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feat(kimi): register k3-256k in the picker and the price catalog #5447

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feat(kimi): register k3-256k in the picker and the price catalog #5447

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feat(kimi): register k3-256k in the picker and the price catalog
yuanyuan2026 Sep 21, 2026
c0484f4
test(usage): pin k3-256k entries in the overlay membership list
yuanyuan2026 Sep 21, 2026
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4 changes: 3 additions & 1 deletion src/providers/registry/model-seeds.ts
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Expand Up @@ -637,11 +637,13 @@ export const ALIBABA_TOKEN_PLAN_PRESERVE_REASONING = [
// entitlement tiers. Bare `k3` advertises the Moderato 256K ceiling; the local `[1m]`
// alias advertises Allegretto's 1M ceiling and is stripped before the upstream request.
// The separately billed Moonshot API uses `kimi-k3`.
// 260921: `k3-256k` is the same K3 served under the explicit ceiling id (verified live
// 260921: same 988-token scaffold and identity answer as bare `k3` on the same input).
// Evidence: https://www.kimi.com/code/docs/en/kimi-code/models.html
// https://www.kimi.com/code/docs/en/kimi-code/error-reference.html
export const KIMI_K3_STANDARD_CONTEXT_WINDOW = 262_144;
export const KIMI_K3_1M_CONTEXT_WINDOW = 1_048_576;
export const KIMI_CODING_K3_MODELS = ["k3", "k3[1m]"];
export const KIMI_CODING_K3_MODELS = ["k3", "k3[1m]", "k3-256k"];
// 260921 Kimi K2.8: `kimi-for-coding` is the stable subscription alias Moonshot re-points
// at each coding release. Live GET /coding/v1/models lists only kimi-for-coding[-highspeed],
// k3, k3-256k — the k2.x ids are retired from the subscription endpoint. Since K2.8 Preview
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2 changes: 2 additions & 0 deletions src/usage/expected-prices.ts
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Expand Up @@ -286,6 +286,7 @@ export const EXPECTED_PRICE_OVERLAYS: readonly ExpectedPriceOverlay[] = [
// kimi-code = API key surface (expected list price, not actual billing).
{ provider: "kimi", modelId: "k3", cost4: KIMI_K3, source: KIMI_PRICING, verifiedAt: "2026-07-20", status: "verified-derived" },
{ provider: "kimi", modelId: "k3[1m]", cost4: KIMI_K3, source: `derived: k3 (official docs: k3[1m] is the 1M-context compat notation for k3) ${KIMI_PRICING}`, verifiedAt: "2026-07-20", status: "verified-derived" },
{ provider: "kimi", modelId: "k3-256k", cost4: KIMI_K3, source: `derived: k3 (verified live 260921: same K3 served under the explicit ceiling id; identical prompt scaffold as bare k3) ${KIMI_PRICING}`, verifiedAt: "2026-09-21", status: "verified-derived" },
{ provider: "kimi", modelId: "kimi-k2.7-code", cost4: KIMI_K27_CODE, source: KIMI_PRICING, verifiedAt: "2026-07-20", status: "verified-derived" },
{ provider: "kimi", modelId: "kimi-k2.7-code-highspeed", cost4: KIMI_K27_CODE_HIGHSPEED, source: KIMI_PRICING, verifiedAt: "2026-07-20", status: "verified-derived" },
{ provider: "kimi", modelId: "kimi-k2.6", cost4: KIMI_K26, source: KIMI_PRICING, verifiedAt: "2026-07-20", status: "verified-derived" },
Expand All @@ -298,6 +299,7 @@ export const EXPECTED_PRICE_OVERLAYS: readonly ExpectedPriceOverlay[] = [
{ provider: "moonshot", modelId: "kimi-k2.5", cost4: KIMI_K25, source: KIMI_PRICING, verifiedAt: "2026-07-20", status: "verified-derived" },
{ provider: "kimi-code", modelId: "k3", cost4: KIMI_K3, source: KIMI_PRICING, verifiedAt: "2026-07-20", status: "verified-derived" },
{ provider: "kimi-code", modelId: "k3[1m]", cost4: KIMI_K3, source: `derived: k3 ${KIMI_PRICING}`, verifiedAt: "2026-07-20", status: "verified-derived" },
{ provider: "kimi-code", modelId: "k3-256k", cost4: KIMI_K3, source: `derived: k3 (verified live 260921: same K3 served under the explicit ceiling id) ${KIMI_PRICING}`, verifiedAt: "2026-09-21", status: "verified-derived" },
{ provider: "kimi-code", modelId: "kimi-k2.7-code", cost4: KIMI_K27_CODE, source: KIMI_PRICING, verifiedAt: "2026-07-20", status: "verified-derived" },
{ provider: "kimi-code", modelId: "kimi-k2.7-code-highspeed", cost4: KIMI_K27_CODE_HIGHSPEED, source: KIMI_PRICING, verifiedAt: "2026-07-20", status: "verified-derived" },
{ provider: "kimi-code", modelId: "kimi-k2.6", cost4: KIMI_K26, source: KIMI_PRICING, verifiedAt: "2026-07-20", status: "verified-derived" },
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2 changes: 1 addition & 1 deletion tests/providers/provider-registry-parity.test.ts
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Expand Up @@ -950,7 +950,7 @@ describe("provider registry parity", () => {
// k3-256k). Seeding a retired id in a metadata list would re-arm the model-rename
// migration on every boot (#5066); saved rows still naming one are repaired by
// MODEL_RENAMES instead.
const codingModels = ["k3", "k3[1m]", "kimi-for-coding"];
const codingModels = ["k3", "k3[1m]", "k3-256k", "kimi-for-coding"];
const parityLists = [
"noReasoningModels",
"noTemperatureModels",
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6 changes: 4 additions & 2 deletions tests/usage/usage-cost.test.ts
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Expand Up @@ -328,8 +328,8 @@ describe("resolveMatchedPrice", () => {
expect(resolveMatchedPrice("openrouter", "anthropic-claude-3.5-sonnet")).toBeNull();
});

test("16. shipped overlay membership: 126 keys, including canonical Fable 5.1, Opus 5, OpenCode Go and compatibility prices", () => {
expect(EXPECTED_PRICE_OVERLAYS.length).toBe(126);
test("16. shipped overlay membership: 128 keys, including canonical Fable 5.1, Opus 5, OpenCode Go and compatibility prices", () => {
expect(EXPECTED_PRICE_OVERLAYS.length).toBe(128);
expect(EXPECTED_PRICE_OVERLAYS.some(row => row.status === "unverified")).toBe(false);
const keys = new Set(EXPECTED_PRICE_OVERLAYS.map(row => `${row.provider}/${row.modelId}`));
for (const expected of [
Expand Down Expand Up @@ -380,6 +380,7 @@ describe("resolveMatchedPrice", () => {
"google-antigravity/gpt-oss-120b-medium",
"kimi/k3",
"kimi/k3[1m]",
"kimi/k3-256k",
"kimi/kimi-k2.7-code",
"kimi/kimi-k2.7-code-highspeed",
"kimi/kimi-k2.6",
Expand All @@ -392,6 +393,7 @@ describe("resolveMatchedPrice", () => {
"moonshot/kimi-k2.5",
"kimi-code/k3",
"kimi-code/k3[1m]",
"kimi-code/k3-256k",
"kimi-code/kimi-k2.7-code",
"kimi-code/kimi-k2.7-code-highspeed",
"kimi-code/kimi-k2.6",
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