Deprecate Gemini 2.5 Pro and Gemini 3 Flash (#62569)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 3d652994-a326-4b43-a774-a276c9b8470d

Author: sunbrye

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

@@ -71,13 +71,11 @@ When using {% data variables.copilot.copilot_claude %}, input prompts and output
 
 Used for:
 
-* {% data variables.copilot.copilot_gemini_25_pro %}
-* {% data variables.copilot.copilot_gemini_3_flash %}
 * {% data variables.copilot.copilot_gemini_31_pro %}
 * {% data variables.copilot.copilot_gemini_35_flash %}
 * {% data variables.copilot.copilot_gemini_36_flash %}
 
-{% data variables.product.prodname_copilot %} uses {% data variables.copilot.copilot_gemini_31_pro %}, {% data variables.copilot.copilot_gemini_3_flash %}, and {% data variables.copilot.copilot_gemini_25_pro %} hosted on Google Cloud Platform (GCP). When using {% data variables.copilot.copilot_gemini %} models, prompts and metadata are sent to GCP, which makes the [following data commitment](https://cloud.google.com/vertex-ai/generative-ai/docs/data-governance): _{% data variables.copilot.copilot_gemini %} doesn't use your prompts, or its responses, as data to train its models._
+{% data variables.product.prodname_copilot %} uses {% data variables.copilot.copilot_gemini %} models hosted on Google Cloud Platform (GCP). When using {% data variables.copilot.copilot_gemini %} models, prompts and metadata are sent to GCP, which makes the [following data commitment](https://cloud.google.com/vertex-ai/generative-ai/docs/data-governance): _{% data variables.copilot.copilot_gemini %} doesn't use your prompts, or its responses, as data to train its models._
 
 To provide better service quality and reduce latency, {% data variables.product.github %} uses [prompt caching](https://cloud.google.com/vertex-ai/generative-ai/docs/data-governance#customer_data_retention_and_achieving_zero_data_retention).
 

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

@@ -134,7 +134,6 @@ Some {% data variables.product.prodname_copilot_short %} models require minimum
 
 | Model                                                    | {% data variables.product.prodname_vscode %} | {% data variables.product.prodname_vs %} | JetBrains IDEs | Xcode | Eclipse |
 |----------------------------------------------------------|----------------------------------------------|------------------------------------------|----------------|-------|---------|
-| {% data variables.copilot.copilot_gemini_3_flash %}      | `v1.115.0` | `17.14.22` or `18.1.0`         | `1.5.62` | `0.46.0` | `0.14.0` |
 | {% data variables.copilot.copilot_gemini_31_pro %}       | `v1.115.0` | `17.14.22` or `18.1.0`         | `1.5.62` | `0.46.0` | `0.14.0` |
 | {% data variables.copilot.copilot_gemini_35_flash %}     | `v1.115.0` | `17.14.22` or `18.1.0`         | `1.5.62` | `0.46.0` | `0.14.0` |
 | {% data variables.copilot.copilot_gemini_36_flash %}     | `v1.128.0` | `17.14.22` or `18.1.0`         | TBD | TBD | TBD |

data/tables/copilot/annual-subscriber-model-multipliers.yml

@@ -26,12 +26,6 @@
 - model: 'Claude Sonnet 4.6'
   new_multiplier: '9'
 
-- model: 'Gemini 2.5 Pro'
-  new_multiplier: '1'
-
-- model: 'Gemini 3 Flash'
-  new_multiplier: '0.33'
-
 - model: 'Gemini 3 Pro'
   new_multiplier: '6'
 

data/tables/copilot/model-comparison.yml

@@ -95,16 +95,6 @@
   further_reading: '[Claude Sonnet 5 model card](https://www-cdn.anthropic.com/9e6a1044980d8c4ed85669faf9c2a8342e2e9f1e/Claude%20Sonnet%205%20System%20Card.pdf)'
 
 # Google
-- name: Gemini 2.5 Pro
-  task_area: Deep reasoning and debugging
-  excels_at: Complex code generation, debugging, and research workflows
-  further_reading: '[Gemini 2.5 Pro model card](https://storage.googleapis.com/model-cards/documents/gemini-2.5-pro.pdf)'
-
-- name: Gemini 3 Flash
-  task_area: Fast help with simple or repetitive tasks
-  excels_at: Fast, reliable answers to lightweight coding questions
-  further_reading: '[Gemini 3 Flash model card](https://storage.googleapis.com/deepmind-media/Model-Cards/Gemini-3-Flash-Model-Card.pdf)'
-
 - name: Gemini 3.1 Pro
   task_area: Deep reasoning and debugging
   excels_at: Effective and efficient edit-then-test loops with high tool precision

data/tables/copilot/model-deprecation-history.yml

@@ -11,6 +11,14 @@
 # - retirement_date: The official retirement date for the model (YYYY-MM-DD).
 # - suggested_alternative: The model recommended for migration.
 
+- name: 'Gemini 2.5 Pro'
+  retirement_date: '2026-07-31'
+  suggested_alternative: 'Gemini 3.1 Pro'
+
+- name: 'Gemini 3 Flash'
+  retirement_date: '2026-07-31'
+  suggested_alternative: 'Gemini 3.6 Flash'
+
 - name: 'Claude Opus 4.6 (fast mode) (preview)'
   retirement_date: '2026-06-29'
   suggested_alternative: 'Claude Opus 4.8 (fast mode) (preview)'

data/tables/copilot/model-release-status.yml

@@ -99,14 +99,6 @@
 
 # Google models
 
-- name: 'Gemini 2.5 Pro'
-  provider: 'Google'
-  release_status: 'GA'
-
-- name: 'Gemini 3 Flash'
-  provider: 'Google'
-  release_status: 'Public preview'
-
 - name: 'Gemini 3.1 Pro'
   provider: 'Google'
   release_status: 'Public preview'

data/tables/copilot/model-supported-clients.yml

@@ -113,24 +113,6 @@
   xcode: true
   jetbrains: true
 
-- name: Gemini 2.5 Pro
-  dotcom: false
-  cli: false
-  vscode: true
-  vs: true
-  eclipse: true
-  xcode: true
-  jetbrains: true
-
-- name: Gemini 3 Flash
-  dotcom: false
-  cli: false
-  vscode: true
-  vs: true
-  eclipse: true
-  xcode: true
-  jetbrains: true
-
 - name: Gemini 3.1 Pro
   dotcom: false
   cli: true

data/tables/copilot/model-supported-plans.yml

@@ -89,20 +89,6 @@
   business: true
   enterprise: true
 
-- name: Gemini 2.5 Pro
-  pro: true
-  pro_plus: true
-  max: true
-  business: true
-  enterprise: true
-
-- name: Gemini 3 Flash
-  pro: true
-  pro_plus: true
-  max: true
-  business: true
-  enterprise: true
-
 - name: Gemini 3.1 Pro
   pro: true
   pro_plus: true

data/tables/copilot/models-and-pricing.yml

@@ -268,26 +268,6 @@
   cache_write: $12.50
 
 # Google
-- model: 'Gemini 2.5 Pro'
-  provider: google
-  release_status: GA
-  category: Powerful
-  threshold: 'Not applicable'
-  tier: 'Default'
-  input: $1.25
-  cached_input: $0.125
-  output: $10.00
-
-- model: 'Gemini 3 Flash'
-  provider: google
-  release_status: Public preview
-  category: Lightweight
-  threshold: 'Not applicable'
-  tier: 'Default'
-  input: $0.50
-  cached_input: $0.05
-  output: $3.00
-
 - model: 'Gemini 3.1 Pro'
   provider: google
   release_status: Public preview