diff --git a/candle-onnx/src/eval.rs b/candle-onnx/src/eval.rs
index df25829013..31eb62cdf1 100644
--- a/candle-onnx/src/eval.rs
+++ b/candle-onnx/src/eval.rs
@@ -1027,6 +1027,59 @@ pub fn simple_eval(
                 };
                 values.insert(node.output[0].clone(), output);
             }
+            "ArgMin" => {
+                let input = get(&node.input[0])?;
+                let axis_i64: i64 = get_attr_opt(node, "axis")?.copied().unwrap_or(0);
+                let rank_i64: i64 = input.rank().try_into().unwrap();
+                if axis_i64 < -rank_i64 || axis_i64 >= rank_i64 {
+                    bail!("axis ({}) out of accepted range [-rank, rank-1] which was [{}, {}]", axis_i64, -rank_i64, rank_i64-1)
+                }
+                let axis = input.normalize_axis(axis_i64)?;
+                let keepdims: i64 = get_attr_opt(node, "keepdims")?.copied().unwrap_or(1);
+                let select_last_index: i64 = get_attr_opt(node, "select_last_index")?.copied().unwrap_or(0);
+                if select_last_index == 1 {
+                    bail!("select_last_index for ArgMin is currently not supported")
+                }
+                let output = if keepdims == 1 {
+                    input.argmin_keepdim(axis)?
+                } else {
+                    input.argmin(axis)?
+                }.to_dtype(DType::I64)?;
+                values.insert(node.output[0].clone(), output);
+            }
+            "ArgMax" => {
+                let input = get(&node.input[0])?;
+                let axis_i64: i64 = get_attr_opt(node, "axis")?.copied().unwrap_or(0);
+                let rank_i64: i64 = input.rank().try_into().unwrap();
+                if axis_i64 < -rank_i64 || axis_i64 >= rank_i64 {
+                    bail!("axis ({}) out of accepted range [-rank, rank-1] which was [{}, {}]", axis_i64, -rank_i64, rank_i64-1)
+                }
+                let axis = input.normalize_axis(axis_i64)?;
+                let keepdims: i64 = get_attr_opt(node, "keepdims")?.copied().unwrap_or(1);
+                let select_last_index: i64 = get_attr_opt(node, "select_last_index")?.copied().unwrap_or(0);
+                if select_last_index == 1 {
+                    bail!("select_last_index for ArgMin is currently not supported")
+                }
+                let output = if keepdims == 1 {
+                    input.argmax_keepdim(axis)?
+                } else {
+                    input.argmax(axis)?
+                }.to_dtype(DType::I64)?;
+                values.insert(node.output[0].clone(), output);
+            }
+            "LeakyRelu" => {
+                let input = get(&node.input[0])?;
+                let dt = input.dtype();
+                match dt {
+                    DType::U8 | DType::U32 | DType::I64 => {
+                        bail!("unsupported dtype {}, only float types are allowed for LeakyRelu", dt.as_str())
+                    }
+                    DType::BF16 | DType::F16 | DType::F32 | DType::F64 => {}
+                }
+                let alpha = get_attr_opt::<f32>(node, "alpha")?.copied().unwrap_or(0.01);
+                let output = candle_nn::ops::leaky_relu(input, alpha.into())?;
+                values.insert(node.output[0].clone(), output);
+            }
             op_type => bail!("unsupported op_type {op_type} for op {node:?}"),
         }
     }
diff --git a/candle-onnx/tests/ops.rs b/candle-onnx/tests/ops.rs
index f58aeccfac..ffafd7a7b2 100644
--- a/candle-onnx/tests/ops.rs
+++ b/candle-onnx/tests/ops.rs
@@ -2708,3 +2708,473 @@ fn test_ceil() -> Result<()> {
 
     Ok(())
 }
+
+// "ArgMin"
+#[test]
+fn test_argmin() -> Result<()> {
+    // tests from https://github.com/onnx/onnx/blob/main/docs/Operators.md#examples-7
+    // default_axes_keepdims
+    test(
+        &[
+            [2u32, 1u32],
+            [3u32, 10u32]
+        ],
+        None,
+        Some(1),
+        None,
+        &[
+            [0i64, 0i64],
+        ],
+    )?;
+    // keepdims
+    test(
+        &[
+            [2u32, 1u32],
+            [3u32, 10u32]
+        ],
+        Some(1),
+        Some(1),
+        None,
+        &[
+            [1i64],
+            [0i64]
+        ],
+    )?;
+    // // negative_axis_keepdims
+    test(
+        &[
+            [2u32, 1u32],
+            [3u32, 10u32]
+        ],
+        Some(-1),
