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feat: set horizon-alpha model max tokens to 32k for OpenRouter #6470

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Merged
merged 2 commits into from
Jul 31, 2025
Merged

feat: set horizon-alpha model max tokens to 32k for OpenRouter #6470

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0d0e0ff
feat: set horizon-alpha model max tokens to 32k for OpenRouter
roomote Jul 31, 2025
68e2daf
test: add unit tests for horizon-alpha model 32k max tokens override
roomote Jul 31, 2025
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50 changes: 49 additions & 1 deletion src/api/providers/fetchers/__tests__/openrouter.spec.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@ import {
OPEN_ROUTER_REQUIRED_REASONING_BUDGET_MODELS,
} from "@roo-code/types"

import { getOpenRouterModelEndpoints, getOpenRouterModels } from "../openrouter"
import { getOpenRouterModelEndpoints, getOpenRouterModels, parseOpenRouterModel } from "../openrouter"

nockBack.fixtures = path.join(__dirname, "fixtures")
nockBack.setMode("lockdown")
Expand Down Expand Up @@ -251,4 +251,52 @@ describe("OpenRouter API", () => {
nockDone()
})
})

describe("parseOpenRouterModel", () => {
it("sets horizon-alpha model to 32k max tokens", () => {
const mockModel = {
name: "Horizon Alpha",
description: "Test model",
context_length: 128000,
max_completion_tokens: 128000,
pricing: {
prompt: "0.000003",
completion: "0.000015",
},
}

const result = parseOpenRouterModel({
id: "openrouter/horizon-alpha",
model: mockModel,
modality: "text",
maxTokens: 128000,
})

expect(result.maxTokens).toBe(32768)
expect(result.contextWindow).toBe(128000)
})

it("does not override max tokens for other models", () => {
const mockModel = {
name: "Other Model",
description: "Test model",
context_length: 128000,
max_completion_tokens: 64000,
pricing: {
prompt: "0.000003",
completion: "0.000015",
},
}

const result = parseOpenRouterModel({
id: "openrouter/other-model",
model: mockModel,
modality: "text",
maxTokens: 64000,
})

expect(result.maxTokens).toBe(64000)
expect(result.contextWindow).toBe(128000)
})
})
})
5 changes: 5 additions & 0 deletions src/api/providers/fetchers/openrouter.ts
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Expand Up @@ -232,5 +232,10 @@ export const parseOpenRouterModel = ({
modelInfo.maxTokens = anthropicModels["claude-3-7-sonnet-20250219:thinking"].maxTokens
}

// Set horizon-alpha model to 32k max tokens
if (id === "openrouter/horizon-alpha") {
modelInfo.maxTokens = 32768
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@roomote roomote bot Jul 31, 2025

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Could we add test coverage for this new model override? The existing test file at src/api/providers/fetchers/tests/openrouter.spec.ts has comprehensive assertions for other model-specific overrides (like Claude 3.7 Sonnet models on lines 184-209), but doesn't include a test case for the horizon-alpha model. Adding something like expect(models["openrouter/horizon-alpha"].maxTokens).toEqual(32768) would ensure this override works as expected.

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@roomote roomote bot Jul 31, 2025

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Would it be beneficial to define this as a named constant to make the intent clearer? While this follows the existing pattern used for other model overrides in the same file, something like const HORIZON_ALPHA_MAX_TOKENS = 32768 could improve readability and maintainability.

}

return modelInfo
}