RETIRING IN 310 DAYS
Sunset scheduled for 2027-09-18, published in the provider's own documentation. The identifier still resolves today.
state=dying sunset=2027-09-18 days_remaining=310 severity=high sources=anthropic,docs,litellm evidence_tier=endpoint confirmed_by_endpoint=anthropic documented_by_provider=docs replacement=none corroborated=yes divergent_fields=none checked=2026-11-12 17:39Z
anthropic/claude-opus-5-5
Vendor: anthropic. Tracked by 3 of 5 sources.
What each source reports
| Source | ID | Context | Max out | In $/Mtok | Out $/Mtok | Sunset |
|---|---|---|---|---|---|---|
| anthropic native | claude-opus-5-5 | 1,000,000 | 128,000 | — | — | — |
| docs | claude-opus-5-5 | — | — | — | — | 2027-09-22 |
| litellm | azure_ai/claude-opus-5-5 | 1,000,000 | 128,000 | $4 | $20 | 2027-09-18 |
Change history
| Severity | Change | What | Detected |
|---|---|---|---|
| low | added | new model bedrock/claude_platform/claude-opus-5-5 (1,000,000 ctx) | 2026-10-24 |
| low | added | new model claude-opus-5-5 | 2026-10-21 |
| medium | deprecated | claude-opus-5-5: retires 2027-09-22 (in 336 days) | 2026-10-21 |
| low | modified | claude-opus-5-5: capabilities gained web_search | 2026-10-08 |
| medium | deprecated | azure_ai/claude-opus-5-5: deprecation announced for 2027-09-18 — in 346 days | 2026-10-07 |
| medium | deprecated | azure_ai/claude-opus-5-5: retires 2027-09-18 (in 346 days) | 2026-10-07 |
| low | modified | claude-opus-5-5: capabilities gained server_tools | 2026-10-06 |
| info | repriced | anthropic.claude-opus-5-5: input_price_per_mtok $4.40/Mtok to $4.00/Mtok | 2026-09-24 |
| info | repriced | anthropic.claude-opus-5-5: output_price_per_mtok $22.00/Mtok to $20.00/Mtok | 2026-09-24 |
| info | repriced | anthropic.claude-opus-5-5: cache_read_price_per_mtok $0.22/Mtok to $0.20/Mtok | 2026-09-24 |
| low | repriced | anthropic.claude-opus-5-5: input_price_per_mtok $4.00/Mtok to $4.40/Mtok | 2026-09-24 |
| low | repriced | anthropic.claude-opus-5-5: output_price_per_mtok $20.00/Mtok to $22.00/Mtok | 2026-09-24 |
| low | repriced | anthropic.claude-opus-5-5: cache_read_price_per_mtok $0.20/Mtok to $0.22/Mtok | 2026-09-24 |
| low | added | new model apac.anthropic.claude-opus-5-5 (1,000,000 ctx) | 2026-09-24 |
| low | added | new model azure_ai/claude-opus-5-5 (1,000,000 ctx) | 2026-09-23 |
| low | added | new model anthropic.claude-opus-5-5 (1,000,000 ctx) | 2026-09-23 |
| low | added | new model au.anthropic.claude-opus-5-5 (1,000,000 ctx) | 2026-09-23 |
| low | added | new model eu.anthropic.claude-opus-5-5 (1,000,000 ctx) | 2026-09-23 |
| low | added | new model global.anthropic.claude-opus-5-5 (1,000,000 ctx) | 2026-09-23 |
| low | added | new model jp.anthropic.claude-opus-5-5 (1,000,000 ctx) | 2026-09-23 |
| low | added | new model us.anthropic.claude-opus-5-5 (1,000,000 ctx) | 2026-09-23 |
| low | added | new model vertex_ai/claude-opus-5-5 (1,000,000 ctx) | 2026-09-23 |
| low | added | new model claude-opus-5-5 (1,000,000 ctx) | 2026-09-22 |
| low | added | new model claude-opus-5-5 (1,000,000 ctx) | 2026-09-22 |