diff --git a/core/generated-sources/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/add.kt b/core/generated-sources/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/add.kt
index ab8ccac54..ff7be2a15 100644
--- a/core/generated-sources/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/add.kt
+++ b/core/generated-sources/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/add.kt
@@ -174,8 +174,8 @@ public class AddDsl<T>(@PublishedApi internal val df: DataFrame<T>) : ColumnsCon
         noinline expression: RowExpression<T, R>
     ): Boolean = add(df.mapToColumn(name, infer, expression))
 
-    public inline fun <reified R> expr(noinline expression: RowExpression<T, R>): DataColumn<R> {
-        return df.mapToColumn("", Infer.Nulls, expression)
+    public inline fun <reified R> expr(infer: Infer = Infer.Nulls, noinline expression: RowExpression<T, R>): DataColumn<R> {
+        return df.mapToColumn("", infer, expression)
     }
 
     public inline infix fun <reified R> String.from(noinline expression: RowExpression<T, R>): Boolean =
diff --git a/core/generated-sources/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/toDataFrame.kt b/core/generated-sources/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/toDataFrame.kt
index c755f0617..4cf7f2319 100644
--- a/core/generated-sources/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/toDataFrame.kt
+++ b/core/generated-sources/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/toDataFrame.kt
@@ -153,8 +153,8 @@ public abstract class CreateDataFrameDsl<T> : TraversePropertiesDsl {
         body: (TraversePropertiesDsl.() -> Unit)? = null,
     )
 
-    public inline fun <reified R> expr(noinline expression: (T) -> R): DataColumn<R> =
-        source.map { expression(it) }.toColumn()
+    public inline fun <reified R> expr(infer: Infer = Infer.Nulls, noinline expression: (T) -> R): DataColumn<R> =
+        source.map { expression(it) }.toColumn(infer = infer)
 
     public inline fun <reified R> add(name: String, noinline expression: (T) -> R): Unit =
         add(source.map { expression(it) }.toColumn(name, Infer.Nulls))
@@ -165,6 +165,9 @@ public abstract class CreateDataFrameDsl<T> : TraversePropertiesDsl {
     public inline infix fun <reified R> KProperty<R>.from(noinline expression: (T) -> R): Unit =
         add(columnName, expression)
 
+    public inline infix fun <reified R> String.from(inferType: InferType<T, R>): Unit =
+        add(DataColumn.createWithTypeInference(this, source.map { inferType.expression(it) }))
+
     public inline infix fun <reified R> KProperty<R>.from(inferType: InferType<T, R>): Unit =
         add(DataColumn.createWithTypeInference(columnName, source.map { inferType.expression(it) }))
 
diff --git a/core/generated-sources/src/test/kotlin/org/jetbrains/kotlinx/dataframe/api/toDataFrame.kt b/core/generated-sources/src/test/kotlin/org/jetbrains/kotlinx/dataframe/api/toDataFrame.kt
index d29ae4ef8..0b42c3dc4 100644
--- a/core/generated-sources/src/test/kotlin/org/jetbrains/kotlinx/dataframe/api/toDataFrame.kt
+++ b/core/generated-sources/src/test/kotlin/org/jetbrains/kotlinx/dataframe/api/toDataFrame.kt
@@ -60,6 +60,21 @@ class CreateDataFrameTests {
         res["e"].type() shouldBe typeOf<Int>()
     }
 
+    @Test
+    fun `create column with infer type`() {
+        val data: List<Any> = listOf(1, 2, 3)
+        val res = data.toDataFrame {
+            "e" from inferType { it }
+            expr(infer = Infer.Type) { it } into "d"
+        }
+
+        res["e"].type() shouldBe typeOf<Int>()
+        res["e"].kind() shouldBe ColumnKind.Value
+
+        res["d"].type() shouldBe typeOf<Int>()
+        res["d"].kind() shouldBe ColumnKind.Value
+    }
+
     @Test
     fun `preserve fields order`() {
         class B(val x: Int, val c: String, d: Double) {
diff --git a/core/generated-sources/src/test/kotlin/org/jetbrains/kotlinx/dataframe/testSets/person/DataFrameTests.kt b/core/generated-sources/src/test/kotlin/org/jetbrains/kotlinx/dataframe/testSets/person/DataFrameTests.kt
index fe693bec9..59f3d6d02 100644
--- a/core/generated-sources/src/test/kotlin/org/jetbrains/kotlinx/dataframe/testSets/person/DataFrameTests.kt
+++ b/core/generated-sources/src/test/kotlin/org/jetbrains/kotlinx/dataframe/testSets/person/DataFrameTests.kt
@@ -15,6 +15,7 @@ import org.jetbrains.kotlinx.dataframe.annotations.ColumnName
 import org.jetbrains.kotlinx.dataframe.annotations.DataSchema
 import org.jetbrains.kotlinx.dataframe.api.ExcessiveColumns
 import org.jetbrains.kotlinx.dataframe.api.GroupBy
+import org.jetbrains.kotlinx.dataframe.api.Infer
 import org.jetbrains.kotlinx.dataframe.api.ParserOptions
 import org.jetbrains.kotlinx.dataframe.api.add
 import org.jetbrains.kotlinx.dataframe.api.addAll
@@ -182,6 +183,7 @@ import org.jetbrains.kotlinx.dataframe.size
 import org.jetbrains.kotlinx.dataframe.type
 import org.jetbrains.kotlinx.dataframe.typeClass
 import org.junit.Test
+import java.lang.reflect.Type
 import java.math.BigDecimal
 import java.time.LocalDate
 import kotlin.reflect.jvm.jvmErasure
@@ -919,6 +921,15 @@ class DataFrameTests : BaseTest() {
         }
     }
 
