chore: update model-to-API mapping (2026-07-09) (#6055)

* chore: update model-to-API mapping (2026-07-09)

- Update lastUpdated to 2026-07-09T06:32:34Z
- Clarify gpt-5.5 note: not present in OpenAI OpenAPI spec v2.3.0
- Update gpt-4-turbo, gpt-4, gpt-3.5-turbo to support both endpoints
  (these models are in ModelIdsShared per OpenAI spec v2.3.0, meaning
  they work with both /v1/chat/completions and /v1/responses)

Sources: OpenAI OpenAPI spec v2.3.0, Anthropic docs (no new models detected)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* chore: mirror model-api-mapping updates into containers/api-proxy

* fix: update last_updated assertion to match new mapping data

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

---------

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: Landon Cox <landon.cox@microsoft.com>

Author: 4 people

containers/api-proxy/model-api-mapping.json

@@ -1,7 +1,7 @@
 {
   "title": "Model-to-API Endpoint Mapping",
   "description": "Maps AI model families to their supported API endpoints. Used to determine which endpoint (chat/completions vs responses vs messages) a model requires.",
-  "lastUpdated": "2026-07-05T06:27:39Z",
+  "lastUpdated": "2026-07-09T06:32:34Z",
   "sources": {
     "openai": "https://platform.openai.com/docs/models",
     "anthropic": "https://docs.anthropic.com/en/docs/about-claude/models"
@@ -23,7 +23,7 @@
           "family": "gpt-5.5",
           "patterns": ["gpt-5.5*"],
           "endpoints": ["responses"],
-          "notes": "Responses API only. Not accessible via /chat/completions."
+          "notes": "Responses API only. Not present in OpenAI OpenAPI spec v2.3.0; reserved for future gpt-5.5 family models."
         },
         {
           "family": "gpt-5.4",
@@ -142,20 +142,20 @@
         {
           "family": "gpt-4-turbo",
           "patterns": ["gpt-4-turbo*"],
-          "endpoints": ["chat_completions"],
-          "notes": "Legacy. Chat completions only."
+          "endpoints": ["chat_completions", "responses"],
+          "notes": "Legacy. In ModelIdsShared per OpenAI spec v2.3.0; supports both endpoints."
         },
         {
           "family": "gpt-4",
           "patterns": ["gpt-4", "gpt-4-*"],
-          "endpoints": ["chat_completions"],
-          "notes": "Legacy. Chat completions only."
+          "endpoints": ["chat_completions", "responses"],
+          "notes": "Legacy. In ModelIdsShared per OpenAI spec v2.3.0; supports both endpoints."
         },
         {
           "family": "gpt-3.5-turbo",
           "patterns": ["gpt-3.5-turbo*"],
-          "endpoints": ["chat_completions"],
-          "notes": "Legacy. Chat completions only. Deprecated."
+          "endpoints": ["chat_completions", "responses"],
+          "notes": "Legacy. In ModelIdsShared per OpenAI spec v2.3.0; supports both endpoints. Deprecated."
         }
       ]
     },

containers/api-proxy/model-api-mapping.test.js

@@ -111,7 +111,7 @@ describe('model-api-mapping', () => {
       expect(reflect.available).toBe(true);
       expect(reflect.providers).toContain('openai');
       expect(reflect.providers).toContain('anthropic');
-      expect(reflect.last_updated).toBe('2026-07-05T06:27:39Z');
+      expect(reflect.last_updated).toBe('2026-07-09T06:32:34Z');
       expect(reflect.error).toBeNull();
     });
   });

docs/model-api-mapping.json

@@ -1,7 +1,7 @@
 {
   "title": "Model-to-API Endpoint Mapping",
   "description": "Maps AI model families to their supported API endpoints. Used to determine which endpoint (chat/completions vs responses vs messages) a model requires.",
-  "lastUpdated": "2026-07-07T06:29:55Z",
+  "lastUpdated": "2026-07-09T06:32:34Z",
   "sources": {
     "openai": "https://platform.openai.com/docs/models",
     "anthropic": "https://docs.anthropic.com/en/docs/about-claude/models"
@@ -23,7 +23,7 @@
           "family": "gpt-5.5",
           "patterns": ["gpt-5.5*"],
           "endpoints": ["responses"],
-          "notes": "Responses API only. Not accessible via /chat/completions."
+          "notes": "Responses API only. Not present in OpenAI OpenAPI spec v2.3.0; reserved for future gpt-5.5 family models."
         },
         {
           "family": "gpt-5.4",
@@ -142,20 +142,20 @@
         {
           "family": "gpt-4-turbo",
           "patterns": ["gpt-4-turbo*"],
-          "endpoints": ["chat_completions"],
-          "notes": "Legacy. Chat completions only."
+          "endpoints": ["chat_completions", "responses"],
+          "notes": "Legacy. In ModelIdsShared per OpenAI spec v2.3.0; supports both endpoints."
         },
         {
           "family": "gpt-4",
           "patterns": ["gpt-4", "gpt-4-*"],
-          "endpoints": ["chat_completions"],
-          "notes": "Legacy. Chat completions only."
+          "endpoints": ["chat_completions", "responses"],
+          "notes": "Legacy. In ModelIdsShared per OpenAI spec v2.3.0; supports both endpoints."
         },
         {
           "family": "gpt-3.5-turbo",
           "patterns": ["gpt-3.5-turbo*"],
-          "endpoints": ["chat_completions"],
-          "notes": "Legacy. Chat completions only. Deprecated."
+          "endpoints": ["chat_completions", "responses"],
+          "notes": "Legacy. In ModelIdsShared per OpenAI spec v2.3.0; supports both endpoints. Deprecated."
         }
       ]
     },