GPT-5 mini reasoning model docs (non-tented) (#57096)

Co-authored-by: Copilot <[email protected]>

Author: saritai

content/copilot/how-tos/use-chat/use-chat-in-github.md

@@ -140,6 +140,7 @@ You can attach an image to {% data variables.product.prodname_copilot_short %} a
 1. If you see the AI model picker at the top of the page, select one of the models that supports adding images to prompts:
 
    * {% data variables.copilot.copilot_gpt_41 %} (the default that's used if you don't see a model picker)
+   * {% data variables.copilot.copilot_gpt_5_mini %}
    * {% data variables.copilot.copilot_gpt_5 %}
    * {% data variables.copilot.copilot_claude_sonnet_35 %}
    * {% data variables.copilot.copilot_claude_sonnet_37 %}

content/copilot/reference/ai-models/model-comparison.md

@@ -26,6 +26,7 @@ Use this table to find a suitable model quickly, see more detail in the sections
 | Model                                                 | Task area | Excels at (primary use case) | Additional capabilities |
 |-------------------------------------------------------|-----------|-------------------------------|--------------------------|
 | {% data variables.copilot.copilot_gpt_41 %}           | General-purpose coding and writing | Fast, accurate code completions and explanations | Agent mode, vision |
+| {% data variables.copilot.copilot_gpt_5_mini %}       | Deep reasoning and debugging | Well-defined tasks and precise prompts | Reasoning |
 | {% data variables.copilot.copilot_gpt_5 %}            | Deep reasoning and debugging | Multi-step problem solving and architecture-level code analysis | Reasoning |
 | {% data variables.copilot.copilot_o3 %}               | Deep reasoning and debugging | Multi-step problem solving and architecture-level code analysis | Reasoning |
 | {% data variables.copilot.copilot_o4_mini %}          | Fast help with simple or repetitive tasks | Fast, reliable answers to lightweight coding questions | Lower latency |
@@ -95,6 +96,7 @@ These models are designed for tasks that require step-by-step reasoning, complex
 
 | Model                                                 | Why it's a good fit                                                                                           |
 |-------------------------------------------------------|---------------------------------------------------------------------------------------------------------------|
+| {% data variables.copilot.copilot_gpt_5_mini %}            | Delivers deep reasoning and debugging with faster responses and lower resource usage than GPT-5. Ideal for interactive sessions and step-by-step code analysis. |
 | {% data variables.copilot.copilot_gpt_5 %}            | Great at complex reasoning, code analysis, and technical decision-making.                                     |
 | {% data variables.copilot.copilot_o3 %}               | Strong at algorithm design, system debugging, and architecture decisions. Balances performance and reasoning. |
 | {% data variables.copilot.copilot_claude_sonnet_37 %} | Provides hybrid reasoning that adapts to both fast tasks and deeper thinking.                                 |

content/copilot/reference/ai-models/model-hosting.md

@@ -19,13 +19,14 @@ contentType: reference
 Used for:
 
 * {% data variables.copilot.copilot_gpt_41 %}
+* {% data variables.copilot.copilot_gpt_5_mini %}
 * {% data variables.copilot.copilot_gpt_5 %}
 * {% data variables.copilot.copilot_o3 %}
 * {% data variables.copilot.copilot_o4_mini %}
 
 {% data variables.copilot.copilot_gpt_41 %} is hosted by {% data variables.product.github %}'s Azure tenant when used in {% data variables.product.prodname_copilot %}.
 
-{% data variables.copilot.copilot_gpt_5 %}, {% data variables.copilot.copilot_o3 %} and {% data variables.copilot.copilot_o4_mini %} models are hosted by OpenAI and {% data variables.product.github %}'s Azure tenant. OpenAI makes the [following data commitment](https://openai.com/enterprise-privacy/): _We [OpenAI] do not train our models on your business data by default_. {% data variables.product.github %} maintains a [zero data retention agreement](https://platform.openai.com/docs/guides/your-data) with OpenAI.
+{% data variables.copilot.copilot_gpt_5 %}, {% data variables.copilot.copilot_gpt_5_mini %}, {% data variables.copilot.copilot_o3 %} and {% data variables.copilot.copilot_o4_mini %} models are hosted by OpenAI and {% data variables.product.github %}'s Azure tenant. OpenAI makes the [following data commitment](https://openai.com/enterprise-privacy/): _We [OpenAI] do not train our models on your business data by default_. {% data variables.product.github %} maintains a [zero data retention agreement](https://platform.openai.com/docs/guides/your-data) with OpenAI.
 
