diff --git a/packages/ui/client/composables/client/static.ts b/packages/ui/client/composables/client/static.ts
index 7c560a9c4..89c58fffb 100644
--- a/packages/ui/client/composables/client/static.ts
+++ b/packages/ui/client/composables/client/static.ts
@@ -70,10 +70,10 @@ export function createStaticClient(): VitestClient {
     rpc: undefined!,
     reconnect: () => registerMetadata(),
     waitForConnection: async () => {},
-  })
+  }) as VitestClient
 
-  ctx.state.filesMap = reactive(ctx.state.filesMap)
-  ctx.state.idMap = reactive(ctx.state.idMap)
+  ctx.state.filesMap = reactive(ctx.state.filesMap) as StateManager['filesMap']
+  ctx.state.idMap = reactive(ctx.state.idMap) as StateManager['idMap']
 
   async function registerMetadata() {
     const content = await window.HTML_REPORT_METADATA!
diff --git a/packages/vitest/src/defaults.ts b/packages/vitest/src/defaults.ts
index b23b0eb91..ecaabfe27 100644
--- a/packages/vitest/src/defaults.ts
+++ b/packages/vitest/src/defaults.ts
@@ -1,6 +1,6 @@
 import type {
-  BenchmarkUserOptions,
   CoverageOptions,
+  ResolvedBenchmarkOptions,
   UserConfig,
 } from './node/types/config'
 import type { FieldsWithDefaultValues } from './node/types/coverage'
@@ -14,13 +14,12 @@ export const defaultExclude: string[] = [
   '**/node_modules/**',
   '**/.git/**',
 ]
-export const benchmarkConfigDefaults: Required<BenchmarkUserOptions> = {
+export const benchmarkConfigDefaults: ResolvedBenchmarkOptions = {
   enabled: false,
   include: ['**/*.{bench,benchmark}.?(c|m)[jt]s?(x)'],
   exclude: defaultExclude,
   includeSource: [],
   retainSamples: false,
-  provider: 'default',
   suppressExportGetterWarnings: false,
   // Populated automatically when Vitest clones the parent project; the default
   // here applies to the (unused) raw config that's never run as a benchmark.
diff --git a/packages/vitest/src/node/config/resolveConfig.ts b/packages/vitest/src/node/config/resolveConfig.ts
index f61d35e7b..05810c53b 100644
--- a/packages/vitest/src/node/config/resolveConfig.ts
+++ b/packages/vitest/src/node/config/resolveConfig.ts
@@ -294,7 +294,7 @@ export function resolveTestConfig(
     ...benchmarkConfigDefaults,
     ...resolved.benchmark,
   }
-  if (resolved.benchmark.provider && resolved.benchmark.provider !== 'default') {
+  if (resolved.benchmark.provider) {
     resolved.benchmark.provider = resolvePath(
       resolved.benchmark.provider,
       resolved.root,
diff --git a/packages/vitest/src/node/types/benchmark.ts b/packages/vitest/src/node/types/benchmark.ts
index a220cf1bb..27abfcca3 100644
--- a/packages/vitest/src/node/types/benchmark.ts
+++ b/packages/vitest/src/node/types/benchmark.ts
@@ -30,15 +30,13 @@ export interface BenchmarkUserOptions {
 
   /**
    * The benchmark provider that executes registered benchmarks and produces
-   * their results. Either the built-in `'default'` provider (backed by
-   * tinybench) or a path to a module whose default export implements
+   * their results. Provide a path to a module whose default export implements
    * `BenchmarkProvider`. The path is resolved relative to the project
-   * root.
+   * root. If not specified, the built-in provider is used.
    *
-   * @default 'default'
    * @experimental
    */
-  provider?: 'default' | (string & {})
+  provider?: string
 
