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fix: handle Copilot GPT-5 reasoning streams #577

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Merged
will-lamerton merged 3 commits into from
Jun 16, 2026
+381 −10
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fix: handle Copilot GPT-5 reasoning streams #577

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d212c78
fix: handle copilot gpt-5 reasoning streams
EntropyParadigm Jun 16, 2026
ddd2496
fix: stabilize full test gate
EntropyParadigm Jun 16, 2026
7591a93
Revert "fix: stabilize full test gate"
EntropyParadigm Jun 16, 2026
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191 changes: 191 additions & 0 deletions patches/@ai-sdk__openai@3.0.71.patch
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Original file line number Diff line number Diff line change
@@ -0,0 +1,191 @@
diff --git a/dist/index.js b/dist/index.js
index f27f8c01885f41b8e43035f36075e2dc7e3bc148..abf9f82706c49f265ee6999c4d02b7e1a33b3605 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -6122,7 +6122,7 @@ var OpenAIResponsesLanguageModel = class {
}
});
} else if (value.item.type === "reasoning") {
- const activeReasoningPart = activeReasoning[value.item.id];
+ const activeReasoningPart = activeReasoning[value.item.id] ?? { encryptedContent: null, summaryParts: {} };
const summaryPartIndices = Object.entries(
activeReasoningPart.summaryParts
).filter(
@@ -6253,7 +6253,7 @@ var OpenAIResponsesLanguageModel = class {
}
} else if (value.type === "response.reasoning_summary_part.added") {
if (value.summary_index > 0) {
- const activeReasoningPart = activeReasoning[value.item_id];
+ const activeReasoningPart = activeReasoning[value.item_id] ?? (activeReasoning[value.item_id] = { encryptedContent: null, summaryParts: {} });
activeReasoningPart.summaryParts[value.summary_index] = "active";
for (const summaryIndex of Object.keys(
activeReasoningPart.summaryParts
@@ -6304,9 +6304,9 @@ var OpenAIResponsesLanguageModel = class {
}
}
});
- activeReasoning[value.item_id].summaryParts[value.summary_index] = "concluded";
+ (activeReasoning[value.item_id] ?? (activeReasoning[value.item_id] = { encryptedContent: null, summaryParts: {} })).summaryParts[value.summary_index] = "concluded";
} else {
- activeReasoning[value.item_id].summaryParts[value.summary_index] = "can-conclude";
+ (activeReasoning[value.item_id] ?? (activeReasoning[value.item_id] = { encryptedContent: null, summaryParts: {} })).summaryParts[value.summary_index] = "can-conclude";
}
} else if (isResponseFinishedChunk(value)) {
finishReason = {
diff --git a/dist/index.mjs b/dist/index.mjs
index ed14861f8afe781d9af820afe82e78b3286283d9..6c31410fba40cbed351801751499a00e9acf4f99 100644
--- a/dist/index.mjs
+++ b/dist/index.mjs
@@ -6226,7 +6226,7 @@ var OpenAIResponsesLanguageModel = class {
}
});
} else if (value.item.type === "reasoning") {
- const activeReasoningPart = activeReasoning[value.item.id];
+ const activeReasoningPart = activeReasoning[value.item.id] ?? { encryptedContent: null, summaryParts: {} };
const summaryPartIndices = Object.entries(
activeReasoningPart.summaryParts
).filter(
@@ -6357,7 +6357,7 @@ var OpenAIResponsesLanguageModel = class {
}
} else if (value.type === "response.reasoning_summary_part.added") {
if (value.summary_index > 0) {
- const activeReasoningPart = activeReasoning[value.item_id];
+ const activeReasoningPart = activeReasoning[value.item_id] ?? (activeReasoning[value.item_id] = { encryptedContent: null, summaryParts: {} });
activeReasoningPart.summaryParts[value.summary_index] = "active";
for (const summaryIndex of Object.keys(
activeReasoningPart.summaryParts
@@ -6408,9 +6408,9 @@ var OpenAIResponsesLanguageModel = class {
}
}
});
- activeReasoning[value.item_id].summaryParts[value.summary_index] = "concluded";
+ (activeReasoning[value.item_id] ?? (activeReasoning[value.item_id] = { encryptedContent: null, summaryParts: {} })).summaryParts[value.summary_index] = "concluded";
} else {
- activeReasoning[value.item_id].summaryParts[value.summary_index] = "can-conclude";
+ (activeReasoning[value.item_id] ?? (activeReasoning[value.item_id] = { encryptedContent: null, summaryParts: {} })).summaryParts[value.summary_index] = "can-conclude";
}
