https://llmprices.org/changelogLLM API price changes, tracked.https://llmprices.org/changelog2027-01-01Per 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.https://llmprices.org/changelog2026-09-25Flash $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.https://llmprices.org/changelog2026-09-25GPT-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.https://llmprices.org/changelog2026-09-25Launched free JSON API (/api/v1/prices), llms.txt index and FAQ/WebSite structured data.https://llmprices.org/changelog2026-09-24Site 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.https://llmprices.org/changelog2026-09-24Added 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.https://llmprices.org/changelog2026-09-24Per Anthropic docs, the late Opus 4 generation now lists at $5/$25 per MTok — a 67% cut vs Opus 4/4.1 launch pricing.https://llmprices.org/changelog2026-09-24Added 3.1 Pro (tiered ≤/>200k), 3.5/3.1 Flash-Lite, 3.8 Flash TTS and Omni Flash (video ≈$0.10/sec).