OpenAI GPT-4 pricing changed: input $0.03 → $0.06/M. 47m Google Gemini Gemini 3.1 Flash TTS Preview lifecycle transition: preview → GA. 53m Anthropic Claude Haiku 3.5 lifecycle transition: retired → active. 1h Anthropic Claude Sonnet 4.6 pricing observed change: $3/1M in, $15/1M out… 1h Anthropic Claude Sonnet 4.5 pricing observed change: $3/1M in, $15/1M out… 1h Anthropic Claude Sonnet 4 (retired, except on Bedrock and Google Cloud) p… 1h Anthropic Claude Haiku 4.5 pricing observed change: $1/1M in, $5/1M out,… 1h Anthropic Claude Haiku 3.5 (retired, except on Bedrock and Google Cloud)… 1h Anthropic Claude Mythos 5 pricing observed change: $10/1M in, $50/1M out,… 1h Anthropic Claude Opus 4.8 pricing observed change: $5/1M in, $25/1M out,… 1h Anthropic Claude Opus 4.7 pricing observed change: $5/1M in, $25/1M out,… 1h Anthropic Claude Opus 4.6 pricing observed change: $5/1M in, $25/1M out,… 1h Anthropic Claude Opus 4.5 pricing observed change: $5/1M in, $25/1M out,… 1h Anthropic Claude Sonnet 5 pricing observed change: $2/1M in, $10/1M out,… 1h OpenAI GPT-4 added function calling support. 11h Google Gemini Gemini 2.5 Pro Preview TTS lifecycle transition: preview → GA. 11h
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Every model launch, deprecation, pricing change, and API shift across the major AI providers. Each entry links back to its primary source.

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