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fix: update deepseek-v4-pro reasoning efforts and mappings #1236

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fix: update deepseek-v4-pro reasoning efforts and mappings #1236

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1bd5084
fix: update deepseek-v4-pro reasoning efforts and mappings
WHMHammer Aug 12, 2026
2757402
fix: deepseek-v4-pro unit testing
WHMHammer Aug 12, 2026
703577d
fix: remove deepseek price comment changes
WHMHammer Aug 13, 2026
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4 changes: 2 additions & 2 deletions packages/types/src/providers/deepseek.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -14,7 +14,7 @@ export const deepSeekModels = {
contextWindow: 1_000_000,
supportsImages: true,
supportsPromptCache: true,
supportsReasoningEffort: ["disable", "low", "high", "max"], // Updated 2026-08-01
supportsReasoningEffort: ["disable", "low", "high", "max"], // Updated 2026-08-13
preserveReasoning: true,
reasoningEffort: "high",
inputPrice: 0, // the inputs are priced as cache read/write, so `inputPrice` should be 0
Expand All @@ -29,7 +29,7 @@ export const deepSeekModels = {
contextWindow: 1_000_000,
supportsImages: true,
supportsPromptCache: true,
supportsReasoningEffort: ["disable", "high", "max"], // Updated 2026-08-01
supportsReasoningEffort: ["disable", "low", "high", "max"], // Updated 2026-08-13
preserveReasoning: true,
reasoningEffort: "high",
inputPrice: 0, // the inputs are priced as cache read/write, so `inputPrice` should be 0
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13 changes: 12 additions & 1 deletion src/api/providers/__tests__/deepseek.spec.ts
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Expand Up @@ -617,6 +617,7 @@ describe("DeepSeekHandler", () => {

describe("normalizeDeepSeekReasoningEffort", () => {
// https://api-docs.deepseek.com/guides/thinking_mode/
// updated on 2026-08-13
it("should map acceptable reasoning efforts the same way as stated by the official documentation", async () => {
const mappings: {
modelId: DeepSeekModelId
Expand All @@ -633,6 +634,11 @@ describe("DeepSeekHandler", () => {
rawReasoningEffort: "low",
mappedReasoningEffort: "low",
},
{
modelId: "deepseek-v4-flash",
rawReasoningEffort: "medium",
mappedReasoningEffort: "high",
},
{
modelId: "deepseek-v4-flash",
rawReasoningEffort: "high",
Expand All @@ -656,6 +662,11 @@ describe("DeepSeekHandler", () => {
{
modelId: "deepseek-v4-pro",
rawReasoningEffort: "low",
mappedReasoningEffort: "low",
},
{
modelId: "deepseek-v4-pro",
rawReasoningEffort: "medium",
mappedReasoningEffort: "high",
},
{
Expand All @@ -666,7 +677,7 @@ describe("DeepSeekHandler", () => {
{
modelId: "deepseek-v4-pro",
rawReasoningEffort: "xhigh",
mappedReasoningEffort: "max",
mappedReasoningEffort: "high",
},
{
modelId: "deepseek-v4-pro",
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22 changes: 3 additions & 19 deletions src/api/providers/deepseek.ts
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Expand Up @@ -46,38 +46,22 @@ export const normalizeDeepSeekReasoningEffort = (
modelId: DeepSeekModelId,
reasoningEffort?: string,
): "low" | "high" | "max" | undefined => {
// still check the modelId so non-supported models won't produce reasoning efforts
switch (modelId) {
case "deepseek-v4-flash":
case "deepseek-v4-pro":
switch (reasoningEffort) {
case "low":
return "low"

case "medium":
case "high":
return "high"

case "xhigh":
return "high"

case "max":
return "max"
}
break

case "deepseek-v4-pro":
switch (reasoningEffort) {
case "low":
return "high"

case "high":
return "high"

case "xhigh":
return "max"

case "max":
return "max"
}
break
}

return undefined
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