All Changes
MajorAnthropicanthropic-claude-sonnet-5
Sep 28, 2026 (UTC)Claude Sonnet 5.5 released, replacing Sonnet 5
Impact
Migration: Recommended3/5
ImportantGoogle AIgoogle-ai-pricing
Sep 24, 2026 (UTC)Google AI audio pricing doubles starting January 1, 2027
Impact
Cost Impact: HighPublished5/5
MajorGoogle AIgoogle-gemini-3.1-flash-live-preview
Sep 15, 2026 (UTC)Gemini Live pricing page adds 3.8 Live and Extended Thinking models
Impact
Cost Impact: HighMigration: Recommended4/5
MajorDeepSeekdeepseek-deepseek-v4-pro
Sep 11, 2026 (UTC)DeepSeek V4 Pro retirement reversed; API service continues
Impact
Cost Impact: LowMigration: RecommendedPublished3/5
ImportantGoogle AIgoogle-ai-pricing
Sep 8, 2026 (UTC)Google AI pricing update: scheduled price increases effective Jan 1, 2027
Impact
Cost Impact: HighPublished5/5
ImportantOpenAIgpt-6-astra
Sep 3, 2026 (UTC)OpenAI launches GPT-6 Astra with new pricing tiers
Impact
Cost Impact: HighMigration: Required5/5
MajorGoogle AIgemini-3-7-flash
Sep 2, 2026 (UTC)Gemini 3.7 Flash replaced by Gemini 3.8 Flash on pricing page
Impact
Cost Impact: LowMigration: RequiredPublished4/5
MajorAnthropicclaude-haiku-4.5
Sep 1, 2026 (UTC)Anthropic introduces Claude Fable 5.1, replacing Fable 5
Impact
Cost Impact: LowMigration: RecommendedPublished3/5
MajorGoogle AIgemini-3-7-flash
Aug 27, 2026 (UTC)Gemini 3.7 Flash launch with pricing page updates
Impact
Cost Impact: HighMigration: Recommended3/5
MajorAnthropicclaude-code
Aug 14, 2026 (UTC)Anthropic docs page structure update with new model announcements
Impact
Cost Impact: Low3/5
MajorAnthropicclaude-opus-4
Jul 24, 2026 (UTC)Claude Opus 4.8 replaced by Claude Opus 5 in model table
Impact
Migration: RecommendedPublished3/5
MajorGoogle AIgemini-3-5-flash
Jul 21, 2026 (UTC)Google AI adds Gemini 3.6 Flash and 3.5 Flash-Lite models
Impact
Cost Impact: HighMigration: Recommended3/5
MajorAnthropicclaude-sonnet-4
Jul 15, 2026 (UTC)Claude Mythos 5 limited availability launch with platform reordering
Impact
3/5
MajorAnthropicclaude-opus-4
Jul 10, 2026 (UTC)Claude Opus 4.8 migration notice replaces 4.7 reference
Impact
Migration: Recommended3/5
ImportantOpenAIgpt-5.6-sol
Jul 9, 2026 (UTC)OpenAI launched GPT-5.6 Sol, Terra, and Luna
Impact
Cost Impact: HighMigration: RecommendedPublished5/5
MajorAnthropicclaude-opus-4
Jul 1, 2026 (UTC)Anthropic adds Claude Opus 4.8, Sonnet 5, Haiku 4.5 to models table with pricing
Impact
Cost Impact: HighMigration: Recommended3/5
MajorAnthropicclaude-opus-4
Jun 30, 2026 (UTC)Claude Sonnet 5 replaces Sonnet 4.6 with new pricing and features
Impact
Cost Impact: HighMigration: Recommended3/5
MajorGoogle AIgemini-3.1-flash-lite
Jun 30, 2026 (UTC)Google AI adds Gemini Omni Flash Preview video model with per-second billing
Impact
Cost Impact: Low3/5
ImportantAnthropicclaude-sonnet-5
Jun 30, 2026 (UTC)Anthropic launched Claude Sonnet 5 with introductory API pricing
Impact
Cost Impact: HighMigration: RecommendedPublished5/5
MajorAnthropicclaude-opus-4
Jun 11, 2026 (UTC)Claude Opus 4.8 removed from models page, Fable 5 and Mythos 5 added
Impact
Cost Impact: LowMigration: Required4/5