} else if (isResponseFinishedChunk(value)) {
finishReason = {
diff --git a/dist/internal/index.js b/dist/internal/index.js
index 141bfb10833c47aab12083cf3404e0ca9612232f..53b02919260d4fa7b9e71ebe301e1c2810740735 100644
--- a/dist/internal/index.js
+++ b/dist/internal/index.js
@@ -6391,7 +6391,7 @@ var OpenAIResponsesLanguageModel = class {
}
});
} else if (value.item.type === "reasoning") {
- const activeReasoningPart = activeReasoning[value.item.id];
+ const activeReasoningPart = activeReasoning[value.item.id] ?? { encryptedContent: null, summaryParts: {} };
const summaryPartIndices = Object.entries(
activeReasoningPart.summaryParts
).filter(
@@ -6522,7 +6522,7 @@ var OpenAIResponsesLanguageModel = class {
}
} else if (value.type === "response.reasoning_summary_part.added") {
if (value.summary_index > 0) {
- const activeReasoningPart = activeReasoning[value.item_id];
+ const activeReasoningPart = activeReasoning[value.item_id] ?? (activeReasoning[value.item_id] = { encryptedContent: null, summaryParts: {} });
activeReasoningPart.summaryParts[value.summary_index] = "active";
for (const summaryIndex of Object.keys(
activeReasoningPart.summaryParts
@@ -6573,9 +6573,9 @@ var OpenAIResponsesLanguageModel = class {
}
}
});
- activeReasoning[value.item_id].summaryParts[value.summary_index] = "concluded";
+ (activeReasoning[value.item_id] ?? (activeReasoning[value.item_id] = { encryptedContent: null, summaryParts: {} })).summaryParts[value.summary_index] = "concluded";
} else {
- activeReasoning[value.item_id].summaryParts[value.summary_index] = "can-conclude";
+ (activeReasoning[value.item_id] ?? (activeReasoning[value.item_id] = { encryptedContent: null, summaryParts: {} })).summaryParts[value.summary_index] = "can-conclude";
}
} else if (isResponseFinishedChunk(value)) {
finishReason = {
diff --git a/dist/internal/index.mjs b/dist/internal/index.mjs
index 87a8d4b8628cf9343793e496e4720a1479030b3e..19e9d0b8cca087d540cac11ecc160b561f5b1583 100644
--- a/dist/internal/index.mjs
+++ b/dist/internal/index.mjs
@@ -6471,7 +6471,7 @@ var OpenAIResponsesLanguageModel = class {
}
});
} else if (value.item.type === "reasoning") {
- const activeReasoningPart = activeReasoning[value.item.id];
+ const activeReasoningPart = activeReasoning[value.item.id] ?? { encryptedContent: null, summaryParts: {} };
const summaryPartIndices = Object.entries(
activeReasoningPart.summaryParts
).filter(
@@ -6602,7 +6602,7 @@ var OpenAIResponsesLanguageModel = class {
}
} else if (value.type === "response.reasoning_summary_part.added") {
if (value.summary_index > 0) {
- const activeReasoningPart = activeReasoning[value.item_id];
+ const activeReasoningPart = activeReasoning[value.item_id] ?? (activeReasoning[value.item_id] = { encryptedContent: null, summaryParts: {} });
activeReasoningPart.summaryParts[value.summary_index] = "active";
for (const summaryIndex of Object.keys(
activeReasoningPart.summaryParts
@@ -6653,9 +6653,9 @@ var OpenAIResponsesLanguageModel = class {
}
}
});
- activeReasoning[value.item_id].summaryParts[value.summary_index] = "concluded";
+ (activeReasoning[value.item_id] ?? (activeReasoning[value.item_id] = { encryptedContent: null, summaryParts: {} })).summaryParts[value.summary_index] = "concluded";
} else {
- activeReasoning[value.item_id].summaryParts[value.summary_index] = "can-conclude";
+ (activeReasoning[value.item_id] ?? (activeReasoning[value.item_id] = { encryptedContent: null, summaryParts: {} })).summaryParts[value.summary_index] = "can-conclude";
}
} else if (isResponseFinishedChunk(value)) {
finishReason = {
diff --git a/src/responses/openai-responses-language-model.ts b/src/responses/openai-responses-language-model.ts
index d9ad3bd18c7bb90ee83a60b1bfcfd0acc71fa5c5..743e91c130225ebcc44e04869d858ee46f4359d3 100644
--- a/src/responses/openai-responses-language-model.ts
+++ b/src/responses/openai-responses-language-model.ts
@@ -1773,7 +1773,10 @@ export class OpenAIResponsesLanguageModel implements LanguageModelV3 {
} satisfies InferSchema<typeof shellOutputSchema>,
});
} else if (value.item.type === 'reasoning') {
- const activeReasoningPart = activeReasoning[value.item.id];
+ const activeReasoningPart = activeReasoning[value.item.id] ?? {
+ encryptedContent: null,
+ summaryParts: {},
+ };

