66 lines
3.0 KiB
SQL
66 lines
3.0 KiB
SQL
-- +goose Up
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-- Durable AI cost accounting, deliberately separate from ai_call_logs.
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--
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-- ai_call_logs holds full prompts and is pruned after 7 days. Cost has to outlive
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-- that by years, so usage is rolled up per day / company / user / model / role at
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-- capture time. One row per combination per day keeps three years small: a busy
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-- tenant with 5 users and 3 roles adds ~45 rows a day, not one per product.
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--
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-- Cost is stored in micro-USD integers, never floats: summing millions of
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-- fractional-cent calls in float drifts, and money must add up exactly.
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CREATE TABLE IF NOT EXISTS ai_model_prices (
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model TEXT PRIMARY KEY,
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-- Micro-USD per 1,000,000 tokens. $0.20/1M = 200000 micros.
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input_micros_per_mtok BIGINT NOT NULL DEFAULT 0,
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cached_input_micros_per_mtok BIGINT NOT NULL DEFAULT 0,
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output_micros_per_mtok BIGINT NOT NULL DEFAULT 0,
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source TEXT NOT NULL DEFAULT '',
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updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
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);
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-- OpenAI GPT-5.6 family, rates effective 2026-07-30.
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-- Admin can UPDATE these when list prices change; already-recorded cost is never
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-- recalculated, so history keeps the price that applied at the time.
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INSERT INTO ai_model_prices (model, input_micros_per_mtok, cached_input_micros_per_mtok, output_micros_per_mtok, source)
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VALUES
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('gpt-5.6-luna', 200000, 20000, 1200000, 'openai list price 2026-07-30'),
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('gpt-5.6-terra', 2000000, 200000, 12000000, 'openai list price 2026-07-30'),
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('gpt-5.6-sol', 5000000, 500000, 30000000, 'openai list price 2026-07-30')
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ON CONFLICT (model) DO NOTHING;
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CREATE TABLE IF NOT EXISTS ai_usage_daily (
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day DATE NOT NULL,
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-- Nil UUID rather than NULL: these are primary-key columns and NULL would let
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-- duplicate rows accumulate instead of upserting.
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company_id UUID NOT NULL DEFAULT '00000000-0000-0000-0000-000000000000',
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user_id UUID NOT NULL DEFAULT '00000000-0000-0000-0000-000000000000',
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model TEXT NOT NULL DEFAULT '',
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role TEXT NOT NULL DEFAULT 'other',
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calls BIGINT NOT NULL DEFAULT 0,
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failed_calls BIGINT NOT NULL DEFAULT 0,
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prompt_tokens BIGINT NOT NULL DEFAULT 0,
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cached_prompt_tokens BIGINT NOT NULL DEFAULT 0,
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completion_tokens BIGINT NOT NULL DEFAULT 0,
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total_tokens BIGINT NOT NULL DEFAULT 0,
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cost_micros BIGINT NOT NULL DEFAULT 0,
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updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
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PRIMARY KEY (day, company_id, user_id, model, role)
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);
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-- No FK to companies/users: cost history must survive a tenant or user being
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-- deleted, otherwise the yearly total silently drops.
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CREATE INDEX IF NOT EXISTS ai_usage_daily_company_day_idx
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ON ai_usage_daily (company_id, day DESC);
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CREATE INDEX IF NOT EXISTS ai_usage_daily_user_day_idx
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ON ai_usage_daily (user_id, day DESC);
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CREATE INDEX IF NOT EXISTS ai_usage_daily_day_idx
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ON ai_usage_daily (day DESC);
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-- +goose Down
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DROP TABLE IF EXISTS ai_usage_daily;
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DROP TABLE IF EXISTS ai_model_prices;
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