AI price changelog

2026-07-11 - Current-generation refresh

Re-verified every rate against each provider's official pricing page on this date (Anthropic, OpenAI) and moved the Claude and OpenAI line-ups to their current generations. List rates per 1,000,000 tokens (input / output):

• Claude Sonnet 5 - $2.00 / $10.00 (Anthropic), replacing Sonnet 4.6. Introductory pricing in effect through 2026-08-31; it returns to the standard $3.00 / $15.00 on 2026-09-01.
• Claude Opus 4.8 - $5.00 / $25.00 (Anthropic), replacing Opus 4.7 (same rate).
• Claude Fable 5 - $10.00 / $50.00 (Anthropic), added as the new top-tier flagship.
• Claude Haiku 4.5 - $1.00 / $5.00 (Anthropic), unchanged.
• GPT-5.6 Sol - $5.00 / $30.00 (OpenAI), replacing GPT-5.5 (same rate) as the flagship.
• GPT-5.6 Terra - $2.50 / $15.00 (OpenAI), replacing GPT-5.4 (same rate).
• GPT-5.6 Luna - $1.00 / $6.00 (OpenAI), added - the cheapest of the new flagship tier.
• GPT-5.4 Mini - $0.75 / $4.50 and GPT-5.4 Nano - $0.20 / $1.25 (OpenAI), unchanged (no 5.6 small model has shipped).
• Gemini line-up unchanged - not re-verified in this pass.

2026-06-03 - Baseline

First published price set for the estimator. List rates per 1,000,000 tokens (input / output), verified against each provider's pricing page on this date:

• Claude Haiku 4.5 - $1.00 / $5.00 (Anthropic)
• Claude Sonnet 4.6 - $3.00 / $15.00 (Anthropic)
• Claude Opus 4.7 - $5.00 / $25.00 (Anthropic)
• GPT-5.4 Nano - $0.20 / $1.25 (OpenAI)
• GPT-5.4 Mini - $0.75 / $4.50 (OpenAI)
• GPT-5.4 - $2.50 / $15.00 (OpenAI)
• GPT-5.5 - $5.00 / $30.00 (OpenAI)
• Gemini 2.5 Flash-Lite - $0.10 / $0.40 (Google)
• Gemini 2.5 Flash - $0.30 / $2.50 (Google)
• Gemini 3.1 Pro - $2.00 / $12.00 (Google)

Future entries land at the top of this list. When a provider changes a price or ships a new model, the estimator updates and the move gets a dated line here.