Claude Instant 1.x Deprecation, Shutdown Dates & Migration Guide
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Synced 2026-11-12 UTC · 3 variants · 1 ecosystems
Track confirmed UTC deprecation and shutdown dates for Claude Instant 1.x (Anthropic) across Anthropic. Preview claude-instant-1.2 → claude-haiku-4-5-20251001 upgrades locally below, audit full configs in the Model Config Auditor, or benchmark token pricing in DevToken.
Tracked Variants
3
Earliest Upcoming EOL
2024-11-06
Recommended Upgrade
claude-haiku-4-5-20251001
Ecosystems Covered
Anthropic
1. Quick .env & SDK Snippet Replacement Matcher
Edit or paste your .env assignment, LiteLLM route, or SDK model identifier below to check live 3-state EOL status and copy a ready-to-apply replacement diff locally in your browser.
Replacement Diff Preview (claude-instant-1.2 → claude-haiku-4-5-20251001)
# ANTHROPIC_MODEL: claude-instant-1.2 -> claude-haiku-4-5-20251001 [RETIRED · EOL 2024-11-06]
- ANTHROPIC_MODEL="claude-instant-1.2"
+ ANTHROPIC_MODEL="claude-haiku-4-5-20251001"
# model: claude-instant-1.2 -> claude-haiku-4-5-20251001 [RETIRED · EOL 2024-11-06]
- model: anthropic/claude-instant-1.2
+ model: anthropic/claude-haiku-4-5-202510012. Cross-Ecosystem Claude Instant 1.x Lifecycle Matrix (3)
Direct vendor APIs and cloud platforms retire dated snapshots on independent schedules. Verify the exact model ID, vendor lifecycle stage, and UTC shutdown date matching your deployment.
| Model ID | Provider | Calculated Status | Confirmed Shutdown (UTC) | Vendor Lifecycle | Replacement & Migration | Source |
|---|---|---|---|---|---|---|
claude-instant-1.0 |
Anthropic | RETIRED | 2024-11-06736d ago | Deprecated | Docs ↗ | |
claude-instant-1.1 |
Anthropic | RETIRED | 2024-11-06736d ago | Deprecated | Docs ↗ | |
claude-instant-1.2 |
Anthropic | RETIRED | 2024-11-06736d ago | Deprecated | Docs ↗ |
3. Production Migration Checklist (claude-instant-1.2 → claude-haiku-4-5-20251001)
Follow this deterministic engineering sequence before retiring pinned snapshots in production services and SDK clients:
- Inventory pinned model IDs: Search repositories and deployment manifests for
ANTHROPIC_MODEL,anthropic/LiteLLM routes, and dated snapshot strings in the Claude Instant 1.x family (0 deprecated, 3 retired, 0 active variants tracked). - Benchmark successor quality & token pricing: Validate structured output schemas, tool-calling payloads, and latency against
claude-haiku-4-5-20251001, then compare input, output, and cached token rates in DevToken. - Enforce keyless CI guardrails: Wire RSS, Atom, iCal feeds & CI Guard into pull-request checks so retired or deprecated Claude Instant 1.x identifiers cannot re-enter production.
4. Related Anthropic & Ecosystem Migration Guides
Compare sibling model families or inspect full provider-level schedules across every ecosystem hosting this family:
Claude 3.7 Sonnet
DEPRECATED (1d)Claude 3.5 Haiku
RETIREDClaude 3 Opus
RETIREDClaude 3 Sonnet
DEPRECATED (1d)Claude 3 Haiku
DEPRECATED (1d)5. Claude Instant 1.x Deprecation & Upgrade FAQ
Is Claude Instant 1.x deprecated or retired across Anthropic?
LLMEOL tracks 3 Claude Instant 1.x variants across Anthropic: 0 deprecated with scheduled shutdowns, 3 retired past their UTC EOL date, and 0 active with no announced shutdown date. Check the cross-ecosystem matrix above for exact snapshot dates.
What is the recommended replacement model when migrating off claude-instant-1.2?
The primary recommended upgrade target for claude-instant-1.2 is claude-haiku-4-5-20251001. Always test prompt formatting, max output tokens, and tool schemas on claude-haiku-4-5-20251001, and compare token pricing in DevToken before switching production traffic.
How can I replace claude-instant-1.2 in .env and LiteLLM configs safely?
Paste your ANTHROPIC_MODEL assignment or LiteLLM model block into the Quick Replacement Matcher on this page to generate an exact diff, or open the full Local Model Config Auditor to scan multi-service manifests with zero network upload.