   /**
    * Disable warnings when a benchmark accesses module export getters too many times.
@@ -55,3 +53,7 @@ export interface BenchmarkUserOptions {
    */
   projectName?: string
 }
+
+export type ResolvedBenchmarkOptions = Omit<Required<BenchmarkUserOptions>, 'provider'> & {
+  provider?: string | undefined
+}
diff --git a/packages/vitest/src/node/types/config.ts b/packages/vitest/src/node/types/config.ts
index 2289dae72..582cceb26 100644
--- a/packages/vitest/src/node/types/config.ts
+++ b/packages/vitest/src/node/types/config.ts
@@ -20,13 +20,13 @@ import type { TestCase, TestModule, TestSuite } from '../reporters/reported-task
 import type { TestSequencerConstructor } from '../sequencers/types'
 import type { VCSProvider } from '../vcs/vcs'
 import type { WatcherTriggerPattern } from '../watcher'
-import type { BenchmarkUserOptions } from './benchmark'
+import type { BenchmarkUserOptions, ResolvedBenchmarkOptions } from './benchmark'
 import type { BrowserConfigOptions, BrowserServerContribution, ResolvedBrowserOptions } from './browser'
 import type { CoverageOptions, ResolvedCoverageOptions } from './coverage'
 import type { Reporter } from './reporter'
 
 export type { CoverageOptions, ResolvedCoverageOptions }
-export type { BenchmarkUserOptions }
+export type { BenchmarkUserOptions, ResolvedBenchmarkOptions }
 export type { RuntimeConfig, SerializedConfig } from '../../runtime/config'
 export type { SequenceHooks, SequenceSetupFiles } from '../../runtime/runner/types'
 export type { BrowserConfigOptions, BrowserInstanceOption, BrowserScript } from './browser'
@@ -1227,7 +1227,7 @@ export interface ResolvedConfig
   cliExclude?: string[]
 
   project: string[]
-  benchmark: Required<BenchmarkUserOptions>
+  benchmark: ResolvedBenchmarkOptions
   shard?: {
     index: number
     count: number
diff --git a/packages/vitest/src/runtime/benchmark.ts b/packages/vitest/src/runtime/benchmark.ts
index 204a658d2..41f95a4c6 100644
--- a/packages/vitest/src/runtime/benchmark.ts
+++ b/packages/vitest/src/runtime/benchmark.ts
@@ -129,7 +129,7 @@ export function resolveBenchmarkProvider(
 ): Promise<BenchmarkProvider> {
   if (!cachedProvider) {
     const provider = config.benchmark.provider
-    cachedProvider = provider === 'default' || !provider
+    cachedProvider = !provider
       ? Promise.resolve(createDefaultBenchmarkProvider(config))
       : loadProviderModule(provider, moduleRunner)
   }
diff --git a/packages/vitest/src/runtime/benchmark/default-provider.ts b/packages/vitest/src/runtime/benchmark/default-provider.ts
index f5fb3f57a..37fd5a17d 100644
--- a/packages/vitest/src/runtime/benchmark/default-provider.ts
+++ b/packages/vitest/src/runtime/benchmark/default-provider.ts
@@ -9,7 +9,7 @@ const now = globalThis.performance
 
 /**
  * The built-in benchmark provider, backed by tinybench. Selected when
- * `benchmark.provider` is `'default'` (the default).
+ * `benchmark.provider` is not configured.
  */
 export function createDefaultBenchmarkProvider(config: SerializedConfig): BenchmarkProvider {
   let benchIdx = 0
diff --git a/packages/vitest/src/runtime/config.ts b/packages/vitest/src/runtime/config.ts
index 22e2bbe3e..4c66f5606 100644
--- a/packages/vitest/src/runtime/config.ts
+++ b/packages/vitest/src/runtime/config.ts
@@ -143,7 +143,7 @@ export interface SerializedConfig {
   benchmark: {
     enabled: boolean
     retainSamples: boolean
-    provider: string
+    provider: string | undefined
     suppressExportGetterWarnings: boolean
     projectName: string
   }
diff --git a/packages/vitest/src/runtime/runners/test.ts b/packages/vitest/src/runtime/runners/test.ts
index 0d5313c64..42d2c5bb4 100644
--- a/packages/vitest/src/runtime/runners/test.ts
+++ b/packages/vitest/src/runtime/runners/test.ts
@@ -243,9 +243,7 @@ export class TestRunner implements VitestTestRunner {
     Object.defineProperty(context, 'bench', {
       get() {
         if (!_bench) {
-          _bench = createBench(context.task, runnerConfig, {
-            import: id => moduleRunner.import(id),
-          })
+          _bench = createBench(context.task, runnerConfig, moduleRunner)
           benchInstances.set(context.task, _bench)
         }
         return _bench