+        Some(1),
+        None,
+        &[
+            [1i64],
+            [0i64]
+        ],
+    )?;
+    // no_keepdims
+    test(
+        &[
+            [2u32, 1u32],
+            [3u32, 10u32]
+        ],
+        None,
+        Some(0),
+        None,
+        &[0i64, 0i64],
+    )?;
+    // tests from https://pytorch.org/docs/stable/generated/torch.argmin.html#torch.argmin
+    test(
+        &[
+            [0.1139, 0.2254, -0.1381, 0.3687],
+            [1.0100, -1.1975, -0.0102, -0.4732],
+            [-0.9240, 0.1207, -0.7506, -1.0213],
+            [1.7809, -1.2960, 0.9384, 0.1438]
+        ],
+        Some(1),
+        Some(0),
+        None,
+        &[2i64, 1i64, 3i64, 1i64],
+    )?;
+    test(
+        &[
+            [0.1139, 0.2254, -0.1381, 0.3687],
+            [1.0100, -1.1975, -0.0102, -0.4732],
+            [-0.9240, 0.1207, -0.7506, -1.0213],
+            [1.7809, -1.2960, 0.9384, 0.1438]
+        ],
+        Some(1),
+        None,
+        None,
+        &[[2i64], [1i64], [3i64], [1i64]],
+    )?;
+    fn test(data: impl NdArray, axis: Option<i64>, keepdims: Option<i64>, select_last_index: Option<i64>, expected: impl NdArray) -> Result<()> {
+        let att_axis = AttributeProto {
+            name: "axis".to_string(),
+            ref_attr_name: "axis".to_string(),
+            i: axis.unwrap_or(0),
+            doc_string: "axis".to_string(),
+            r#type: 2, // INT
+            f: 0.0,
+            s: vec![],
+            t: None,
+            g: None,
+            sparse_tensor: None,
+            tp: None,
+            floats: vec![],
+            ints: vec![],
+            strings: vec![],
+            tensors: vec![],
+            graphs: vec![],
+            sparse_tensors: vec![],
+            type_protos: vec![],
+        };
+        let att_keepdims = AttributeProto {
+            name: "keepdims".to_string(),
+            ref_attr_name: "keepdims".to_string(),
+            i: keepdims.unwrap_or(1),
+            doc_string: "keepdims".to_string(),
+            r#type: 2, // INT
+            f: 0.0,
+            s: vec![],
+            t: None,
+            g: None,
+            sparse_tensor: None,
+            tp: None,
+            floats: vec![],
+            ints: vec![],
+            strings: vec![],
+            tensors: vec![],
+            graphs: vec![],
+            sparse_tensors: vec![],
+            type_protos: vec![],
+        };
+        let att_select_last_index = AttributeProto {
+            name: "select_last_index".to_string(),
+            ref_attr_name: "select_last_index".to_string(),
+            i: select_last_index.unwrap_or(0),
+            doc_string: "select_last_index".to_string(),
+            r#type: 2, // INT
+            f: 0.0,
+            s: vec![],
+            t: None,
+            g: None,
+            sparse_tensor: None,
+            tp: None,
+            floats: vec![],
+            ints: vec![],
+            strings: vec![],
+            tensors: vec![],
+            graphs: vec![],
+            sparse_tensors: vec![],
+            type_protos: vec![],
+        };
+        let attrs = {
+            let mut mut_attrs = vec![];
+            if axis.is_some() {
+                mut_attrs.push(att_axis);
+            }
+            if keepdims.is_some() {
+                mut_attrs.push(att_keepdims);
+            }
+            if select_last_index.is_some() {
+                mut_attrs.push(att_select_last_index);
+            }
+            mut_attrs
+        };
+        let manual_graph = create_model_proto_with_graph(Some(GraphProto {
+            node: vec![NodeProto {
+                op_type: "ArgMin".to_string(),
+                domain: "".to_string(),
+                attribute: attrs,
+                input: vec![INPUT_X.to_string()],
+                output: vec![OUTPUT_Z.to_string()],
+                name: "".to_string(),
+                doc_string: "".to_string(),
+            }],
+            name: "".to_string(),
+            initializer: vec![],
+            input: vec![],
+            output: vec![ValueInfoProto {
+                name: OUTPUT_Z.to_string(),
+                doc_string: "".to_string(),
+                r#type: None,
+            }],
+            value_info: vec![],
+            doc_string: "".to_string(),
+            sparse_initializer: vec![],
