Michael Suchacz c3b6284955 feat: add chat cost analytics backend (#23036) ...

Add cost tracking for LLM chat interactions with microdollar precision.

## Changes
- Add `chatcost` package for per-message cost calculation using
`shopspring/decimal` for intermediate arithmetic
- **Ceil rounding policy**: fractional micros round UP to next whole
micro (applied once after summing all components)
- Database migration: `total_cost_micros` BIGINT column with historical
backfill and `created_at` index
- API endpoints: per-user cost summary and admin rollup under
`/api/experimental/chats/cost/`
- SDK types: `ChatCostSummary`, `ChatCostModelBreakdown`,
`ChatCostUserRollup`
- Fix `modeloptionsgen` to handle `decimal.Decimal` as opaque numeric
type
- Update frontend pricing test fixtures for string decimal types

## Design decisions
- `NULL` = unpriced (no matching model config), `0` = free
- Reasoning tokens included in output tokens (no double-counting)
- Integer microdollars (BIGINT) for storage and API responses
- Price config uses `decimal.Decimal` for exact parsing; totals use
`int64`

Frontend: #23037

2026-03-13 18:30:49 +01:00

..

awsiamrds

test(coderd/database/awsiamrds): fix unclosed pubsub (#16202)

2025-01-20 17:25:31 +00:00

db2sdk

refactor: add chat_message_role enum and content_version column (#23042)

2026-03-13 16:47:36 +00:00

dbauthz

feat: add chat cost analytics backend (#23036)

2026-03-13 18:30:49 +01:00

dbfake

fix(coderd/database/dbfake): prevent cross-test job stealing in WorkspaceBuildBuilder (#22598)

2026-03-04 17:47:34 +00:00

dbgen

feat: backend support for creating and storing service accounts (#22698)

2026-03-11 10:19:08 -07:00

dbmetrics

feat: add chat cost analytics backend (#23036)

2026-03-13 18:30:49 +01:00

dbmock

feat: add chat cost analytics backend (#23036)

2026-03-13 18:30:49 +01:00

dbpurge

feat: implement non-brittle TestDBPurgeAuthorization (#21442)

2026-01-21 11:27:01 +11:00

dbrollup

chore: arrange imports in a standard way (#21452)

2026-01-08 15:24:11 +04:00

dbtestutil

chore: arrange imports in a standard way (#21452)

2026-01-08 15:24:11 +04:00

dbtime

fix(coderd/database): aggregate user engagement statistics by interval (#16150)

2025-01-16 17:34:53 +02:00

gen/dump

build(Makefile): enable parallel make -j gen with correct dependency graph (#22612)

2026-03-05 11:58:10 +00:00

gentest

fix: exclude provisioner_state from workspace_build_with_user view (#22159)

2026-02-23 22:46:17 -06:00

migrations

feat: add chat cost analytics backend (#23036)

2026-03-13 18:30:49 +01:00

provisionerjobs

chore: provisioner acquirer to respect organization ID of jobs (#13874)

2024-07-11 11:26:47 -05:00

pubsub

test: reduce unnecessary sleep durations in tests (#22552)

2026-03-03 10:19:00 -05:00

queries

feat: add chat cost analytics backend (#23036)

2026-03-13 18:30:49 +01:00

sdk2db

chore(coderd/database): remove deprecated db2sdk.List(Lazy)? methods (#21902)

2026-02-03 17:52:07 +00:00

.gitignore

…

check_constraint.go

feat: backend support for creating and storing service accounts (#22698)

2026-03-11 10:19:08 -07:00

connector.go

fix: use authenticated urls for pubsub (#14261)

2024-08-26 15:04:04 +00:00

constants.go

feat: allow TemplateAdmin to delete prebuilds via auth layer (#18333)

2025-06-20 17:36:32 +01:00

db_test.go

chore: remove references to dbtestutil.WillUsePostgres (#20436)

2025-10-23 14:24:54 +02:00

db.go

chore: remove dbmem comment references (#22056)

2026-02-12 09:06:33 +00:00

dump.sql

feat: add chat cost analytics backend (#23036)

2026-03-13 18:30:49 +01:00

errors.go

chore: improve build deadline code (#19203)

2025-08-07 11:00:31 +10:00

foreign_key_constraint.go

feat: add file/image attachment support to chat input (#22604)

2026-03-06 21:05:26 +02:00

generate.sh

build(Makefile): use atomic writes for remaining gen targets (#22670)

2026-03-05 22:32:18 +02:00

lock.go

fix: make boundary usage telemetry collection atomic (#21907)

2026-02-06 09:52:17 -07:00

modelmethods_internal_test.go

feat: add deployment-wide option to disable workspace sharing (#21172)

2025-12-09 08:13:09 -08:00

modelmethods.go

feat: backend support for creating and storing service accounts (#22698)

2026-03-11 10:19:08 -07:00

modelqueries_internal_test.go

feat(coderd): add task prompt modification endpoint (#20811)

2025-11-25 11:13:32 +00:00

modelqueries.go

chore(db): remove 23 unused database methods (#22999)

2026-03-12 21:32:57 +00:00

models.go

feat: add chat cost analytics backend (#23036)

2026-03-13 18:30:49 +01:00

no_slim.go

chore: avoid depending on rbac in slim builds (#17959)

2025-05-22 19:48:23 +10:00

oidcclaims_test.go

chore: remove dbmem (#18803)

2025-07-09 09:46:31 +02:00

pglocks.go

chore: update golang to 1.24.1 (#17035)

2025-03-26 01:56:39 -05:00

querier_test.go

refactor: add chat_message_role enum and content_version column (#23042)

2026-03-13 16:47:36 +00:00

querier.go

feat: add chat cost analytics backend (#23036)

2026-03-13 18:30:49 +01:00

queries.sql.go

feat: add chat cost analytics backend (#23036)

2026-03-13 18:30:49 +01:00

sqlc.yaml

feat: add chat cost analytics backend (#23036)

2026-03-13 18:30:49 +01:00

tx_test.go

chore: add tx metrics and logs for serialization errors (#15215)

2024-10-25 12:14:15 -04:00

tx.go

chore: add tx metrics and logs for serialization errors (#15215)

2024-10-25 12:14:15 -04:00

types.go

feat: add sharing info to /workspaces endpoint (#21049)

2025-12-15 08:42:08 -08:00

unique_constraint.go

feat: backend support for creating and storing service accounts (#22698)

2026-03-11 10:19:08 -07:00