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Claude 2.1, Claude 2.0 & Claude 1.x Deprecation, Shutdown Dates & Migration Guide

Runs locally in your browser — 0 bytes uploaded Synced 2026-11-12 UTC · 6 variants · 1 ecosystems

Track confirmed UTC deprecation and shutdown dates for Claude 2.1, Claude 2.0 & Claude 1.x (Anthropic) across Anthropic. Preview claude-2.1 → claude-opus-4-8 upgrades locally below, audit full configs in the Model Config Auditor, or benchmark token pricing in DevToken.

Tracked Variants 6
Earliest Upcoming EOL 2025-07-21
Recommended Upgrade claude-opus-4-8
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.

2 of 2 configured models need migration
Full .env Auditor → Compare claude-opus-4-8 Cost in DevToken →

Replacement Diff Preview (claude-2.1 → claude-opus-4-8)

# ANTHROPIC_MODEL: claude-2.1 -> claude-opus-4-8 [RETIRED · EOL 2025-07-21]
- ANTHROPIC_MODEL="claude-2.1"
+ ANTHROPIC_MODEL="claude-opus-4-8"

# model: claude-2.1 -> claude-opus-4-8 [RETIRED · EOL 2025-07-21]
- model: anthropic/claude-2.1
+ model: anthropic/claude-opus-4-8

2. Cross-Ecosystem Claude 2.1, Claude 2.0 & Claude 1.x Lifecycle Matrix (6)

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.

Claude 2.1, Claude 2.0 & Claude 1.x lifecycle status, UTC shutdown dates, and replacement models across Anthropic
Model ID Provider Calculated Status Confirmed Shutdown (UTC) Vendor Lifecycle Replacement & Migration Source
claude-2.0 Anthropic RETIRED 2025-07-21479d ago Deprecated
claude-opus-4-8 Cost → Audit →
Docs ↗
claude-2.1 Anthropic RETIRED 2025-07-21479d ago Deprecated
claude-opus-4-8 Cost → Audit →
Docs ↗
claude-1.0 Anthropic RETIRED 2024-11-06736d ago Deprecated
claude-haiku-4-5-20251001 Cost → Audit →
Docs ↗
claude-1.1 Anthropic RETIRED 2024-11-06736d ago Deprecated
claude-haiku-4-5-20251001 Cost → Audit →
Docs ↗
claude-1.2 Anthropic RETIRED 2024-11-06736d ago Deprecated
claude-haiku-4-5-20251001 Cost → Audit →
Docs ↗
claude-1.3 Anthropic RETIRED 2024-11-06736d ago Deprecated
claude-haiku-4-5-20251001 Cost → Audit →
Docs ↗

3. Production Migration Checklist (claude-2.1 → claude-opus-4-8)

Follow this deterministic engineering sequence before retiring pinned snapshots in production services and SDK clients:

  1. Inventory pinned model IDs: Search repositories and deployment manifests for ANTHROPIC_MODEL, anthropic/ LiteLLM routes, and dated snapshot strings in the Claude 2.1, Claude 2.0 & Claude 1.x family (0 deprecated, 6 retired, 0 active variants tracked).
  2. Benchmark successor quality & token pricing: Validate structured output schemas, tool-calling payloads, and latency against claude-opus-4-8, then compare input, output, and cached token rates in DevToken.
  3. Enforce keyless CI guardrails: Wire RSS, Atom, iCal feeds & CI Guard into pull-request checks so retired or deprecated Claude 2.1, Claude 2.0 & Claude 1.x identifiers cannot re-enter production.

Compare sibling model families or inspect full provider-level schedules across every ecosystem hosting this family:

Claude 3 Haiku

DEPRECATED (1d)
Anthropic · 3 tracked IDs · 3 ecosystems Anthropic, Google Vertex AI, AWS Bedrock Upgrade: claude-haiku-4-5-20251001 Earliest EOL: 2026-11-13
Migration Guide → Cost →

5. Claude 2.1, Claude 2.0 & Claude 1.x Deprecation & Upgrade FAQ

Is Claude 2.1, Claude 2.0 & Claude 1.x deprecated or retired across Anthropic?

LLMEOL tracks 6 Claude 2.1, Claude 2.0 & Claude 1.x variants across Anthropic: 0 deprecated with scheduled shutdowns, 6 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-2.1?

The primary recommended upgrade target for claude-2.1 is claude-opus-4-8. Always test prompt formatting, max output tokens, and tool schemas on claude-opus-4-8, and compare token pricing in DevToken before switching production traffic.

How can I replace claude-2.1 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.