diff --git a/pyproject.toml b/pyproject.toml
index 13b41e5a9f13..098525f7ee6d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -200,7 +200,7 @@ dependencies = [
     "braintrust-core>=0.0.59,<1",
     "wrapt==1.17.3",
     "limits==5.8.0",
-    "deltalite==0.1.2",
+    "deltalite==0.1.3",
 ]
 
 [dependency-groups]
diff --git a/rust/Cargo.lock b/rust/Cargo.lock
index 4afce2c4d3cd..60c47c794d1f 100644
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -3788,7 +3788,7 @@ dependencies = [
 
 [[package]]
 name = "deltalite-python"
-version = "0.1.2"
+version = "0.1.3"
 dependencies = [
  "arrow",
  "arrow-array",
diff --git a/rust/deltalite/core/src/upsert.rs b/rust/deltalite/core/src/upsert.rs
index 7ddef11bb308..d8a6af4df639 100644
--- a/rust/deltalite/core/src/upsert.rs
+++ b/rust/deltalite/core/src/upsert.rs
@@ -240,6 +240,12 @@ pub struct UpsertStats {
     pub source_rows: usize,
     /// Source rows carrying a NULL PK component (always inserted, never matched).
     pub null_pk_rows: usize,
+    /// Wall-clock ms spent planning: listing each partition's files and pruning which to rewrite.
+    pub plan_ms: u64,
+    /// Wall-clock ms spent rewriting the touched partitions (reading + probing targets, writing files).
+    pub rewrite_ms: u64,
+    /// Wall-clock ms spent committing the new file set to the Delta log.
+    pub commit_ms: u64,
 }
 
 /// A file selected for rewrite, with the metadata needed to tombstone it.
@@ -604,6 +610,7 @@ async fn upsert_inner(
     // Index of the first PK column in the table schema, for stats-based pruning.
     let pk0_idx = table_schema.index_of(&opts.primary_keys[0]).ok();
 
+    let plan_started = Instant::now();
     let mut work = Vec::new();
     for (value, source) in groups {
         let files = list_partition_files(table, partition_col.as_deref(), &value).await?;
@@ -628,7 +635,10 @@ async fn upsert_inner(
         });
     }
 
+    let plan_ms = plan_started.elapsed().as_millis() as u64;
+
     // --- Rewrite (parallel across partitions) ----------------------------------------
+    let rewrite_started = Instant::now();
     let partitions_touched = work.len();
     let semaphore = Arc::new(Semaphore::new(opts.max_parallel_partitions.max(1)));
     // Per-call byte budget in KiB units (tokio's acquire_many takes u32); the
@@ -696,7 +706,10 @@ async fn upsert_inner(
         actions.extend(outcome.actions);
     }
 
+    let rewrite_ms = rewrite_started.elapsed().as_millis() as u64;
+
     // --- Commit ----------------------------------------------------------------------
+    let commit_started = Instant::now();
     let predicate = partition_col.as_ref().map(|c| {
         let vals: Vec<String> = actions
             .iter()
@@ -730,7 +743,11 @@ async fn upsert_inner(
         .with_actions(actions)
         .build(Some(snapshot), table.log_store(), operation)
         .await?;
+    let commit_ms = commit_started.elapsed().as_millis() as u64;
 