+    @Test
+    fun `add several columns with type inference`() {
+        val f: Any = 123
+        val df = typed.add {
+            expr(infer = Infer.Type) { f } into "f"
+        }
+        df["f"].type() shouldBe typeOf<Int>()
+    }
+
     @Test
     fun `remove one column`() {
         val expected = listOf("name", "city", "weight")
diff --git a/core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/add.kt b/core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/add.kt
index ab8ccac54..ff7be2a15 100644
--- a/core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/add.kt
+++ b/core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/add.kt
@@ -174,8 +174,8 @@ public class AddDsl<T>(@PublishedApi internal val df: DataFrame<T>) : ColumnsCon
         noinline expression: RowExpression<T, R>
     ): Boolean = add(df.mapToColumn(name, infer, expression))
 
-    public inline fun <reified R> expr(noinline expression: RowExpression<T, R>): DataColumn<R> {
-        return df.mapToColumn("", Infer.Nulls, expression)
+    public inline fun <reified R> expr(infer: Infer = Infer.Nulls, noinline expression: RowExpression<T, R>): DataColumn<R> {
+        return df.mapToColumn("", infer, expression)
     }
 
     public inline infix fun <reified R> String.from(noinline expression: RowExpression<T, R>): Boolean =
diff --git a/core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/toDataFrame.kt b/core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/toDataFrame.kt
index c755f0617..4cf7f2319 100644
--- a/core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/toDataFrame.kt
+++ b/core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/toDataFrame.kt
@@ -153,8 +153,8 @@ public abstract class CreateDataFrameDsl<T> : TraversePropertiesDsl {
         body: (TraversePropertiesDsl.() -> Unit)? = null,
     )
 
-    public inline fun <reified R> expr(noinline expression: (T) -> R): DataColumn<R> =
-        source.map { expression(it) }.toColumn()
+    public inline fun <reified R> expr(infer: Infer = Infer.Nulls, noinline expression: (T) -> R): DataColumn<R> =
+        source.map { expression(it) }.toColumn(infer = infer)
 
     public inline fun <reified R> add(name: String, noinline expression: (T) -> R): Unit =
         add(source.map { expression(it) }.toColumn(name, Infer.Nulls))
@@ -165,6 +165,9 @@ public abstract class CreateDataFrameDsl<T> : TraversePropertiesDsl {
     public inline infix fun <reified R> KProperty<R>.from(noinline expression: (T) -> R): Unit =
         add(columnName, expression)
 
+    public inline infix fun <reified R> String.from(inferType: InferType<T, R>): Unit =
+        add(DataColumn.createWithTypeInference(this, source.map { inferType.expression(it) }))
+
     public inline infix fun <reified R> KProperty<R>.from(inferType: InferType<T, R>): Unit =
         add(DataColumn.createWithTypeInference(columnName, source.map { inferType.expression(it) }))
 
diff --git a/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/api/toDataFrame.kt b/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/api/toDataFrame.kt
index d29ae4ef8..0b42c3dc4 100644
--- a/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/api/toDataFrame.kt
+++ b/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/api/toDataFrame.kt
@@ -60,6 +60,21 @@ class CreateDataFrameTests {
         res["e"].type() shouldBe typeOf<Int>()
     }
 
+    @Test
+    fun `create column with infer type`() {
+        val data: List<Any> = listOf(1, 2, 3)
+        val res = data.toDataFrame {
+            "e" from inferType { it }
+            expr(infer = Infer.Type) { it } into "d"
+        }
+
+        res["e"].type() shouldBe typeOf<Int>()
+        res["e"].kind() shouldBe ColumnKind.Value
+
+        res["d"].type() shouldBe typeOf<Int>()
+        res["d"].kind() shouldBe ColumnKind.Value
+    }
+
     @Test
     fun `preserve fields order`() {
         class B(val x: Int, val c: String, d: Double) {
diff --git a/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/testSets/person/DataFrameTests.kt b/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/testSets/person/DataFrameTests.kt
index fe693bec9..59f3d6d02 100644
--- a/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/testSets/person/DataFrameTests.kt
+++ b/core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/testSets/person/DataFrameTests.kt
@@ -15,6 +15,7 @@ import org.jetbrains.kotlinx.dataframe.annotations.ColumnName
 import org.jetbrains.kotlinx.dataframe.annotations.DataSchema
 import org.jetbrains.kotlinx.dataframe.api.ExcessiveColumns
 import org.jetbrains.kotlinx.dataframe.api.GroupBy
+import org.jetbrains.kotlinx.dataframe.api.Infer
 import org.jetbrains.kotlinx.dataframe.api.ParserOptions
 import org.jetbrains.kotlinx.dataframe.api.add
 import org.jetbrains.kotlinx.dataframe.api.addAll
@@ -182,6 +183,7 @@ import org.jetbrains.kotlinx.dataframe.size
 import org.jetbrains.kotlinx.dataframe.type
 import org.jetbrains.kotlinx.dataframe.typeClass
 import org.junit.Test
+import java.lang.reflect.Type
 import java.math.BigDecimal
 import java.time.LocalDate
 import kotlin.reflect.jvm.jvmErasure
@@ -919,6 +921,15 @@ class DataFrameTests : BaseTest() {
         }
     }
 
+    @Test
+    fun `add several columns with type inference`() {
+        val f: Any = 123
+        val df = typed.add {
+            expr(infer = Infer.Type) { f } into "f"
+        }
+        df["f"].type() shouldBe typeOf<Int>()
+    }
+
     @Test
     fun `remove one column`() {
         val expected = listOf("name", "city", "weight")