This week in AI models: Week 37, 2026

September 7, 2026 to September 13, 2026. Every line traces to the model tracker's source data.

Deprecation updates (19)

Model	Provider	Status	Replacement
claude-1.0	Anthropic	shut down November 6, 2024	claude-haiku-4-5-20251001
claude-1.1	Anthropic	shut down November 6, 2024	claude-haiku-4-5-20251001
claude-1.2	Anthropic	shut down November 6, 2024	claude-haiku-4-5-20251001
claude-1.3	Anthropic	shut down November 6, 2024	claude-haiku-4-5-20251001
claude-instant-1.0	Anthropic	shut down November 6, 2024	claude-haiku-4-5-20251001
claude-instant-1.1	Anthropic	shut down November 6, 2024	claude-haiku-4-5-20251001
claude-instant-1.2	Anthropic	shut down November 6, 2024	claude-haiku-4-5-20251001
claude-2.0	Anthropic	shut down July 21, 2025	claude-opus-4-8
claude-2.1	Anthropic	shut down July 21, 2025	claude-opus-4-8
claude-3-sonnet-20240229	Anthropic	shut down July 21, 2025	claude-sonnet-4-6
claude-3-5-sonnet-20240620	Anthropic	shut down October 28, 2025	claude-sonnet-4-6
claude-3-5-sonnet-20241022	Anthropic	shut down October 28, 2025	claude-sonnet-4-6
claude-3-opus-20240229	Anthropic	shut down January 5, 2026	claude-opus-4-8
claude-3-5-haiku-20241022	Anthropic	shut down February 19, 2026	claude-haiku-4-5-20251001
claude-3-7-sonnet-20250219	Anthropic	shut down February 19, 2026	claude-sonnet-4-6
claude-3-haiku-20240307	Anthropic	shut down April 20, 2026	claude-haiku-4-5-20251001
claude-opus-4-20250514	Anthropic	shut down June 15, 2026	claude-opus-4-8
claude-sonnet-4-20250514	Anthropic	shut down June 15, 2026	claude-sonnet-4-6
claude-opus-4-1-20250805	Anthropic	shut down August 5, 2026	claude-opus-4-8

Dated shutdown calendar: deprecations page.