+    stats.plan_ms = plan_ms;
+    stats.rewrite_ms = rewrite_ms;
+    stats.commit_ms = commit_ms;
     stats.version = i64::try_from(finalized.version())
         .map_err(|_| Error::Generic("committed version overflows i64".into()))?;
     tracing::Span::current().record("version", stats.version);
@@ -743,6 +760,9 @@ async fn upsert_inner(
         rows_updated = stats.rows_updated,
         rows_inserted = stats.rows_inserted,
         rows_copied = stats.rows_copied,
+        plan_ms = stats.plan_ms,
+        rewrite_ms = stats.rewrite_ms,
+        commit_ms = stats.commit_ms,
         "upsert committed"
     );
     Ok(stats)
diff --git a/rust/deltalite/python/Cargo.toml b/rust/deltalite/python/Cargo.toml
index 5e71120f17c3..0e9297287070 100644
--- a/rust/deltalite/python/Cargo.toml
+++ b/rust/deltalite/python/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "deltalite-python"
 # Mirrors pyproject.toml in this directory (always identical); bump both together.
-version = "0.1.2"
+version = "0.1.3"
 edition = "2021"
 # CI compiles with this exact toolchain; cargo's MSRV-aware resolver uses it to
 # avoid picking dependency versions CI cannot build (aws-* crates move MSRV often).
diff --git a/rust/deltalite/python/README.md b/rust/deltalite/python/README.md
index 60179085c8f1..2d46b9b5875b 100644
--- a/rust/deltalite/python/README.md
+++ b/rust/deltalite/python/README.md
@@ -108,9 +108,12 @@ rejected (raising `DeltaLiteError`) rather than silently double-inserted.
 
 ### `UpsertStats`
 
-Returned by `upsert`. Fields: `version`, `partitions_touched`, `files_added`,
+Returned by `upsert`. Counts: `version`, `partitions_touched`, `files_added`,
 `files_removed`, `files_carried_over`, `files_probed`, `rows_updated`,
-`rows_inserted`, `rows_copied`, `source_rows`, `null_pk_rows`.
+`rows_inserted`, `rows_copied`, `source_rows`, `null_pk_rows`. Per-phase
+wall-clock timings (milliseconds): `plan_ms` (listing + pruning files),
+`rewrite_ms` (reading + rewriting the touched partitions), `commit_ms`
+(committing to the Delta log).
 
 ### Exceptions
 
diff --git a/rust/deltalite/python/pyproject.toml b/rust/deltalite/python/pyproject.toml
index df5fc6807ca0..b4953343d83e 100644
--- a/rust/deltalite/python/pyproject.toml
+++ b/rust/deltalite/python/pyproject.toml
@@ -10,7 +10,7 @@ build-backend = "maturin"
 [project]
 name = "deltalite"
 # Mirrors `rust/deltalite/python/Cargo.toml` (always identical); bump both together.
-version = "0.1.2"
+version = "0.1.3"
 description = "Streaming partition upsert for Delta tables, replacing delta-rs SQL MERGE"
 readme = "README.md"
 requires-python = ">=3.12"
diff --git a/rust/deltalite/python/src/lib.rs b/rust/deltalite/python/src/lib.rs
index a7282aefa38f..af149b6b0b2c 100644
--- a/rust/deltalite/python/src/lib.rs
+++ b/rust/deltalite/python/src/lib.rs
@@ -161,6 +161,12 @@ pub struct UpsertStats {
     pub source_rows: usize,
     #[pyo3(get)]
     pub null_pk_rows: usize,
+    #[pyo3(get)]
+    pub plan_ms: u64,
+    #[pyo3(get)]
+    pub rewrite_ms: u64,
+    #[pyo3(get)]
+    pub commit_ms: u64,
 }
 
 #[pymethods]
@@ -197,6 +203,9 @@ impl From<deltalite_core::upsert::UpsertStats> for UpsertStats {
             rows_copied: s.rows_copied,
             source_rows: s.source_rows,
             null_pk_rows: s.null_pk_rows,
+            plan_ms: s.plan_ms,
+            rewrite_ms: s.rewrite_ms,
+            commit_ms: s.commit_ms,
         }
     }
 }
diff --git a/uv.lock b/uv.lock
index 53d66129ee60..20f1548572a2 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1731,16 +1731,16 @@ pyarrow = [
 
