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PRICES

LLM API Prices

What 400+ AI models cost per million tokens, input and output, cheapest first, with every price change our readings have caught. From OpenRouter’s public model list, read every 6 hours.

Models priced444on OpenRouter
Cheapest paid$0.029input $/1M, Mistral: Mistral Nemo
Free to use17models at $0
Price changes0seen since tracking began

All models

Read (1 h ago); read every 6 hours.
AI models and their prices per million tokens
ModelInput $/1MOutput $/1MContext
Mistral: Mistral Nemomistralai/mistral-nemo$0.029$0.03131K
ScaleDown: Extractscaledown/extract$0.04Free1M
ScaleDown: Summarizescaledown/summarize$0.04Free1M
inclusionAI: Ling 3.0 Flashinclusionai/ling-3.0-flash$0.021$0.063262K
Sao10K: Llama 3 8B Lunarissao10k/l3-lunaris-8b$0.04$0.058K
Nex AGI: Nex-N2.5-Mininex-agi/nex-n2.5-mini$0.025$0.1262K
Z.ai: GLM 5.3 Flashz-ai/glm-5.3-flash$0.0285$0.09231M
Z.ai: GLM Flash Latest~z-ai/glm-flash-latest$0.0285$0.09231M
OpenAI: gpt-oss-20b (batch)openai/gpt-oss-20b:batch$0.024$0.112131K
OpenAI: gpt-oss-20bopenai/gpt-oss-20b$0.03$0.13131K
Qwen: Qwen3.7 Flashqwen/qwen3.7-flash$0.03$0.131M
OpenAI: gpt-oss-120b (batch)openai/gpt-oss-120b:batch$0.0296$0.136131K
Meta: Llama 3.1 8B Instructmeta-llama/llama-3.1-8b-instruct$0.05$0.08131K
Mistral: Mistral Small 3mistralai/mistral-small-24b-instruct-2501$0.05$0.0833K
Inference.net: Schematron V2 Turboinference-net/schematron-v2-turbo$0.03$0.15128K
Google: Gemma 4 26B A4Bgoogle/gemma-4-26b-a4b-it$0.04$0.121262K
Amazon: Nova Micro 1.0amazon/nova-micro-v1$0.035$0.14128K
Google: Gemma 3 4Bgoogle/gemma-3-4b-it$0.05$0.1131K
Cohere: Command R7B (12-2024)cohere/command-r7b-12-2024$0.0375$0.15128K
Inception: Mercury 2.5inception/mercury-2.5$0.04$0.15260K
OpenAI: GPT-5 Nano (batch)openai/gpt-5-nano:batch$0.025$0.2400K
Meta: Llama 3.2 1B Instructmeta-llama/llama-3.2-1b-instruct$0.027$0.20160K
DeepSeek: DeepSeek V4.1 Flash (batch)deepseek/deepseek-v4.1-flash:batch$0.05$0.151M
Google: Gemma 3 12Bgoogle/gemma-3-12b-it$0.05$0.15131K

Price changes

Every change our readings have caught, newest first.

No price has changed since tracking began. When one does, it is listed here with the old and the new price.

How this page works, and questions

Prices come from OpenRouter’s public model list, which our server reads every 6 hours. OpenRouter resells many providers’ models; its price is usually the provider’s own list price, but a provider’s direct price, volume discounts and cached-token prices can differ. Each model name opens its OpenRouter page.

Prices are in US dollars per million tokens. A token is a piece of a word: a million tokens is roughly 750,000 English words. Input is what you send the model, output what it writes back. “Cheapest” orders by a 3:1 mix of input and output, the usual mix of a chat.

A price change is listed when one of our readings differs from the one before. Changes between two readings are seen at the next one.

What is the cheapest AI model API?

In our last reading the cheapest paid model by a 3:1 input-to-output mix was Mistral: Mistral Nemo, at $0.029 per million input tokens and $0.03 per million output tokens. Free models usually have strict limits.

Why is output dearer than input?

Writing each token takes the model more work than reading one, so most providers charge several times more for output.

How do I estimate a bill?

Multiply the tokens you send by the input price and the tokens you get back by the output price, each divided by a million. A 1,000-word answer is about 1,300 tokens.

Figures come from the public sources named on each page, read by our server on a schedule, and may be a few minutes or hours old. Nothing here is investment advice; see the risk disclaimer.