TL;DR: ClinePass is now my primary LLM API provider - it's been a fantastic buy. Configuration prompts for using ClinePass in Pi and other agents are below.
NOTE: I'm deciding against featherless because of context size limits and other limitations on the lower cost plans see the post below NOTE 2: ClinePass has been a valuable provider. For the near future I will use it as my go-to for inference, and only pay OpenRouter when needed.
Featherless is an interesting LLM API provider. They offer truly unlimited token usage on open source models, for a low yearly fee. If you're not using a high volume of tokens daily, then a pay-per-token plan like Openrouter may end up being cheaper, but if you use a ton of tokens regularly, their offering may be hard to beat for the price: $300 per year for a premium account with 4 concurrent requests ($25/month paid yearly).
That may potentially be a great plan for a single developer who regularly uses high volumes of inference tokens for solo project work. Here's an explanation from the Featherless blog:
https://featherless.ai/blog/llm-api-pricing-comparison-2026-complete-guide-inference-costs
They offer models from:
DeepSeek 4
Qwen 3
Llama 3.1
Mistral
Gemma 3
Kimi K2
GPT OSS
Their 'scale' plan offers 8 concurrent requests for $75 per month, and they can build custom plans for production projects which require greater concurrent usage.