | WriteFastAI |
|---|---|---|
| Rating | — | — |
| Reviews | — | — |
| Pricing | free | free |
| Votes | 0 | 0 |
| Category | AI Agent | AI Summarizer |
Features checklist
| Feature | OnAPI | WriteFastAI |
|---|---|---|
| Turn models into products | ||
| Ship ideas | ||
| Fully OpenAI-compatible | ||
| Change one line���your base_url���and you're done | ||
| Works out of the box with the OpenAI SDK | ||
| LangChain | ||
| Claude Code | ||
| Cursor | ||
| Cline | ||
| and Cherry Studio | ||
| Easy installation as a Chrome extension | ||
| Customizable prompts and tone | ||
| Requires users to provide their own OpenAI API key | ||
| Limited to the capabilities of the OpenAI API |