LLM Price Volatility
Tracking the exponential price decay of frontier AI model APIs — dollar per million tokens, from GPT-3 to GPT-4.1 nano.
What You're Seeing
This chart tracks the input price per million tokens for frontier AI models from 2021 to present. The Y-axis uses a logarithmic scale — each gridline represents a 10x price difference.
Two patterns emerge: exponential decay as compute costs fall, and sudden step drops when new model generations launch. GPT-3 Davinci cost $20/1M tokens in 2021. GPT-4.1 nano costs $0.10 in 2025 — a 200x reduction in four years.
The chart updates weekly. Data sourced from official provider pricing pages, launch announcements, and llm-prices.com.
Methodology
Prices shown are list API prices (no volume discounts, no cached-input pricing). Input pricing is the default view — output pricing is typically 2-4x higher. All prices are USD per million tokens.
For open-weight models (Llama), we track hosted API pricing via Together AI as a representative provider. Actual costs vary by provider.
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