diff --git a/packages/opencode/script/bench-session-usage-migration.ts b/packages/opencode/script/bench-session-usage-migration.ts
deleted file mode 100644
index 0bd071d2a1..0000000000
--- a/packages/opencode/script/bench-session-usage-migration.ts
+++ /dev/null
@@ -1,140 +0,0 @@
-#!/usr/bin/env bun
-
-import { rmSync } from "fs"
-import path from "path"
-import { Effect, ManagedRuntime } from "effect"
-import { eq } from "drizzle-orm"
-
-const args = new Map(
-  Bun.argv.slice(2).flatMap((arg) => {
-    const match = /^--([^=]+)=(.*)$/.exec(arg)
-    return match ? [[match[1], match[2]] as const] : []
-  }),
-)
-
-const sessions = Number(args.get("sessions") ?? 10_000)
-const messages = Number(args.get("messages") ?? 20)
-const batch = Number(args.get("batch") ?? 1_000)
-const dbPath = path.resolve(args.get("db") ?? path.join("/tmp", "opencode-session-usage-bench.db"))
-const keep = args.get("keep") === "true"
-
-if (!keep) rmSync(dbPath, { force: true })
-process.env.OPENCODE_DB = dbPath
-
-const started = performance.now()
-const [{ Database }, { SessionTable, MessageTable }] = await Promise.all([
-  import("../src/storage/db"),
-  import("../src/session/session.sql"),
-])
-
-const now = Date.now()
-const expectedCost = sessions * messages * 0.001
-const db = Database.Client().$client
-
-console.log(`database: ${dbPath}`)
-console.log(`seed: ${sessions.toLocaleString()} sessions x ${messages.toLocaleString()} assistant messages`)
-
-db.transaction(() => {
-  db.query(
-    `INSERT INTO project (id, worktree, vcs, name, icon_url, icon_url_override, icon_color, time_created, time_updated, time_initialized, sandboxes, commands)
-     VALUES ($id, $worktree, NULL, $name, NULL, NULL, NULL, $time, $time, $time, $sandboxes, NULL)`,
-  ).run({
-    $id: "global",
-    $worktree: process.cwd(),
-    $name: "bench",
-    $time: now,
-    $sandboxes: JSON.stringify([]),
-  })
-})()
-
-const insertSession = db.query(
-  `INSERT INTO session (
-    id, project_id, workspace_id, parent_id, slug, directory, path, title, version, share_url,
-    summary_additions, summary_deletions, summary_files, summary_diffs, cost,
-    tokens_input, tokens_output, tokens_reasoning, tokens_cache_read, tokens_cache_write,
-    revert, permission, agent, model, time_created, time_updated, time_compacting, time_archived
-  ) VALUES (
-    $id, 'global', NULL, NULL, $slug, $directory, $path, $title, 'bench', NULL,
-    NULL, NULL, NULL, NULL, 0,
-    0, 0, 0, 0, 0,
-    NULL, NULL, NULL, NULL, $time, $time, NULL, NULL
-  )`,
-)
-const insertMessage = db.query(
-  `INSERT INTO message (id, session_id, time_created, time_updated, data)
-   VALUES ($id, $session, $time, $time, $data)`,
-)
-
-for (let offset = 0; offset < sessions; offset += batch) {
-  const end = Math.min(offset + batch, sessions)
-  db.transaction(() => {
-    for (let i = offset; i < end; i++) {
-      const sessionID = `ses_bench_${i.toString().padStart(8, "0")}`
-      insertSession.run({
-        $id: sessionID,
-        $slug: `bench-${i}`,
-        $directory: process.cwd(),
-        $path: ".",
-        $title: `Bench ${i}`,
-        $time: now + i,
-      })
-      for (let j = 0; j < messages; j++) {
-        insertMessage.run({
-          $id: `msg_bench_${i.toString().padStart(8, "0")}_${j.toString().padStart(4, "0")}`,
-          $session: sessionID,
-          $time: now + i + j,
-          $data: JSON.stringify({
-            role: "assistant",
-            time: { created: now + i + j, completed: now + i + j + 1 },
-            parentID: `msg_parent_${i.toString().padStart(8, "0")}_${j.toString().padStart(4, "0")}`,
-            modelID: "bench-model",
-            providerID: "bench-provider",
-            mode: "build",
-            agent: "bench",
-            path: { cwd: process.cwd(), root: process.cwd() },
-            cost: 0.001,
-            tokens: { input: 100, output: 50, reasoning: 10, cache: { read: 5, write: 2 } },
-          }),
-        })
-      }
-    }
-  })()
-  console.log(`seeded ${end.toLocaleString()} sessions`)
-}
-
-console.log(`seed time: ${Math.round(performance.now() - started).toLocaleString()}ms`)
-
-const [{ DataMigration }, { DataMigrationTable }] = await Promise.all([
-  import("../src/data-migration"),
-  import("../src/data-migration.sql"),
-])
-const runtime = ManagedRuntime.make(DataMigration.defaultLayer)
-const migrationStarted = performance.now()
-await runtime.runPromise(Effect.gen(function* () {
-  return yield* DataMigration.Service
-}))
-
-for (;;) {
-  const completed = Database.use((db) =>
-    db
-      .select({ name: DataMigrationTable.name })
-      .from(DataMigrationTable)
-      .where(eq(DataMigrationTable.name, "session_usage_from_messages"))
-      .get(),
-  )
-  if (completed) break
-  await Bun.sleep(100)
-}
-
-const migrationMs = performance.now() - migrationStarted
-const totals = db
-  .query(`SELECT COUNT(*) AS sessions, SUM(cost) AS cost, SUM(tokens_input) AS input FROM session`)
-  .get() as { sessions: number; cost: number; input: number }
-
-await runtime.dispose()
-Database.close()
-
-console.log(`migration time: ${Math.round(migrationMs).toLocaleString()}ms`)
-console.log(`total time: ${Math.round(performance.now() - started).toLocaleString()}ms`)
-console.log(`result: ${totals.sessions.toLocaleString()} sessions, cost=${totals.cost}, input=${totals.input}`)
-console.log(`expected: cost=${expectedCost}, input=${sessions * messages * 100}`)