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| observed_at | 2026-10-10T05:52:55.068Z |
|---|---|
| origin_date | null |
| status | 200 |
| final URL | https://platform.claude.com/docs/en/about-claude/model-deprecations.md |
| etag | null |
| last-modified | null |
| date | Sat, 10 Oct 2026 05:52:55 GMT |
| age | null |
| cache-control | private, no-store |
| cf-cache-status | BYPASS |
| content-encoding | gzip |
| content-length | null |
@
@@ -126,7 +126,7 @@ On April 14, 2026, Anthropic notified developers using Claude Sonnet 4 and Claud| Retirement date | Deprecated model | Recommended replacement || --------------- | -------------------------- | ----------------------- |-
| June 15, 2026 | `claude-sonnet-4-20250514` | `claude-sonnet-4-6` |+
| June 15, 2026 | `claude-sonnet-4-20250514` | `claude-sonnet-5-5` || June 15, 2026 | `claude-opus-4-20250514` | `claude-opus-4-8` |### 2026-02-19: Claude Haiku 3 model@
@@ -163,7 +163,7 @@ On October 28, 2025, Anthropic notified developers using Claude Sonnet 3.7 model| Retirement date | Deprecated model | Recommended replacement || ----------------- | ---------------------------- | ----------------------- |-
| February 19, 2026 | `claude-3-7-sonnet-20250219` | `claude-sonnet-4-6` |+
| February 19, 2026 | `claude-3-7-sonnet-20250219` | `claude-sonnet-5-5` |### 2025-08-13: Claude Sonnet 3.5 models@
@@ -175,8 +175,8 @@ On August 13, 2025, Anthropic notified developers using Claude Sonnet 3.5 models| Retirement date | Deprecated model | Recommended replacement || ---------------- | ---------------------------- | ----------------------- |-
| October 28, 2025 | `claude-3-5-sonnet-20240620` | `claude-sonnet-4-6` |-
| October 28, 2025 | `claude-3-5-sonnet-20241022` | `claude-sonnet-4-6` |+
| October 28, 2025 | `claude-3-5-sonnet-20240620` | `claude-sonnet-5-5` |+
| October 28, 2025 | `claude-3-5-sonnet-20241022` | `claude-sonnet-5-5` |### 2025-06-30: Claude Opus 3 model@
@@ -202,7 +202,7 @@ On January 21, 2025, Anthropic notified developers using Claude 2, Claude 2.1, a| --------------- | -------------------------- | ----------------------- || July 21, 2025 | `claude-2.0` | `claude-opus-4-8` || July 21, 2025 | `claude-2.1` | `claude-opus-4-8` |-
| July 21, 2025 | `claude-3-sonnet-20240229` | `claude-sonnet-4-6` |+
| July 21, 2025 | `claude-3-sonnet-20240229` | `claude-sonnet-5-5` |### 2024-09-04: Claude 1 and Instant models@
@@ -226,8 +226,8 @@ On September 4, 2024, Anthropic notified developers using Claude 1 and Instant mAnthropic occasionally deprecates request parameters that no longer apply to current models. How the API treats a deprecated parameter depends on the model, as the following table shows. Most SDKs keep deprecated parameters in their request types so existing code continues to type-check. The Python …-
| Parameter | Status | Behavior | Recommended replacement …-
| ------------------------------- | -------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------ | ----------------------------------------------------------------------------…-
| `temperature`, `top_p`, `top_k` | Deprecated (Claude Opus 4.7 and later) | Returns a 400 error when set to a non-default value on Claude 4.7 and later models and [Claude Mythos Preview](https://anthropic.com/glasswing). | Omit and use [prompting](https://platform.claude.com/docs/en/build-with-clau…+
| Parameter | Status | Behavior | Recommended replacement …+
| ------------------------------- | ---------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------ | --------------------------------------------------------------------------…+
| `temperature`, `top_p`, `top_k` | Deprecated (Claude 4.7 and later models) | Returns a 400 error when set to a non-default value on Claude 4.7 and later models and [Claude Mythos Preview](https://anthropic.com/glasswing). | Omit and use [prompting](https://platform.claude.com/docs/en/build-with-cl…For migration steps, see the [migration guide](https://platform.claude.com/docs/en/about-claude/models/migration-guide).7 lines shown here cut at 300 characters. The raw artifact at this commit is linked above.