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> models --timeline

Model timeline

Q4 2025Q1 2026Q2 2026Q3 2026
anthropicClaude Haiku 4.52025-10-15Claude Fable 5.12026-09-01Claude Opus 5.52026-09-22Claude Sonnet 5.52026-09-28
openaiGPT-6 Sol2026-09-22

Q3 2026

  1. 2026-09-28anthropicClaude Sonnet 5.5
  2. 2026-09-22anthropicClaude Opus 5.5
  3. 2026-09-22openaiGPT-6 Sol
  4. 2026-09-01anthropicClaude Fable 5.1

Q4 2025

  1. 2025-10-15anthropicClaude Haiku 4.5