Guides for building with AI models
Pricing breakdowns, how-tos and comparisons from the Solo Router team.
The cheapest LLM APIs right now (price per million tokens)
The cheapest LLM APIs on Solo Router ranked by price per million tokens, with advice on when a cheap model is good enough and when to pay for a bigger one.
DeepSeek API pricing explained (with real cost examples)
How DeepSeek API pricing works per million tokens, what cached tokens and reasoning tokens cost, and what a typical chat or coding request costs on Solo Router.
Free LLM API options in 2026 (and their limits)
Where to get a free LLM API in 2026: free credits, free tiers and free models, plus the catches (rate limits, data use, model choice) and when paying a little is better.
How to get a DeepSeek API key (2026 guide)
Two ways to get DeepSeek API access in 2026: directly from DeepSeek, or through a router like Solo Router with one key for every model. Step by step, with code.
OpenRouter pricing explained, and how Solo Router compares
How OpenRouter pricing works (pass-through model prices plus a fee on credit purchases), what to watch for, and how Solo Router's one-price-per-model approach compares.