Files
learnharness/src/server/pricing.ts
T

55 lines
2.8 KiB
TypeScript

/** Read-time API-dollar estimates. Pi owns both rates and arithmetic.
* Catalog resolution is key-independent; no provider dispatch/auth is needed.
* Never mutate saved native messages: calculateCost mutates its usage.cost.
*/
import { calculateCost, type Usage } from "@earendil-works/pi-ai";
import { piModels } from "../agent/models.ts";
import { CUSTOM_PROVIDER } from "../core/auth-keys.ts";
import { CLAUDE_CODE_PROVIDER } from "../core/contracts/claude-code.ts";
import type { CallUsage, ChatRecord, JobRecord, TurnUsage } from "../core/contracts.ts";
import { isSubscriptionModel, sessionCost as foldSessionCost, turnCost as foldTurnCost, jobCost as foldJobCost } from "../core/prices.ts";
function catalogModel(id: string) {
const colon = id.indexOf(":");
// Native CLI routing determines billing. Adapter zero-rate placeholders
// must never become an apparent $0 estimate or subscription classification.
if (colon < 0 || isSubscriptionModel(id) || [CLAUDE_CODE_PROVIDER, CUSTOM_PROVIDER.id].includes(id.slice(0, colon))) return undefined;
return piModels().getModel(id.slice(0, colon), id.slice(colon + 1));
}
export function callCost(call: Partial<CallUsage>, modelId: string): number | null {
const model = catalogModel(modelId);
if (!model || call.inputTokens === undefined || call.outputTokens === undefined) return null;
const input = call.inputTokens;
const output = call.outputTokens;
const cacheRead = call.cacheReadTokens ?? 0;
const cacheWrite = call.cacheWriteTokens ?? 0;
const cacheWrite1h = call.cacheWrite1hTokens ?? 0;
if ([input, output, cacheRead, cacheWrite, cacheWrite1h].some((v) => !Number.isFinite(v) || v < 0) || cacheWrite1h > cacheWrite) return null;
// Old records discarded this split. Only price them if it cannot affect
// the result; do not invent short-retention precision from a missing field.
if (cacheWrite > 0 && call.cacheWrite1hTokens === undefined &&
[model.cost, ...(model.cost.tiers ?? [])].some((rate) => rate.cacheWrite !== 2 * rate.input)) return null;
const usage: Usage = {
input, output, cacheRead, cacheWrite, cacheWrite1h,
totalTokens: input + output + cacheRead + cacheWrite,
cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, total: 0 },
};
const total = calculateCost(model, usage).total;
return Number.isFinite(total) && total >= 0 ? total : null;
}
export function turnCost(turn: TurnUsage): number | null {
return foldTurnCost(turn, callCost);
}
export function sessionCost(record: Pick<ChatRecord, "turns">) {
return foldSessionCost(record, callCost);
}
export function jobCost(job: Pick<JobRecord, "usage">): number | null {
const usage = job.usage;
if (!usage || usage.steps < 1) return null;
const hasCalls = usage.calls?.length === usage.steps;
if (!hasCalls && usage.steps > 1 && catalogModel(usage.model)?.cost.tiers?.length) return null;
return foldJobCost(job, callCost);
}