🤖 feat: GPT-5.4 and GPT-5.4-pro Context + Pricing (#12099)

* ✨ feat: Add support for new GPT-5.4 and GPT-5.4-pro models

- Introduced new token values and cache settings for 'gpt-5.4' and 'gpt-5.4-pro' in the API model configurations.
- Updated maximum output limits for the new models in the tokens utility.
- Included 'gpt-5.4' and 'gpt-5.4-pro' in the shared OpenAI models list for consistent access across the application.

* 🔧 update: Enhance GPT-5.4 and GPT-5.4-pro model configurations

- Refined token pricing and cache settings for 'gpt-5.4' and 'gpt-5.4-pro' in the API model configurations.
- Added tests for cache multipliers and maximum token limits for the new models.
- Updated shared OpenAI models list to include 'gpt-5.4-thinking' and added a note for verifying pricing before release.

* 🔧 update: Add clarification to token pricing for 'gpt-5.4-pro'

- Added a comment to the 'gpt-5.4-pro' model configuration in tokens.ts to specify that it shares the same token window as 'gpt-5.4', enhancing clarity for future reference.

packages/api/src/utils/tokens.ts

@@ -55,6 +55,8 @@ const openAIModels = {
   'gpt-5.1': 400000,
   'gpt-5.2': 400000,
   'gpt-5.3': 400000,
+  'gpt-5.4': 272000, // standard context; 1M experimental available via API opt-in (2x rate)
+  'gpt-5.4-pro': 272000, // same window as gpt-5.4
   'gpt-5-mini': 400000,
   'gpt-5-nano': 400000,
   'gpt-5-pro': 400000,
@@ -361,6 +363,8 @@ export const modelMaxOutputs = {
   'gpt-5.1': 128000,
   'gpt-5.2': 128000,
   'gpt-5.3': 128000,
+  'gpt-5.4': 128000,
+  'gpt-5.4-pro': 128000,
   'gpt-5-mini': 128000,
   'gpt-5-nano': 128000,
   'gpt-5-pro': 128000,

packages/data-provider/src/config.ts

@@ -1101,6 +1101,10 @@ export const alternateName = {
 };
 
 const sharedOpenAIModels = [
+  'gpt-5.4',
+  // TODO: gpt-5.4-thinking may have separate reasoning token pricing — verify before release
+  'gpt-5.4-thinking',
+  'gpt-5.4-pro',
   'gpt-5.1',
   'gpt-5.1-chat-latest',
   'gpt-5.1-codex',
@@ -1276,6 +1280,7 @@ export const visionModels = [
   'o4-mini',
   'o3',
   'o1',
+  'gpt-5',
   'gpt-4.1',
   'gpt-4.5',
   'llava',