 When using OpenAI's models, input requests and output responses continue to run through {% data variables.product.prodname_copilot %}'s content filters for public code matching, when applied, along with those for harmful or offensive content.
 

content/copilot/reference/ai-models/supported-models.md

@@ -38,6 +38,7 @@ This table lists the AI models available in {% data variables.product.prodname_c
 | Model name                                                     | Provider | Release status | Agent mode | Ask mode | Edit mode |
 |----------------------------------------------------------------|----------|--------------|------------|----------------------|---------------|
 | {% data variables.copilot.copilot_gpt_41 %}                    | OpenAI | GA | {% octicon "check" aria-label="Included" %} | {% octicon "check" aria-label="Included" %} | {% octicon "check" aria-label="Included" %} |
+| {% data variables.copilot.copilot_gpt_5_mini %}                     | OpenAI | {% data variables.release-phases.public_preview_caps %} | {% octicon "check" aria-label="Included" %} | {% octicon "check" aria-label="Included" %} | {% octicon "check" aria-label="Included" %} |
 | {% data variables.copilot.copilot_gpt_5 %}                     | OpenAI | {% data variables.release-phases.public_preview_caps %} | {% octicon "check" aria-label="Included" %} | {% octicon "check" aria-label="Included" %} | {% octicon "check" aria-label="Included" %} |
 | {% data variables.copilot.copilot_o3 %}                        | OpenAI | {% data variables.release-phases.public_preview_caps %} | {% octicon "x" aria-label="Not included" %} | {% octicon "check" aria-label="Included" %} | {% octicon "check" aria-label="Included" %} |
 | {% data variables.copilot.copilot_o4_mini %}                   | OpenAI | {% data variables.release-phases.public_preview_caps %} | {% octicon "x" aria-label="Not included" %} | {% octicon "check" aria-label="Included" %} | {% octicon "check" aria-label="Included" %} |
@@ -61,6 +62,7 @@ The following table shows which models are available in each client.
 | Model                                                          | {% data variables.product.prodname_dotcom_the_website %} | {% data variables.product.prodname_vscode %} | {% data variables.product.prodname_vs %}     | Eclipse                                     | Xcode                                       | JetBrains IDEs                              |
 |----------------------------------------------------------------|------------|---------|----------------------------------------------|---------------------------------------------|---------------------------------------------|---------------------------------------------|
 | {% data variables.copilot.copilot_gpt_41 %}                    | {% octicon "check" aria-label="Included" %}           | {% octicon "check" aria-label="Included" %}       | {% octicon "check" aria-label="Included" %}  | {% octicon "check" aria-label="Included" %} | {% octicon "check" aria-label="Included" %} | {% octicon "check" aria-label="Included" %} |
+| {% data variables.copilot.copilot_gpt_5_mini %}                    | {% octicon "check" aria-label="Included" %}           | {% octicon "check" aria-label="Included" %}       | {% octicon "x" aria-label="Not included" %} | {% octicon "x" aria-label="Not included" %} | {% octicon "x" aria-label="Not included" %} | {% octicon "x" aria-label="Not included" %} |
 | {% data variables.copilot.copilot_gpt_5 %}                    | {% octicon "check" aria-label="Included" %}           | {% octicon "check" aria-label="Included" %}       | {% octicon "x" aria-label="Not included" %} | {% octicon "x" aria-label="Not included" %} | {% octicon "x" aria-label="Not included" %} | {% octicon "x" aria-label="Not included" %} |
 | {% data variables.copilot.copilot_o3 %}                        | {% octicon "check" aria-label="Included" %}          | {% octicon "check" aria-label="Included" %}       | {% octicon "x" aria-label="Not included" %}  | {% octicon "check" aria-label="Included" %} | {% octicon "check" aria-label="Included" %} | {% octicon "check" aria-label="Included" %} |
 | {% data variables.copilot.copilot_o4_mini %}                   | {% octicon "check" aria-label="Included" %}          | {% octicon "check" aria-label="Included" %}       | {% octicon "x" aria-label="Not included" %}  | {% octicon "check" aria-label="Included" %} | {% octicon "check" aria-label="Included" %} | {% octicon "check" aria-label="Included" %} |

