From c2403d0f155b55ad067e742ed6f091312445d24e Mon Sep 17 00:00:00 2001 From: "Nazar H." <1905730+nazarhnatyshen@users.noreply.github.com> Date: Mon, 13 Apr 2026 20:20:06 -0500 Subject: [PATCH] fix(provider): guard reasoningSummary injection for @ai-sdk/openai-compatible providers (#22352) Co-authored-by: Nazar Hnatyshen --- packages/opencode/src/provider/transform.ts | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/packages/opencode/src/provider/transform.ts b/packages/opencode/src/provider/transform.ts index 8cdc48e243..bab056dae7 100644 --- a/packages/opencode/src/provider/transform.ts +++ b/packages/opencode/src/provider/transform.ts @@ -832,7 +832,16 @@ export namespace ProviderTransform { if (input.model.api.id.includes("gpt-5") && !input.model.api.id.includes("gpt-5-chat")) { if (!input.model.api.id.includes("gpt-5-pro")) { result["reasoningEffort"] = "medium" - result["reasoningSummary"] = "auto" + // Only inject reasoningSummary for providers that support it natively. + // @ai-sdk/openai-compatible proxies (e.g. LiteLLM) do not understand this + // parameter and return "Unknown parameter: 'reasoningSummary'". + if ( + input.model.api.npm === "@ai-sdk/openai" || + input.model.api.npm === "@ai-sdk/azure" || + input.model.api.npm === "@ai-sdk/github-copilot" + ) { + result["reasoningSummary"] = "auto" + } } // Only set textVerbosity for non-chat gpt-5.x models