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Show HN: A private, flat monthly subscription for open-source LLMs

(synthetic.new)
29 points reissbaker | 2 comments | 28 Aug 25 19:03 UTC | HN request time: 0.402s | source

Hey HN! We've run our privacy-focused open-source inference company for a while now, and we're launching a flat monthly subscription similar to Anthropic's. It should work with Cline, Roo, KiloCode, Aider, etc — any OpenAI-compatible API client should do. The rate limits at every tier are higher than the Claude rate limits, so even if you prefer using Claude it can be a helpful backup for when you're rate limited, for a pretty low price. Let me know if you have any feedback!
1. paool ◴[29 Aug 25 05:39 UTC] No.45060611[source]▶
how would I point to your API to use in a Mastra ai agent?
replies(1): >>45060781 #
2. reissbaker ◴[29 Aug 25 06:14 UTC] No.45060781[source]▶
I'm not deeply familiar with Mastra, but reading their docs, it looks like they use the Vercel AI SDK — which is great, since Vercel's AI SDK can work with any OpenAI-compatible API, including ours. All you need to do is set a custom API base URL; in our case, that's https://api.synthetic.new/v1

Then just plug in your Synthetic API key, and you should be able to use any supported model. For example, to use GLM-4.5, you'd pass the following model string: "hf:zai-org/GLM-4.5"

The AI SDK docs are here for using custom base URLs: https://ai-sdk.dev/docs/ai-sdk-core/provider-management

You can also join our Discord if you need help! https://synthetic.new/discord should redirect you to our Discord server :)