RETIRING IN 13 DAYS
Sunset scheduled for 2026-09-29, reported by a third-party catalog. The identifier still resolves today. Sources disagree on: context_tokens.
state=dying sunset=2026-09-29 days_remaining=13 severity=critical sources=anthropic,litellm evidence_tier=endpoint confirmed_by_endpoint=anthropic documented_by_provider=false replacement=none corroborated=yes divergent_fields=context_tokens checked=2026-09-16 03:02Z
anthropic/claude-sonnet-4-5-20250929
Vendor: anthropic. Tracked by 2 of 5 sources.
What each source reports
| Source | ID | Context | Max out | In $/Mtok | Out $/Mtok | Sunset |
|---|---|---|---|---|---|---|
| anthropic native | claude-sonnet-4-5-20250929 | 1,000,000 | 64,000 | — | — | — |
| litellm | claude-sonnet-4-5-20250929 | 200,000 | 64,000 | $3 | $15 | 2026-09-29 |
Change history
| Severity | Change | What | Detected |
|---|---|---|---|
| high | deprecated | claude-sonnet-4-5-20250929: deprecation announced for 2026-09-29 — in 39 days | 2026-08-21 |
| high | deprecated | claude-sonnet-4-5-20250929: retires 2026-09-29 (in 39 days) | 2026-08-21 |
| low | modified | bedrock/us-gov-east-1/claude-sonnet-4-5-20250929-v1:0: capabilities gained tool_search | 2026-08-12 |
| low | modified | bedrock/us-gov-west-1/claude-sonnet-4-5-20250929-v1:0: capabilities gained tool_search | 2026-08-12 |
| low | modified | claude-sonnet-4-5-20250929-v1:0: capabilities gained tool_search | 2026-08-12 |
| low | modified | anthropic.claude-sonnet-4-5-20250929-v1:0: capabilities gained tool_search | 2026-08-12 |
| low | modified | au.anthropic.claude-sonnet-4-5-20250929-v1:0: capabilities gained tool_search | 2026-08-12 |
| low | modified | eu.anthropic.claude-sonnet-4-5-20250929-v1:0: capabilities gained tool_search | 2026-08-12 |
| low | modified | global.anthropic.claude-sonnet-4-5-20250929-v1:0: capabilities gained tool_search | 2026-08-12 |
| low | modified | jp.anthropic.claude-sonnet-4-5-20250929-v1:0: capabilities gained tool_search | 2026-08-12 |
| low | modified | us.anthropic.claude-sonnet-4-5-20250929-v1:0: capabilities gained tool_search | 2026-08-12 |
| low | modified | claude-sonnet-4-5-20250929: capabilities gained native_structured_output | 2026-07-14 |
| low | modified | bedrock/us-gov-east-1/claude-sonnet-4-5-20250929-v1:0: capabilities gained parallel_tool_use_config | 2026-07-02 |
| low | modified | bedrock/us-gov-west-1/claude-sonnet-4-5-20250929-v1:0: capabilities gained parallel_tool_use_config | 2026-07-02 |
| low | modified | claude-sonnet-4-5-20250929-v1:0: capabilities gained parallel_tool_use_config | 2026-07-02 |
| low | modified | anthropic.claude-sonnet-4-5-20250929-v1:0: capabilities gained parallel_tool_use_config | 2026-07-02 |
| low | modified | au.anthropic.claude-sonnet-4-5-20250929-v1:0: capabilities gained parallel_tool_use_config | 2026-07-02 |
| low | modified | eu.anthropic.claude-sonnet-4-5-20250929-v1:0: capabilities gained parallel_tool_use_config | 2026-07-02 |
| low | modified | global.anthropic.claude-sonnet-4-5-20250929-v1:0: capabilities gained parallel_tool_use_config | 2026-07-02 |
| low | modified | jp.anthropic.claude-sonnet-4-5-20250929-v1:0: capabilities gained parallel_tool_use_config | 2026-07-02 |
| low | modified | us.anthropic.claude-sonnet-4-5-20250929-v1:0: capabilities gained parallel_tool_use_config | 2026-07-02 |
| low | repriced | bedrock/us-gov-east-1/claude-sonnet-4-5-20250929-v1:0: input_price_per_mtok $3.30/Mtok to $3.60/Mtok | 2026-06-02 |
| low | repriced | bedrock/us-gov-east-1/claude-sonnet-4-5-20250929-v1:0: output_price_per_mtok $16.50/Mtok to $18.00/Mtok | 2026-06-02 |
| low | repriced | bedrock/us-gov-east-1/claude-sonnet-4-5-20250929-v1:0: cache_read_price_per_mtok $0.33/Mtok to $0.36/Mtok | 2026-06-02 |
| low | repriced | bedrock/us-gov-west-1/claude-sonnet-4-5-20250929-v1:0: input_price_per_mtok $3.30/Mtok to $3.60/Mtok | 2026-06-02 |
| low | repriced | bedrock/us-gov-west-1/claude-sonnet-4-5-20250929-v1:0: output_price_per_mtok $16.50/Mtok to $18.00/Mtok | 2026-06-02 |
| low | repriced | bedrock/us-gov-west-1/claude-sonnet-4-5-20250929-v1:0: cache_read_price_per_mtok $0.33/Mtok to $0.36/Mtok | 2026-06-02 |