Skip to content

feat: Add Grok 4 Fast model to xAI provider #8476

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
wants to merge 3 commits into from
Closed

feat: Add Grok 4 Fast model to xAI provider #8476

Show file tree
Hide file tree
Changes from 2 commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
a02a0e7
feat: add grok-4-fast model to xAI provider
roomote Oct 2, 2025
d277ecd
fix: correct Grok-4-Fast pricing and maxTokens according to official …
daniel-lxs Oct 27, 2025
7bea3b1
test: update xai test to match corrected maxTokens for grok-4-fast
daniel-lxs Oct 27, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
9 changes: 9 additions & 0 deletions packages/types/src/providers/xai.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,15 @@ export const xaiModels = {
cacheReadsPrice: 0.75,
description: "xAI's Grok-4 model with 256K context window",
},
"grok-4-fast": {
maxTokens: 8192,
contextWindow: 2_000_000,
supportsImages: false,
supportsPromptCache: false,
inputPrice: 0.2,
outputPrice: 0.5,
description: "xAI's Grok-4 Fast model with 2M context window",
},
"grok-3": {
maxTokens: 8192,
contextWindow: 131072,
Expand Down
11 changes: 11 additions & 0 deletions src/api/providers/__tests__/xai.spec.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -69,6 +69,17 @@ describe("XAIHandler", () => {
expect(model.info).toEqual(xaiModels[testModelId])
})

test("should return grok-4-fast model when specified", () => {
const testModelId = "grok-4-fast"
const handlerWithModel = new XAIHandler({ apiModelId: testModelId })
const model = handlerWithModel.getModel()

expect(model.id).toBe(testModelId)
expect(model.info).toEqual(xaiModels[testModelId])
expect(model.info.contextWindow).toBe(2_000_000)
expect(model.info.maxTokens).toBe(30_000)
Copy link
Author

@roomote roomote bot Oct 27, 2025

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Test expects maxTokens to be 30_000 but the model configuration (line 32 in xai.ts) defines it as 8192. This mismatch was introduced when the second commit updated the pricing and maxTokens but didn't update the test. The test will fail when run.

Suggested change
expect(model.info.maxTokens).toBe(30_000)
expect(model.id).toBe(testModelId)
expect(model.info).toEqual(xaiModels[testModelId])
expect(model.info.contextWindow).toBe(2_000_000)
expect(model.info.maxTokens).toBe(8192)

})

it("should include reasoning_effort parameter for mini models", async () => {
const miniModelHandler = new XAIHandler({
apiModelId: "grok-3-mini",
Expand Down
Loading