LLM API pricing, verified Oct 20, 2026

Know the bill.
Before you ship.

Compare 39 models from 7 providers. Enter your traffic and see what every API really costs per month.

39models
7providers
100%from official pages
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ModelInputCachedOutputContextMonthly

Prices per 1M tokens, standard tier. Excludes batch discounts, long-context surcharges, tool fees and taxes. Reasoning tokens bill as output. Always confirm on the provider's page.

Cheapest for a typical chatbot. At 100K requests a month.

1,000 input and 500 output tokens per request.

Groq

GPT-OSS 20B on Groq

$22.50 /month
OpenAI

GPT-5 nano

$25.00 /month
Google Gemini

Gemini 2.5 Flash-Lite

$30.00 /month
OpenAI

GPT-6 Luna

$35.00 /month
Anthropic

Claude Haiku 5.5

$35.00 /month
OpenAI

GPT-4o mini

$45.00 /month

Head to head.

Anthropic vs OpenAI

Claude Opus 5.5 vs GPT-6 Astra

Anthropic vs OpenAI

Claude Sonnet 5.5 vs GPT-6.1 Sol

Anthropic vs Google Gemini

Claude Sonnet 5.5 vs Gemini 4 Argon

OpenAI vs Google Gemini

GPT-6.1 Sol vs Gemini 4 Argon

Anthropic vs OpenAI

Claude Haiku 5.5 vs GPT-6 Luna

OpenAI vs Google Gemini

GPT-6 Luna vs Gemini 2.5 Flash-Lite

All comparisons →

Guides.

The cheapest LLM APIs right now

Ranked by real monthly cost, not headline price. Checked Oct 20, 2026.

Cheapest LLM API for a chatbot

What a customer-support or chat assistant costs on each model.

Cheapest LLM API for coding agents

Agents re-send big contexts. Here's what that costs.