arcanemachine/claude-model-list.md

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Claude model list

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claude-model-list.md

Claude Model Reference

Last updated: April 30, 2026

Notes

To switch models in Claude Code, use the /model command with your desired model ID.
- Example: /model claude-opus-4-6 (Opus 4.6, 200k context)
Info was LLM-generated.
Deprecation dates are not guaranteed.
Newer models do not use datestamped model IDs

Currently Active Models

Name	Model ID (Date-stamped)	Alias	Released	Active Support Until
Claude Opus 4.7	`claude-opus-4-7`	`claude-opus-4-7`	Apr 16, 2026	Apr 16, 2027
Claude Sonnet 4.6	`claude-sonnet-4-6`	`claude-sonnet-4-6`	Feb 17, 2026	Feb 17, 2027
Claude Opus 4.6	`claude-opus-4-6`	`claude-opus-4-6`	Feb 5, 2026	Feb 5, 2027
Claude Opus 4.5	`claude-opus-4-5-20251101`	`claude-opus-4-5`	Nov 24, 2025	Nov 24, 2026
Claude Haiku 4.5	`claude-haiku-4-5-20251001`	`claude-haiku-4-5`	Oct 15, 2025	Oct 15, 2026
Claude Sonnet 4.5	`claude-sonnet-4-5-20250929`	`claude-sonnet-4-5`	Sep 29, 2025	Sep 29, 2026
Claude Opus 4.1	`claude-opus-4-1-20250805`	`claude-opus-4-1`	Aug 5, 2025	Aug 5, 2026

Deprecated Models (Still Accessible)

Name	Model ID (Date-stamped)	Alias	Released	Deprecated	Retiring	Successor
Claude Opus 4.0	`claude-opus-4-20250514`	`claude-opus-4-0`	May 22, 2025	Apr 14, 2026	Jun 15, 2026	`claude-opus-4-7`
Claude Sonnet 4.0	`claude-sonnet-4-20250514`	`claude-sonnet-4-0`	May 22, 2025	Apr 14, 2026	Jun 15, 2026	`claude-sonnet-4-6`

Retired Models (No Longer Available)

Claude 3.x Series

Name	Model ID	Released	Deprecated	Retired	Successor
Claude Sonnet 3.7	`claude-3-7-sonnet-20250219`	Feb 24, 2025	Oct 28, 2025	Feb 19, 2026	`claude-sonnet-4-6`
Claude Haiku 3.5	`claude-3-5-haiku-20241022`	Oct 22, 2024	Dec 19, 2025	Feb 19, 2026	`claude-haiku-4-5`
Claude Sonnet 3.5 v2	`claude-3-5-sonnet-20241022`	Oct 22, 2024	Aug 13, 2025	Oct 28, 2025	`claude-sonnet-4-6`
Claude Sonnet 3.5	`claude-3-5-sonnet-20240620`	Jun 21, 2024	Aug 13, 2025	Oct 28, 2025	`claude-sonnet-4-6`
Claude Haiku 3	`claude-3-haiku-20240307`	Mar 13, 2024	Feb 19, 2026	Apr 20, 2026	`claude-haiku-4-5`
Claude Opus 3	`claude-3-opus-20240229`	Mar 4, 2024	Jun 30, 2025	Jan 5, 2026	`claude-opus-4-7`
Claude Sonnet 3	`claude-3-sonnet-20240229`	Mar 4, 2024	Jan 21, 2025	Jul 21, 2025	`claude-sonnet-4-6`

Claude 2.x Series

Name	Model ID	Released	Deprecated	Retired	Successor
Claude 2.1	`claude-2.1`	Nov 21, 2023	Jan 21, 2025	Jul 21, 2025	`claude-opus-4-7`
Claude 2.0	`claude-2.0`	Jul 11, 2023	Jan 21, 2025	Jul 21, 2025	`claude-opus-4-7`

Claude 1.x & Instant Series

Name	Model ID	Released	Deprecated	Retired	Successor
Claude Instant 1.2	`claude-instant-1.2`	Aug 9, 2023	Nov 6, 2024	Nov 6, 2024	`claude-haiku-4-5`
Claude 1.3	`claude-1.3`	Apr 18, 2023	Sep 4, 2024	Nov 6, 2024	`claude-haiku-4-5`
Claude Instant 1.1	`claude-instant-1.1`	Mar 31, 2023	Nov 6, 2024	Nov 6, 2024	`claude-haiku-4-5`
Claude 1.2	`claude-1.2`	Mar 14, 2023	Sep 4, 2024	Nov 6, 2024	`claude-haiku-4-5`
Claude 1.1	`claude-1.1`	Mar 14, 2023	Sep 4, 2024	Nov 6, 2024	`claude-haiku-4-5`
Claude Instant 1.0	`claude-instant-1.0`	Mar 14, 2023	Nov 6, 2024	Nov 6, 2024	`claude-haiku-4-5`
Claude 1.0	`claude-1.0`	Mar 14, 2023	Sep 4, 2024	Nov 6, 2024	`claude-haiku-4-5`

Cloud Provider Model IDs

Model	AWS Bedrock	GCP Vertex AI
Claude Opus 4.5	`anthropic.claude-opus-4-5-20251101-v1:0`	`claude-opus-4-5@20251101`
Claude Haiku 4.5	`anthropic.claude-haiku-4-5-20251001-v1:0`	`claude-haiku-4-5@20251001`
Claude Sonnet 4.5	`anthropic.claude-sonnet-4-5-20250929-v1:0`	`claude-sonnet-4-5@20250929`
Claude Opus 4.1	`anthropic.claude-opus-4-1-20250805-v1:0`	`claude-opus-4-1@20250805`

Model Lifecycle Policy

Active: Fully supported, recommended for use
Deprecated: Still accessible but will be retired; migrate to successor
Retired: No longer available via API

Anthropic provides at least 60 days notice before retiring publicly released models.

Sources

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