data/reusables/copilot/available-models-per-plan.md

@@ -3,6 +3,7 @@
 | Available models in chat                                       | {% data variables.copilot.copilot_free_short %} | {% data variables.copilot.copilot_pro_short %} | {% data variables.copilot.copilot_pro_plus_short %} | {% data variables.copilot.copilot_business_short %} | {% data variables.copilot.copilot_enterprise_short %} |
 |----------------------------------------------------------------|-------------------------------------------------|--------------------------------------------------|------------------------------------------------------|-------------------------------------------------------|----------------------------------------------------------|
 | {% data variables.copilot.copilot_gpt_41 %}                    | {% octicon "check" aria-label="Included" %}      | {% octicon "check" aria-label="Included" %}      | {% octicon "check" aria-label="Included" %}         | {% octicon "check" aria-label="Included" %}           | {% octicon "check" aria-label="Included" %}              |
+| {% data variables.copilot.copilot_gpt_5_mini %}                | {% octicon "check" aria-label="Included" %}     | {% octicon "check" aria-label="Included" %}      | {% octicon "check" aria-label="Included" %}         | {% octicon "check" aria-label="Included" %}           | {% octicon "check" aria-label="Included" %}              |
 | {% data variables.copilot.copilot_gpt_5 %}                     | {% octicon "x" aria-label="Not included" %}     | {% octicon "check" aria-label="Included" %}      | {% octicon "check" aria-label="Included" %}         | {% octicon "check" aria-label="Included" %}           | {% octicon "check" aria-label="Included" %}              |
 | {% data variables.copilot.copilot_o3 %}                        | {% octicon "x" aria-label="Not included" %}      | {% octicon "x" aria-label="Not included" %}      | {% octicon "check" aria-label="Included" %}         | {% octicon "x" aria-label="Not included" %}           | {% octicon "check" aria-label="Included" %}              |
 | {% data variables.copilot.copilot_o4_mini %}                   | {% octicon "x" aria-label="Not included" %}      | {% octicon "check" aria-label="Included" %}      | {% octicon "check" aria-label="Included" %}         | {% octicon "check" aria-label="Included" %}           | {% octicon "check" aria-label="Included" %}              |

data/reusables/copilot/model-multipliers.md

@@ -3,6 +3,7 @@
 | Model                                                          | Multiplier for **paid plans** | Multiplier for **{% data variables.copilot.copilot_free_short %}** |
 |----------------------------------------------------------------|-------------------------------|--------------------------------------------------------------------|
 | {% data variables.copilot.copilot_gpt_41 %}                    | 0                             | 1                                                                  |
+| {% data variables.copilot.copilot_gpt_5_mini %}                | 0                             | 1                                                     |
 | {% data variables.copilot.copilot_gpt_5 %}                     | 1                             | Not applicable                                                     |
 | {% data variables.copilot.copilot_gpt_4o %}                    | 0                             | 1                                                                  |
 | {% data variables.copilot.copilot_claude_sonnet_35 %}          | 1                             | 1                                                                  |

data/variables/copilot.yml

@@ -112,6 +112,7 @@ copilot_gemini_25_pro: 'Gemini 2.5 Pro'
 copilot_gpt_41: 'GPT-4.1'
 copilot_gpt_4o: 'GPT-4o'
 copilot_gpt_5: 'GPT-5'
+copilot_gpt_5_mini: 'GPT-5 mini'
 # OpenAI 'o' series:
 copilot_o3: 'o3'
 copilot_o4_mini: 'o4-mini'