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fix(ai): preserve OpenRouter cached token semantics

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This commit is contained in:
Armin Ronacher
2026-05-16 11:50:24 +02:00
parent b4ee3aaeea
commit 87881ca686
2 changed files with 17 additions and 15 deletions
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14
packages/ai/test/openai-completions-tool-choice.test.ts
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@@ -819,7 +819,7 @@ describe("openai-completions tool_choice", () => {
expect(response.usage.totalTokens).toBe(43);
});
it("preserves prompt_tokens_details.cache_write_tokens from chunk usage", async () => {
it("preserves prompt_tokens_details cache read/write fields from chunk usage", async () => {
mockState.chunks = [
{
id: "chatcmpl-cache-write",
@@ -853,13 +853,14 @@ describe("openai-completions tool_choice", () => {
{ apiKey: "test" },
).result();
expect(response.usage.input).toBe(50);
expect(response.usage.cacheRead).toBe(20);
// cached_tokens is documented as cache reads; cache_write_tokens is separate.
expect(response.usage.input).toBe(20);
expect(response.usage.cacheRead).toBe(50);
expect(response.usage.cacheWrite).toBe(30);
expect(response.usage.totalTokens).toBe(105);
});
it("preserves prompt_tokens_details.cache_write_tokens from choice usage fallback", async () => {
it("preserves prompt_tokens_details cache read/write fields from choice usage fallback", async () => {
mockState.chunks = [
{
id: "chatcmpl-cache-write-choice",
@@ -898,8 +899,9 @@ describe("openai-completions tool_choice", () => {
{ apiKey: "test" },
).result();
expect(response.usage.input).toBe(50);
expect(response.usage.cacheRead).toBe(20);
// cached_tokens is documented as cache reads; cache_write_tokens is separate.
expect(response.usage.input).toBe(20);
expect(response.usage.cacheRead).toBe(50);
expect(response.usage.cacheWrite).toBe(30);
expect(response.usage.totalTokens).toBe(105);
});