 [[package]]
 name = "deltalite"
-version = "0.1.2"
+version = "0.1.3"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/3b/1e/49659fed92532267fbfc9298a16504ce8f13a26382e6355a0b43e337dade/deltalite-0.1.2.tar.gz", hash = "sha256:9555b17d7e57dc7e869317db4db772acfe067ad53aed2ac0699e751c401e3f02", size = 172868, upload-time = "2026-07-29T13:57:28.814Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/f9/18/0ebcff958c74ea79f1e8dfbb261f5474bb06033da21ced1bde4d3e1cc2e7/deltalite-0.1.3.tar.gz", hash = "sha256:5daafab4ed9d6f54cdcfea1cb7bfd900b906b6ab9402759c5a176b06fd943815", size = 173464, upload-time = "2026-07-31T13:34:15.853Z" }
 wheels = [
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-    { url = "https://files.pythonhosted.org/packages/a6/d5/a4ca6595ad7efcc1550a39cd4a3fff67a13076db5623582100e26a6dd5c0/deltalite-0.1.2-cp312-abi3-macosx_11_0_arm64.whl", hash = "sha256:e48f84c81c894ffb394aa92824989b64c017fc1bd4ffe4ba97b4d79d72e06829", size = 17838440, upload-time = "2026-07-29T13:57:10.827Z" },
-    { url = "https://files.pythonhosted.org/packages/10/7c/da3966cf9ab0db82285dc35932dde36da665ad22808051c51841bae999f4/deltalite-0.1.2-cp312-abi3-manylinux_2_28_aarch64.whl", hash = "sha256:1c0a45ce1bcf920170d35f707018d66da9476e1c12adcc8589742c9fdce74537", size = 63133529, upload-time = "2026-07-29T13:57:14.25Z" },
-    { url = "https://files.pythonhosted.org/packages/05/60/fa7c805b09f7f8d96da93572f640c3a7a256417d5a4b3a4425a7b46770a2/deltalite-0.1.2-cp312-abi3-manylinux_2_28_x86_64.whl", hash = "sha256:fc4af9d59fa944ebd906d9b395f8dcf75ff41a5c5f95540abc90914f417c9851", size = 65444603, upload-time = "2026-07-29T13:57:18.315Z" },
-    { url = "https://files.pythonhosted.org/packages/22/9c/52d86d4ffb7d30dc761888b130f217e6a09d37e0ca436d3d18adba9aaed6/deltalite-0.1.2-cp312-abi3-musllinux_1_2_aarch64.whl", hash = "sha256:1eb6b872730d03367b572f8fdb876dfb08875d0d1d3a06fc35bbd40db42a6aaf", size = 62721871, upload-time = "2026-07-29T13:57:22.439Z" },
-    { url = "https://files.pythonhosted.org/packages/01/b2/f7268ff3f7731d2421264ab2b342307893ce7e09659e98b36608ef9b5503/deltalite-0.1.2-cp312-abi3-musllinux_1_2_x86_64.whl", hash = "sha256:5b7ab6824c16a0a6fa23ce4dca15c3fdc7fbbbd98eb25dd9a290f1809842e524", size = 63793714, upload-time = "2026-07-29T13:57:26.13Z" },
+    { url = "https://files.pythonhosted.org/packages/69/b8/42fed73269c9b93aace404b1c33dfa5886cb9d03cd377982d3b70b4808b9/deltalite-0.1.3-cp312-abi3-macosx_10_12_x86_64.whl", hash = "sha256:f43539e33e90d9d2d4f6010a38a69ac1ebc943b7ddb34cb07682734b7d284594", size = 17956004, upload-time = "2026-07-31T13:33:58.697Z" },
+    { url = "https://files.pythonhosted.org/packages/68/3a/1f9fd47e3df3fc534abb43e97898c03c7e813f566ba484b5e3f3df43fc35/deltalite-0.1.3-cp312-abi3-macosx_11_0_arm64.whl", hash = "sha256:91a5b5f72e37701ac1d4541681be99a78dd14456fadcbd685026c8d91be1aa41", size = 17837576, upload-time = "2026-07-31T13:34:00.907Z" },
+    { url = "https://files.pythonhosted.org/packages/31/f8/e10658fdb57819b473c824618928b659ad65f541143e9c7a9653a93e9084/deltalite-0.1.3-cp312-abi3-manylinux_2_28_aarch64.whl", hash = "sha256:4e7cc11b98f4211027f9ab387fc01b6592430b4d699422bac6f5f1a8774e8210", size = 63147119, upload-time = "2026-07-31T13:34:03.7Z" },
+    { url = "https://files.pythonhosted.org/packages/d6/11/5aea109ae137d97e19f786e6e78114b326e8f334a71c534193815b69b006/deltalite-0.1.3-cp312-abi3-manylinux_2_28_x86_64.whl", hash = "sha256:ed2d864ab2b63ffd83589f4fc24b23b69ccfc0165e593f04121e7da89b2c4e37", size = 65438695, upload-time = "2026-07-31T13:34:07.314Z" },
+    { url = "https://files.pythonhosted.org/packages/29/6b/2a5ea282e1ded2dfdc97f2dccc9fce88ec419a15f366db229a5e106160df/deltalite-0.1.3-cp312-abi3-musllinux_1_2_aarch64.whl", hash = "sha256:206e41394a61182327120351e19df16932481a67a4edb14b3e77cbd6afd8e07e", size = 62731281, upload-time = "2026-07-31T13:34:10.303Z" },
+    { url = "https://files.pythonhosted.org/packages/2c/08/f0ddae42c7aef923a2b4b43b797b6a7ab781f05e05bfeee3916a3106a969/deltalite-0.1.3-cp312-abi3-musllinux_1_2_x86_64.whl", hash = "sha256:5f4a13be6ff584cb18b2162877fcb9f017f5d7a650039c271679c33d89914b95", size = 63797093, upload-time = "2026-07-31T13:34:13.349Z" },
 ]
 
