Price Changelog
Every model addition and price change we track, with official sources. Subscribe via RSS. Upcoming changes are flagged.
Gemini 3.x promo expires: prices double (+100%) +100%
Per Google's official pricing page, promotional rates for Gemini 3.6/3.7/3.8 Flash double on Jan 1, 2027: $0.75/$3.75 → $1.50/$7.50. (0.75/3.75 → 1.50/7.50 per 1M)
DeepSeek added (Flash + V4 Pro)
Flash $0.30/$1.20 and V4 Pro $1.32/$3.96 at peak, with off-peak 50% discounts and cache-hit input at $0.006/$0.044.
GPT-6 family added (+7 models)
GPT-6 Astra ($10/$50), Sol ($2/$10), Luna ($0.10/$0.50), plus GPT-5.6 Sol/Cyber, 5.3 Codex and Rosalind Research. Batch = 50%, Priority = 2x.
Public API + llms.txt
Launched free JSON API (/api/v1/prices), llms.txt index and FAQ/WebSite structured data.
LLMPrices.org launched
Site launched with Gemini 3.8/3.7/3.6 Flash and Claude Opus 5, Sonnet 5, Opus 4, Sonnet 4 pricing, tracked from official docs.
Anthropic lineup completed (+9 models)
Added Opus 5.5 ($4/$20), Fable 5.1 and Mythos 5.1 ($10/$50), Haiku 4.5 ($1/$5), and the Opus 4.5–4.8 / Sonnet 4.5–4.6 line.
Opus 4.5–4.8 repriced: $15/$75 → $5/$25 (-67%) -67%
Per Anthropic docs, the late Opus 4 generation now lists at $5/$25 per MTok — a 67% cut vs Opus 4/4.1 launch pricing. (15/75 → 5/25 per 1M)
Gemini side expanded (+5 models)
Added 3.1 Pro (tiered ≤/>200k), 3.5/3.1 Flash-Lite, 3.8 Flash TTS and Omni Flash (video ≈$0.10/sec).