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fix: add mergeToolResultText for Mistral/Devstral models in OpenRouter #10751

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fix: add mergeToolResultText for Mistral/Devstral models in OpenRouter #10751

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7 changes: 5 additions & 2 deletions src/api/providers/openrouter.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -231,12 +231,15 @@ export class OpenRouterHandler extends BaseProvider implements SingleCompletionH

// Convert Anthropic messages to OpenAI format.
// Pass normalization function for Mistral compatibility (requires 9-char alphanumeric IDs)
const isMistral = modelId.toLowerCase().includes("mistral")
// Also detect Devstral models which are part of the Mistral family
const isMistralFamily = modelId.toLowerCase().includes("mistral") || modelId.toLowerCase().includes("devstral")
let openAiMessages: OpenAI.Chat.ChatCompletionMessageParam[] = [
{ role: "system", content: systemPrompt },
...convertToOpenAiMessages(
messages,
isMistral ? { normalizeToolCallId: normalizeMistralToolCallId } : undefined,
isMistralFamily
? { normalizeToolCallId: normalizeMistralToolCallId, mergeToolResultText: true }
: undefined,
),
]

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