diff --git a/aider/models.py b/aider/models.py
index 1b7c8cde3..6289babca 100644
--- a/aider/models.py
+++ b/aider/models.py
@@ -8,6 +8,7 @@ import platform
 import sys
 import time
 from dataclasses import dataclass, fields
+from datetime import datetime
 from pathlib import Path
 from typing import Optional, Union
 
@@ -874,6 +875,24 @@ class Model(ModelSettings):
     def is_ollama(self):
         return self.name.startswith("ollama/") or self.name.startswith("ollama_chat/")
 
+    def github_copilot_token_to_open_ai_key(self):
+        # check to see if there's an openai api key
+        # If so, check to see if it's expire
+        openai_api_key = 'OPENAI_API_KEY'
+
+        if openai_api_key not in os.environ or (
+            int(dict(x.split("=") for x in os.environ[openai_api_key].split(";"))['exp']) < int(datetime.now().timestamp())
+        ):
+            import requests
+            headers = {
+                'Authorization': f"Bearer {os.environ['GITHUB_COPILOT_TOKEN']}",
+                'Editor-Version': self.extra_params['extra_headers']['Editor-Version'],
+                'Copilot-Integration-Id': self.extra_params['extra_headers']['Copilot-Integration-Id'],
+                'Content-Type': 'application/json',
+            }
+            res = requests.get("https://api.github.com/copilot_internal/v2/token", headers=headers)
+            os.environ[openai_api_key] = res.json()['token']
+
     def send_completion(self, messages, functions, stream, temperature=None):
         if os.environ.get("AIDER_SANITY_CHECK_TURNS"):
             sanity_check_messages(messages)
@@ -915,6 +934,10 @@ class Model(ModelSettings):
             dump(kwargs)
         kwargs["messages"] = messages
 
+        # Are we using github copilot?
+        if 'GITHUB_COPILOT_TOKEN' in os.environ:
+            self.github_copilot_token_to_open_ai_key()
+
         res = litellm.completion(**kwargs)
         return hash_object, res
 
diff --git a/aider/resources/model-settings.yml b/aider/resources/model-settings.yml
index d8318962f..23cd28875 100644
--- a/aider/resources/model-settings.yml
+++ b/aider/resources/model-settings.yml
@@ -1621,7 +1621,7 @@
   extra_params:
     extra_headers:
       anthropic-beta: prompt-caching-2024-07-31,pdfs-2024-09-25,output-128k-2025-02-19
-    max_tokens: 64000
+    max_tokens: 32000
   cache_control: true
   editor_model_name: claude-sonnet-4-20250514
   editor_edit_format: editor-diff
@@ -1635,7 +1635,7 @@
   extra_params:
     extra_headers:
       anthropic-beta: prompt-caching-2024-07-31,pdfs-2024-09-25,output-128k-2025-02-19
-    max_tokens: 64000
+    max_tokens: 32000
   cache_control: true
   editor_model_name: anthropic/claude-sonnet-4-20250514
   editor_edit_format: editor-diff
@@ -1649,7 +1649,7 @@
   extra_params:
     extra_headers:
       anthropic-beta: prompt-caching-2024-07-31,pdfs-2024-09-25,output-128k-2025-02-19
-    max_tokens: 64000
+    max_tokens: 32000
   cache_control: true
   editor_model_name: anthropic.claude-sonnet-4-20250514-v1:0
   editor_edit_format: editor-diff
@@ -1663,7 +1663,7 @@
   extra_params:
     extra_headers:
       anthropic-beta: prompt-caching-2024-07-31,pdfs-2024-09-25,output-128k-2025-02-19
-    max_tokens: 64000
+    max_tokens: 32000
   cache_control: true
   editor_model_name: bedrock_converse/anthropic.claude-sonnet-4-20250514-v1:0
   editor_edit_format: editor-diff
@@ -1677,7 +1677,7 @@
   extra_params:
     extra_headers:
       anthropic-beta: prompt-caching-2024-07-31,pdfs-2024-09-25,output-128k-2025-02-19
-    max_tokens: 64000
+    max_tokens: 32000
   cache_control: true
   editor_model_name: bedrock_converse/us.anthropic.claude-sonnet-4-20250514-v1:0
   editor_edit_format: editor-diff
@@ -1691,7 +1691,7 @@
   extra_params:
     extra_headers:
       anthropic-beta: prompt-caching-2024-07-31,pdfs-2024-09-25,output-128k-2025-02-19
-    max_tokens: 64000
+    max_tokens: 32000
   cache_control: true
   editor_model_name: bedrock_converse/eu.anthropic.claude-sonnet-4-20250514-v1:0
   editor_edit_format: editor-diff
@@ -1705,7 +1705,7 @@
   extra_params:
     extra_headers:
       anthropic-beta: prompt-caching-2024-07-31,pdfs-2024-09-25,output-128k-2025-02-19
-    max_tokens: 64000
+    max_tokens: 32000
   cache_control: true
   editor_model_name: eu.anthropic.claude-sonnet-4-20250514-v1:0
   editor_edit_format: editor-diff
@@ -1719,7 +1719,7 @@
   extra_params:
     extra_headers:
       anthropic-beta: prompt-caching-2024-07-31,pdfs-2024-09-25,output-128k-2025-02-19
-    max_tokens: 64000
+    max_tokens: 32000
   cache_control: true
   editor_model_name: us.anthropic.claude-sonnet-4-20250514-v1:0
   editor_edit_format: editor-diff
@@ -1731,7 +1731,7 @@
   use_repo_map: true
   examples_as_sys_msg: false
   extra_params:
-    max_tokens: 64000
+    max_tokens: 32000
   editor_model_name: vertex_ai/claude-sonnet-4@20250514
   editor_edit_format: editor-diff
   accepts_settings: ["thinking_tokens"]
@@ -1742,7 +1742,7 @@
   use_repo_map: true
   examples_as_sys_msg: false
   extra_params:
-    max_tokens: 64000
+    max_tokens: 32000
   editor_model_name: vertex_ai-anthropic_models/vertex_ai/claude-sonnet-4@20250514
   editor_edit_format: editor-diff
   accepts_settings: ["thinking_tokens"]