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Update defaults to gpt-5.1 (#6652)

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## Summary
- update documentation, example configs, and automation defaults to
reference gpt-5.1 / gpt-5.1-codex
- bump the CLI and core configuration defaults, model presets, and error
messaging to the new models while keeping the model-family/tool coverage
for legacy slugs
- refresh tests, fixtures, and TUI snapshots so they expect the upgraded
defaults

## Testing
- `cargo test -p codex-core
config::tests::test_precedence_fixture_with_gpt5_profile`


------
[Codex
Task](https://chatgpt.com/codex/tasks/task_i_6916c5b3c2b08321ace04ee38604fc6b)
This commit is contained in:
Ahmed Ibrahim
2025-11-17 17:40:11 -08:00
committed by GitHub
parent 8465f1f2f4
commit ddcc60a085
43 changed files with 483 additions and 238 deletions
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docs/config.md
+5 -5
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@@ -64,7 +64,7 @@ Notes:
The model that Codex should use.
```toml
model = "gpt-5" # overrides the default ("gpt-5-codex" on macOS/Linux, "gpt-5" on Windows)
model = "gpt-5.1" # overrides the default ("gpt-5.1-codex" on macOS/Linux, "gpt-5.1" on Windows)
```
### model_providers
@@ -191,7 +191,7 @@ model = "mistral"
### model_reasoning_effort
If the selected model is known to support reasoning (for example: `o3`, `o4-mini`, `codex-*`, `gpt-5`, `gpt-5-codex`), reasoning is enabled by default when using the Responses API. As explained in the [OpenAI Platform documentation](https://platform.openai.com/docs/guides/reasoning?api-mode=responses#get-started-with-reasoning), this can be set to:
If the selected model is known to support reasoning (for example: `o3`, `o4-mini`, `codex-*`, `gpt-5.1`, `gpt-5.1-codex`), reasoning is enabled by default when using the Responses API. As explained in the [OpenAI Platform documentation](https://platform.openai.com/docs/guides/reasoning?api-mode=responses#get-started-with-reasoning), this can be set to:
- `"minimal"`
- `"low"`
@@ -227,7 +227,7 @@ When set, Codex includes a `text` object in the request payload with the configu
Example:
```toml
model = "gpt-5"
model = "gpt-5.1"
model_verbosity = "low"
```
@@ -818,7 +818,7 @@ Users can specify config values at multiple levels. Order of precedence is as fo
1. custom command-line argument, e.g., `--model o3`
2. as part of a profile, where the `--profile` is specified via a CLI (or in the config file itself)
3. as an entry in `config.toml`, e.g., `model = "o3"`
4. the default value that comes with Codex CLI (i.e., Codex CLI defaults to `gpt-5-codex`)
4. the default value that comes with Codex CLI (i.e., Codex CLI defaults to `gpt-5.1-codex`)
### history
@@ -921,7 +921,7 @@ Valid values:
| Key | Type / Values | Notes |
| ------------------------------------------------ | ----------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------- |
| `model` | string | Model to use (e.g., `gpt-5-codex`). |
| `model` | string | Model to use (e.g., `gpt-5.1-codex`). |
| `model_provider` | string | Provider id from `model_providers` (default: `openai`). |
| `model_context_window` | number | Context window tokens. |
| `model_max_output_tokens` | number | Max output tokens. |
docs/example-config.md
+5 -5
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@@ -19,11 +19,11 @@ Use this example configuration as a starting point. For an explanation of each f
################################################################################
# Primary model used by Codex. Default differs by OS; non-Windows defaults here.
# Linux/macOS default: "gpt-5-codex"; Windows default: "gpt-5".
model = "gpt-5-codex"
# Linux/macOS default: "gpt-5.1-codex"; Windows default: "gpt-5.1".
model = "gpt-5.1-codex"
# Model used by the /review feature (code reviews). Default: "gpt-5-codex".
review_model = "gpt-5-codex"
# Model used by the /review feature (code reviews). Default: "gpt-5.1-codex".
review_model = "gpt-5.1-codex"
# Provider id selected from [model_providers]. Default: "openai".
model_provider = "openai"
@@ -315,7 +315,7 @@ mcp_oauth_credentials_store = "auto"
[profiles]
# [profiles.default]
# model = "gpt-5-codex"
# model = "gpt-5.1-codex"
# model_provider = "openai"
# approval_policy = "on-request"
# sandbox_mode = "read-only"
docs/exec.md
+2 -2
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@@ -99,8 +99,8 @@ codex exec resume --last "Fix use-after-free issues"
Only the conversation context is preserved; you must still provide flags to customize Codex behavior.
```shell
codex exec --model gpt-5-codex --json "Review the change, look for use-after-free issues"
codex exec --model gpt-5 --json resume --last "Fix use-after-free issues"
codex exec --model gpt-5.1-codex --json "Review the change, look for use-after-free issues"
codex exec --model gpt-5.1 --json resume --last "Fix use-after-free issues"
```
## Authentication