 [[package]]
@@ -4661,7 +4661,7 @@ name = "nvidia-cudnn-cu12"
 version = "9.10.2.21"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "nvidia-cublas-cu12", marker = "platform_machine != 's390x' and sys_platform != 'emscripten'" },
+    { name = "nvidia-cublas-cu12" },
 ]
 wheels = [
     { url = "https://files.pythonhosted.org/packages/ba/51/e123d997aa098c61d029f76663dedbfb9bc8dcf8c60cbd6adbe42f76d049/nvidia_cudnn_cu12-9.10.2.21-py3-none-manylinux_2_27_x86_64.whl", hash = "sha256:949452be657fa16687d0930933f032835951ef0892b37d2d53824d1a84dc97a8", size = 706758467, upload-time = "2025-06-06T21:54:08.597Z" },
@@ -4672,7 +4672,7 @@ name = "nvidia-cufft-cu12"
 version = "11.3.3.83"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "nvidia-nvjitlink-cu12", marker = "platform_machine != 's390x' and sys_platform != 'emscripten'" },
+    { name = "nvidia-nvjitlink-cu12" },
 ]
 wheels = [
     { url = "https://files.pythonhosted.org/packages/1f/13/ee4e00f30e676b66ae65b4f08cb5bcbb8392c03f54f2d5413ea99a5d1c80/nvidia_cufft_cu12-11.3.3.83-py3-none-manylinux2014_x86_64.manylinux_2_17_x86_64.whl", hash = "sha256:4d2dd21ec0b88cf61b62e6b43564355e5222e4a3fb394cac0db101f2dd0d4f74", size = 193118695, upload-time = "2025-03-07T01:45:27.821Z" },
@@ -4699,9 +4699,9 @@ name = "nvidia-cusolver-cu12"
 version = "11.7.3.90"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "nvidia-cublas-cu12", marker = "platform_machine != 's390x' and sys_platform != 'emscripten'" },
-    { name = "nvidia-cusparse-cu12", marker = "platform_machine != 's390x' and sys_platform != 'emscripten'" },
-    { name = "nvidia-nvjitlink-cu12", marker = "platform_machine != 's390x' and sys_platform != 'emscripten'" },
+    { name = "nvidia-cublas-cu12" },
+    { name = "nvidia-cusparse-cu12" },
+    { name = "nvidia-nvjitlink-cu12" },
 ]
 wheels = [
     { url = "https://files.pythonhosted.org/packages/85/48/9a13d2975803e8cf2777d5ed57b87a0b6ca2cc795f9a4f59796a910bfb80/nvidia_cusolver_cu12-11.7.3.90-py3-none-manylinux_2_27_x86_64.whl", hash = "sha256:4376c11ad263152bd50ea295c05370360776f8c3427b30991df774f9fb26c450", size = 267506905, upload-time = "2025-03-07T01:47:16.273Z" },
@@ -4712,7 +4712,7 @@ name = "nvidia-cusparse-cu12"
 version = "12.5.8.93"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "nvidia-nvjitlink-cu12", marker = "platform_machine != 's390x' and sys_platform != 'emscripten'" },
+    { name = "nvidia-nvjitlink-cu12" },
 ]
 wheels = [
     { url = "https://files.pythonhosted.org/packages/c2/f5/e1854cb2f2bcd4280c44736c93550cc300ff4b8c95ebe370d0aa7d2b473d/nvidia_cusparse_cu12-12.5.8.93-py3-none-manylinux2014_x86_64.manylinux_2_17_x86_64.whl", hash = "sha256:1ec05d76bbbd8b61b06a80e1eaf8cf4959c3d4ce8e711b65ebd0443bb0ebb13b", size = 288216466, upload-time = "2025-03-07T01:48:13.779Z" },
