# Migrating off claude-instant-1.1

**Anthropic** retires **claude-instant-1.1** on **2024-11-06**.
Documented replacement: **claude-haiku-4-5-20251001**.

Source: https://docs.anthropic.com/en/docs/about-claude/model-deprecations
Source check date not recorded.
Calendar as of 2026-09-15 UTC.

| Model | Provider | Retires | Replacement |
|---|---|---|---|
| claude-instant-1.1 | Anthropic | 2024-11-06 | claude-haiku-4-5-20251001 |

Also retiring on 2024-11-06:
- claude-1.0 (Anthropic) → claude-haiku-4-5-20251001
- claude-1.1 (Anthropic) → claude-haiku-4-5-20251001
- claude-1.2 (Anthropic) → claude-haiku-4-5-20251001
- claude-1.3 (Anthropic) → claude-haiku-4-5-20251001
- claude-instant-1.0 (Anthropic) → claude-haiku-4-5-20251001
- claude-instant-1.2 (Anthropic) → claude-haiku-4-5-20251001

Source: https://llmlatency.dev/migrate/anthropic-claude-instant-1-1