diff --git a/bench/README.md b/bench/README.md
index 158e081..57142be 100644
--- a/bench/README.md
+++ b/bench/README.md
@@ -118,7 +118,16 @@ shape is fixed so the record stays greppable:
 
 | key | scenario | before | after | delta | reason | main run (URL) | main SHA | arm-none-eabi-gcc | qemu-system-arm |
 |---|---|---|---|---|---|---|---|---|---|
-| all | all | — | — | — | **unseeded**: the skeleton is empty by design; numbers are measured on CI, never typed in | — | — | — | — |
+| m33 | rfft_f32_2048 | — | 116,385,409 | — | **seeded** from the first push-to-main run after #21 merged (vendored Ooura C, `TAP_DSP_BENCH_ENGINE=reference_c`; m55 = CMSIS-DSP Helium, m55-ooura = the Ooura fallback) | [run 35281280300](https://github.com/tap/DspTap/actions/runs/35281280300) | df482d1 | 13.2.1 (15:13.2.rel1-2) | 8.2.2 (1:8.2.2+ds-0ubuntu1.18) |
+| m33 | rfft_f32_512 | — | 102,248,169 | — | **seeded** from the first push-to-main run after #21 merged (vendored Ooura C, `TAP_DSP_BENCH_ENGINE=reference_c`; m55 = CMSIS-DSP Helium, m55-ooura = the Ooura fallback) | [run 35281280300](https://github.com/tap/DspTap/actions/runs/35281280300) | df482d1 | 13.2.1 (15:13.2.rel1-2) | 8.2.2 (1:8.2.2+ds-0ubuntu1.18) |
+| m4-softfp | rfft_f32_2048 | — | 2,296,984,479 | — | **seeded** from the first push-to-main run after #21 merged (vendored Ooura C, `TAP_DSP_BENCH_ENGINE=reference_c`; m55 = CMSIS-DSP Helium, m55-ooura = the Ooura fallback) | [run 35281280300](https://github.com/tap/DspTap/actions/runs/35281280300) | df482d1 | 13.2.1 (15:13.2.rel1-2) | 8.2.2 (1:8.2.2+ds-0ubuntu1.18) |
+| m4-softfp | rfft_f32_512 | — | 1,868,441,244 | — | **seeded** from the first push-to-main run after #21 merged (vendored Ooura C, `TAP_DSP_BENCH_ENGINE=reference_c`; m55 = CMSIS-DSP Helium, m55-ooura = the Ooura fallback) | [run 35281280300](https://github.com/tap/DspTap/actions/runs/35281280300) | df482d1 | 13.2.1 (15:13.2.rel1-2) | 8.2.2 (1:8.2.2+ds-0ubuntu1.18) |
+| m4f | rfft_f32_2048 | — | 111,859,257 | — | **seeded** from the first push-to-main run after #21 merged (vendored Ooura C, `TAP_DSP_BENCH_ENGINE=reference_c`; m55 = CMSIS-DSP Helium, m55-ooura = the Ooura fallback) | [run 35281280300](https://github.com/tap/DspTap/actions/runs/35281280300) | df482d1 | 13.2.1 (15:13.2.rel1-2) | 8.2.2 (1:8.2.2+ds-0ubuntu1.18) |
+| m4f | rfft_f32_512 | — | 98,090,666 | — | **seeded** from the first push-to-main run after #21 merged (vendored Ooura C, `TAP_DSP_BENCH_ENGINE=reference_c`; m55 = CMSIS-DSP Helium, m55-ooura = the Ooura fallback) | [run 35281280300](https://github.com/tap/DspTap/actions/runs/35281280300) | df482d1 | 13.2.1 (15:13.2.rel1-2) | 8.2.2 (1:8.2.2+ds-0ubuntu1.18) |
+| m55 | rfft_f32_2048 | — | 54,858,120 | — | **seeded** from the first push-to-main run after #21 merged (vendored Ooura C, `TAP_DSP_BENCH_ENGINE=reference_c`; m55 = CMSIS-DSP Helium, m55-ooura = the Ooura fallback) | [run 35281280300](https://github.com/tap/DspTap/actions/runs/35281280300) | df482d1 | 13.2.1 (15:13.2.rel1-2) | 8.2.2 (1:8.2.2+ds-0ubuntu1.18) |
+| m55 | rfft_f32_512 | — | 52,382,331 | — | **seeded** from the first push-to-main run after #21 merged (vendored Ooura C, `TAP_DSP_BENCH_ENGINE=reference_c`; m55 = CMSIS-DSP Helium, m55-ooura = the Ooura fallback) | [run 35281280300](https://github.com/tap/DspTap/actions/runs/35281280300) | df482d1 | 13.2.1 (15:13.2.rel1-2) | 8.2.2 (1:8.2.2+ds-0ubuntu1.18) |
+| m55-ooura | rfft_f32_2048 | — | 107,806,480 | — | **seeded** from the first push-to-main run after #21 merged (vendored Ooura C, `TAP_DSP_BENCH_ENGINE=reference_c`; m55 = CMSIS-DSP Helium, m55-ooura = the Ooura fallback) | [run 35281280300](https://github.com/tap/DspTap/actions/runs/35281280300) | df482d1 | 13.2.1 (15:13.2.rel1-2) | 8.2.2 (1:8.2.2+ds-0ubuntu1.18) |
+| m55-ooura | rfft_f32_512 | — | 94,561,954 | — | **seeded** from the first push-to-main run after #21 merged (vendored Ooura C, `TAP_DSP_BENCH_ENGINE=reference_c`; m55 = CMSIS-DSP Helium, m55-ooura = the Ooura fallback) | [run 35281280300](https://github.com/tap/DspTap/actions/runs/35281280300) | df482d1 | 13.2.1 (15:13.2.rel1-2) | 8.2.2 (1:8.2.2+ds-0ubuntu1.18) |
 
 `before` is `—` for a seed. `main SHA` is the commit on `main` whose push
 run measured the numbers: a pull-request head SHA stops resolving after
diff --git a/bench/baselines.json b/bench/baselines.json
index df01ae1..2c0bf95 100644
--- a/bench/baselines.json
+++ b/bench/baselines.json
@@ -1,7 +1,22 @@
 {
-  "m33": {},
-  "m4-softfp": {},
-  "m4f": {},
-  "m55": {},
-  "m55-ooura": {}
+  "m33": {
+    "rfft_f32_2048": 116385409,
+    "rfft_f32_512": 102248169
+  },
+  "m4-softfp": {
+    "rfft_f32_2048": 2296984479,
+    "rfft_f32_512": 1868441244
+  },
+  "m4f": {
+    "rfft_f32_2048": 111859257,
+    "rfft_f32_512": 98090666
+  },
+  "m55": {
+    "rfft_f32_2048": 54858120,
+    "rfft_f32_512": 52382331
+  },
+  "m55-ooura": {
+    "rfft_f32_2048": 107806480,
+    "rfft_f32_512": 94561954
+  }
 }