+            quantization_annotation: vec![],
+        }));
+        let mut inputs: HashMap<String, Tensor> = HashMap::new();
+        inputs.insert(INPUT_X.to_string(), Tensor::new(data, &Device::Cpu)?);
+        let eval = candle_onnx::simple_eval(&manual_graph, inputs)?;
+        let z = eval.get(OUTPUT_Z).expect("Output 'z' not found");
+
+        let expected = Tensor::new(expected, &Device::Cpu)?;
+        match expected.dims().len() {
+            1 => assert_eq!(z.to_vec1::<i64>()?, expected.to_vec1::<i64>()?),
+            2 => assert_eq!(z.to_vec2::<i64>()?, expected.to_vec2::<i64>()?),
+            _ => unreachable!(),
+        };
+
+        Ok(())
+    }
+
+    Ok(())
+}
+
+// "ArgMax"
+#[test]
+fn test_argmax() -> Result<()> {
+    // tests from https://github.com/onnx/onnx/blob/main/docs/Operators.md#examples-6
+    // default_axes_keepdims
+    test(
+        &[
+            [2u32, 1u32],
+            [3u32, 10u32]
+        ],
+        None,
+        Some(1),
+        None,
+        &[
+            [1i64, 1i64],
+        ],
+    )?;
+    // keepdims
+    test(
+        &[
+            [2u32, 1u32],
+            [3u32, 10u32]
+        ],
+        Some(1),
+        Some(1),
+        None,
+        &[
+            [0i64],
+            [1i64]
+        ],
+    )?;
+    // // negative_axis_keepdims
+    test(
+        &[
+            [2u32, 1u32],
+            [3u32, 10u32]
+        ],
+        Some(-1),
+        Some(1),
+        None,
+        &[
+            [0i64],
+            [1i64]
+        ],
+    )?;
+    // no_keepdims
+    test(
+        &[
+            [2u32, 1u32],
+            [3u32, 10u32]
+        ],
+        None,
+        Some(0),
+        None,
+        &[1i64, 1i64],
+    )?;
+    // tests from https://pytorch.org/docs/stable/generated/torch.argmax.html
+    test(
+        &[
+            [1.3398, 0.2663, -0.2686, 0.2450],
+            [-0.7401, -0.8805, -0.3402, -1.1936],
+            [0.4907, -1.3948, -1.0691, -0.3132],
+            [-1.6092, 0.5419, -0.2993, 0.3195]
+        ],
+        Some(1),
+        Some(0),
+        None,
+        &[0i64, 2i64, 0i64, 1i64],
+    )?;
+    test(
+        &[
+            [1.3398, 0.2663, -0.2686, 0.2450],
+            [-0.7401, -0.8805, -0.3402, -1.1936],
+            [0.4907, -1.3948, -1.0691, -0.3132],
+            [-1.6092, 0.5419, -0.2993, 0.3195]
+        ],
+        Some(1),
+        None,
+        None,
+        &[[0i64], [2i64], [0i64], [1i64]],
+    )?;
+    fn test(data: impl NdArray, axis: Option<i64>, keepdims: Option<i64>, select_last_index: Option<i64>, expected: impl NdArray) -> Result<()> {
+        let att_axis = AttributeProto {
+            name: "axis".to_string(),
+            ref_attr_name: "axis".to_string(),
+            i: axis.unwrap_or(0),
+            doc_string: "axis".to_string(),
+            r#type: 2, // INT
+            f: 0.0,
+            s: vec![],
+            t: None,
+            g: None,
+            sparse_tensor: None,
+            tp: None,
+            floats: vec![],
+            ints: vec![],
+            strings: vec![],
+            tensors: vec![],
+            graphs: vec![],
+            sparse_tensors: vec![],
+            type_protos: vec![],
+        };
+        let att_keepdims = AttributeProto {
+            name: "keepdims".to_string(),
+            ref_attr_name: "keepdims".to_string(),
+            i: keepdims.unwrap_or(1),
+            doc_string: "keepdims".to_string(),
+            r#type: 2, // INT
+            f: 0.0,
+            s: vec![],
+            t: None,
+            g: None,
+            sparse_tensor: None,
+            tp: None,
+            floats: vec![],
+            ints: vec![],
+            strings: vec![],
+            tensors: vec![],
+            graphs: vec![],
+            sparse_tensors: vec![],
+            type_protos: vec![],
+        };
+        let att_select_last_index = AttributeProto {
+            name: "select_last_index".to_string(),
+            ref_attr_name: "select_last_index".to_string(),
+            i: select_last_index.unwrap_or(0),
+            doc_string: "select_last_index".to_string(),
+            r#type: 2, // INT
+            f: 0.0,
+            s: vec![],
+            t: None,
+            g: None,
+            sparse_tensor: None,
+            tp: None,
+            floats: vec![],
+            ints: vec![],
