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AI API marketplace: buy OpenAI, Claude & DeepSeek keys at up to 90% off. Fingerprint-verified providers — no fake models.

LeetCode
The bug you can't spot today ships tomorrow. Train before the incident: one realistic AI pull request a day, graded against a canonical review. Free, no signup.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | apimaster.ai | diffdojo.com |
| Company | Startup from Singapore · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


APIMaster is an AI API marketplace offering OpenAI, Claude, and DeepSeek API keys at up to 90% off official pricing. One API key gives you access to all major models with OpenAI-compatible endpoints — plug directly into Cursor, Claude Code, or any SDK. Every provider is fingerprint-verified...
No description of DiffDojo yet.
What each product offers, as listed by its team.


An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of DiffDojo yet.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing APIMaster and DiffDojo.
APIMaster's answer
Next.js, Go, Python (Flask), PostgreSQL
APIMaster's answer
Fingerprint verification — we test every provider weekly using behavioral fingerprinting to detect model substitution. You can see which providers serve real models vs fake substitutes on our public leaderboard. No other API marketplace does this.
APIMaster's answer
APIMaster is the only marketplace that verifies what model you're actually getting. Competitors like OpenRouter route traffic without verification — you might pay for Claude Opus but receive a cheaper model. APIMaster detects this and only recommends verified providers. Plus, prices are up to 90% off official rates — you get both cost savings and model authenticity guaranteed.
APIMaster's answer
Developers who use OpenAI, Claude, or DeepSeek APIs and want to reduce costs without sacrificing model quality. Especially useful for developers in markets where direct API access is expensive or restricted.
APIMaster's answer
Built after discovering that many cheap API resellers secretly substitute expensive models with cheaper ones. We built fingerprint detection first, then a marketplace that only lists providers that pass verification.
Share your experience with using APIMaster and DiffDojo. For example, how are they different and which one is better?
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