@@ -5371,7 +5371,7 @@ name = "pexpect"
 version = "4.9.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "ptyprocess", marker = "sys_platform != 'emscripten'" },
+    { name = "ptyprocess" },
 ]
 sdist = { url = "https://files.pythonhosted.org/packages/42/92/cc564bf6381ff43ce1f4d06852fc19a2f11d180f23dc32d9588bee2f149d/pexpect-4.9.0.tar.gz", hash = "sha256:ee7d41123f3c9911050ea2c2dac107568dc43b2d3b0c7557a33212c398ead30f", size = 166450, upload-time = "2023-11-25T09:07:26.339Z" }
 wheels = [
@@ -5859,7 +5859,7 @@ requires-dist = [
     { name = "databricks-sql-connector", specifier = "~=4.3.0" },
     { name = "defusedxml", specifier = "~=0.7.1" },
     { name = "deltalake", extras = ["pyarrow"], specifier = "==1.6.1" },
-    { name = "deltalite", specifier = "==0.1.2" },
+    { name = "deltalite", specifier = "==0.1.3" },
     { name = "disposable-email-domains", specifier = "~=0.0.140" },
     { name = "dj-database-url", specifier = "~=3.0.0" },
     { name = "django", specifier = "~=5.2.0" },
@@ -7642,7 +7642,7 @@ name = "shadowcopy"
 version = "0.0.4"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "wmi", marker = "sys_platform != 'emscripten'" },
+    { name = "wmi" },
 ]
 sdist = { url = "https://files.pythonhosted.org/packages/12/44/c00420a3b7bcdf830529b933392b566c876a4944a24f31e126eb6fd28647/shadowcopy-0.0.4.tar.gz", hash = "sha256:ed89817dda065f893607a04c0b7d6b3b34c3507a4711f441111a4bcb1b1826c0", size = 4138, upload-time = "2023-07-08T00:01:35.266Z" }
 wheels = [
@@ -8076,7 +8076,7 @@ name = "tbb"
 version = "2022.3.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "tcmlib", marker = "platform_machine != 's390x' and sys_platform != 'emscripten'" },
+    { name = "tcmlib" },
 ]
 wheels = [
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@@ -8458,7 +8458,7 @@ name = "triton"
 version = "3.4.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "setuptools", marker = "platform_machine != 's390x' and sys_platform != 'emscripten'" },
+    { name = "setuptools" },
 ]
 wheels = [
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@@ -9165,7 +9165,7 @@ name = "wmi"
 version = "1.5.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
-    { name = "pywin32", marker = "sys_platform != 'emscripten'" },
+    { name = "pywin32" },
 ]
 sdist = { url = "https://files.pythonhosted.org/packages/d4/66/6364deb0a03415f96c66803d8c4379f808f2401da3bdb183348487b10510/WMI-1.5.1.tar.gz", hash = "sha256:b6a6be5711b1b6c8d55bda7a8befd75c48c12b770b9d227d31c1737dbf0d40a6", size = 26254, upload-time = "2020-04-28T08:22:58.096Z" }
 wheels = [