# PR #1899: Add 2025-08-06 model family

- URL: https://github.com/openai/codex/pull/1899
- Author: pakrym-oai
- Created: 2025-08-06 23:08:48 UTC
- Updated: 2025-08-06 23:22:59 UTC
- Changes: +19/-0, Files changed: 3, Commits: 3

## Description

(No description.)

## Full Diff

```diff
diff --git a/codex-rs/core/src/client.rs b/codex-rs/core/src/client.rs
index 9748cde7cb..c3721ceb18 100644
--- a/codex-rs/core/src/client.rs
+++ b/codex-rs/core/src/client.rs
@@ -127,6 +127,15 @@ impl ModelClient {
 
         let auth_mode = auth.as_ref().map(|a| a.mode);
 
+        if self.config.model_family.family == "2025-08-06-model"
+            && auth_mode != Some(AuthMode::ChatGPT)
+        {
+            return Err(CodexErr::UnexpectedStatus(
+                StatusCode::BAD_REQUEST,
+                "2025-08-06-model is only supported with ChatGPT auth, run `codex login status` to check your auth status and `codex login` to login with ChatGPT".to_string(),
+            ));
+        }
+
         let store = prompt.store && auth_mode != Some(AuthMode::ChatGPT);
 
         let full_instructions = prompt.get_full_instructions(&self.config.model_family);
diff --git a/codex-rs/core/src/model_family.rs b/codex-rs/core/src/model_family.rs
index 7c4a9de6c2..cadbceca1e 100644
--- a/codex-rs/core/src/model_family.rs
+++ b/codex-rs/core/src/model_family.rs
@@ -89,6 +89,11 @@ pub fn find_family_for_model(slug: &str) -> Option<ModelFamily> {
         simple_model_family!(slug, "gpt-oss")
     } else if slug.starts_with("gpt-3.5") {
         simple_model_family!(slug, "gpt-3.5")
+    } else if slug.starts_with("2025-08-06-model") {
+        model_family!(
+            slug, "2025-08-06-model",
+            supports_reasoning_summaries: true,
+        )
     } else {
         None
     }
diff --git a/codex-rs/core/src/openai_model_info.rs b/codex-rs/core/src/openai_model_info.rs
index 935eb8be4f..0ce94267d3 100644
--- a/codex-rs/core/src/openai_model_info.rs
+++ b/codex-rs/core/src/openai_model_info.rs
@@ -77,6 +77,11 @@ pub(crate) fn get_model_info(model_family: &ModelFamily) -> Option<ModelInfo> {
             max_output_tokens: 4_096,
         }),
 
+        "2025-08-06-model" => Some(ModelInfo {
+            context_window: 200_000,
+            max_output_tokens: 100_000,
+        }),
+
         _ => None,
     }
 }
```

## Review Comments

### codex-rs/core/src/client.rs

- Created: 2025-08-06 23:16:09 UTC | Link: https://github.com/openai/codex/pull/1899#discussion_r2258507364

```diff
@@ -127,6 +127,15 @@ impl ModelClient {
 
         let auth_mode = auth.as_ref().map(|a| a.mode);
 
+        if self.config.model_family.family == "2025-08-06-model"
```

> Can we have `requires_chatgpt_auth` as a new field of `ModelFamily`? The point was to get away from slug-specific checks.

- Created: 2025-08-06 23:22:59 UTC | Link: https://github.com/openai/codex/pull/1899#discussion_r2258517098

```diff
@@ -127,6 +127,15 @@ impl ModelClient {
 
         let auth_mode = auth.as_ref().map(|a| a.mode);
 
+        if self.config.model_family.family == "2025-08-06-model"
```

> https://github.com/openai/codex/pull/1900