// get all active or can-conclude summary parts' ids
// to conclude ongoing reasoning parts:
@@ -1933,7 +1936,11 @@ export class OpenAIResponsesLanguageModel implements LanguageModelV3 {
} else if (value.type === 'response.reasoning_summary_part.added') {
// the first reasoning start is pushed in isResponseOutputItemAddedReasoningChunk
if (value.summary_index > 0) {
- const activeReasoningPart = activeReasoning[value.item_id]!;
+ const activeReasoningPart = activeReasoning[value.item_id] ??
+ (activeReasoning[value.item_id] = {
+ encryptedContent: null,
+ summaryParts: {},
+ });
Comment on lines +158 to +162

activeReasoningPart.summaryParts[value.summary_index] =
'active';
@@ -1999,15 +2006,19 @@ export class OpenAIResponsesLanguageModel implements LanguageModelV3 {
});

// mark the summary part as concluded
- activeReasoning[value.item_id]!.summaryParts[
- value.summary_index
- ] = 'concluded';
+ (activeReasoning[value.item_id] ??
+ (activeReasoning[value.item_id] = {
+ encryptedContent: null,
+ summaryParts: {},
+ })).summaryParts[value.summary_index] = 'concluded';
} else {
// mark the summary part as can-conclude only
// because we need to have a final summary part with the encrypted content
- activeReasoning[value.item_id]!.summaryParts[
- value.summary_index
- ] = 'can-conclude';
+ (activeReasoning[value.item_id] ??
+ (activeReasoning[value.item_id] = {
+ encryptedContent: null,
+ summaryParts: {},
+ })).summaryParts[value.summary_index] = 'can-conclude';
}
} else if (isResponseFinishedChunk(value)) {
finishReason = {
5 changes: 3 additions & 2 deletions pnpm-lock.yaml
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1 change: 1 addition & 0 deletions pnpm-workspace.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -29,4 +29,5 @@ onlyBuiltDependencies:
- keytar

patchedDependencies:
'@ai-sdk/openai@3.0.71': patches/@ai-sdk__openai@3.0.71.patch
ink@6.8.0: patches/ink@6.8.0.patch
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