What is the cheapest LLM API?

26 models are available for free. Among paid models, inclusionAI: Ling-2.6-flash is cheapest at $0.01 per 1M input tokens.

How is LLM API pricing calculated?

Most LLM APIs charge per token, with separate rates for input (prompt) and output (completion) tokens — output is usually pricier. Prices on this page are USD per 1M tokens.

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LLM API Pricing Comparison 2026 — Cost per 1M Tokens | AI Tier List

LLM API Pricing Comparison

We currently track pricing for 345 models: 26 are free, the cheapest paid model is inclusionAI: Ling-2.6-flash at $0.01 per 1M input tokens, and the most expensive is OpenAI: o1-pro at $150. Refreshed weekly.

Model	Author	Input $/1M	Output $/1M	Context
OpenRouter: Fusion	openrouter	$-1000000.00	$-1000000.00	1M
Auto Router	openrouter	$-1000000.00	$-1000000.00	2M
Body Builder (beta)	openrouter	$-1000000.00	$-1000000.00	128K
Pareto Code Router

LLM API Pricing Comparison

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