+            strings: vec![],
+            tensors: vec![],
+            graphs: vec![],
+            sparse_tensors: vec![],
+            type_protos: vec![],
+        };
+        let attrs = {
+            let mut mut_attrs = vec![];
+            if axis.is_some() {
+                mut_attrs.push(att_axis);
+            }
+            if keepdims.is_some() {
+                mut_attrs.push(att_keepdims);
+            }
+            if select_last_index.is_some() {
+                mut_attrs.push(att_select_last_index);
+            }
+            mut_attrs
+        };
+        let manual_graph = create_model_proto_with_graph(Some(GraphProto {
+            node: vec![NodeProto {
+                op_type: "ArgMax".to_string(),
+                domain: "".to_string(),
+                attribute: attrs,
+                input: vec![INPUT_X.to_string()],
+                output: vec![OUTPUT_Z.to_string()],
+                name: "".to_string(),
+                doc_string: "".to_string(),
+            }],
+            name: "".to_string(),
+            initializer: vec![],
+            input: vec![],
+            output: vec![ValueInfoProto {
+                name: OUTPUT_Z.to_string(),
+                doc_string: "".to_string(),
+                r#type: None,
+            }],
+            value_info: vec![],
+            doc_string: "".to_string(),
+            sparse_initializer: vec![],
+            quantization_annotation: vec![],
+        }));
+        let mut inputs: HashMap<String, Tensor> = HashMap::new();
+        inputs.insert(INPUT_X.to_string(), Tensor::new(data, &Device::Cpu)?);
+        let eval = candle_onnx::simple_eval(&manual_graph, inputs)?;
+        let z = eval.get(OUTPUT_Z).expect("Output 'z' not found");
+
+        let expected = Tensor::new(expected, &Device::Cpu)?;
+        match expected.dims().len() {
+            1 => assert_eq!(z.to_vec1::<i64>()?, expected.to_vec1::<i64>()?),
+            2 => assert_eq!(z.to_vec2::<i64>()?, expected.to_vec2::<i64>()?),
+            _ => unreachable!(),
+        };
+
+        Ok(())
+    }
+
+    Ok(())
+}
+
+// "LeakyRelu"
+#[test]
+fn test_leakyrelu() -> Result<()> {
+    // tests from https://github.com/onnx/onnx/blob/main/docs/Operators.md#examples-80
+    // leakyrelu
+    test(
+        &[-1.0, 0.0, 1.0],
+        Some(0.1),
+        &[-0.1, 0.0, 1.0]
+    )?;
+    fn test(data: impl NdArray, alpha: Option<f32>, expected: impl NdArray) -> Result<()> {
+        let att_alpha = AttributeProto {
+            name: "alpha".to_string(),
+            ref_attr_name: "alpha".to_string(),
+            i: 0,
+            doc_string: "alpha".to_string(),
+            r#type: 1, // FLOAT
+            f: alpha.unwrap_or(0.01),
+            s: vec![],
+            t: None,
+            g: None,
+            sparse_tensor: None,
+            tp: None,
+            floats: vec![],
+            ints: vec![],
+            strings: vec![],
+            tensors: vec![],
+            graphs: vec![],
+            sparse_tensors: vec![],
+            type_protos: vec![],
+        };
+        let attrs = {
+            let mut mut_attrs = vec![];
+            if alpha.is_some() {
+                mut_attrs.push(att_alpha);
+            }
+            mut_attrs
+        };
+        let manual_graph = create_model_proto_with_graph(Some(GraphProto {
+            node: vec![NodeProto {
+                op_type: "LeakyRelu".to_string(),
+                domain: "".to_string(),
+                attribute: attrs,
+                input: vec![INPUT_X.to_string()],
+                output: vec![OUTPUT_Z.to_string()],
+                name: "".to_string(),
+                doc_string: "".to_string(),
+            }],
+            name: "".to_string(),
+            initializer: vec![],
+            input: vec![],
+            output: vec![ValueInfoProto {
+                name: OUTPUT_Z.to_string(),
+                doc_string: "".to_string(),
+                r#type: None,
+            }],
+            value_info: vec![],
+            doc_string: "".to_string(),
+            sparse_initializer: vec![],
+            quantization_annotation: vec![],
+        }));
+        let mut inputs: HashMap<String, Tensor> = HashMap::new();
+        inputs.insert(INPUT_X.to_string(), Tensor::new(data, &Device::Cpu)?);
+        let eval = candle_onnx::simple_eval(&manual_graph, inputs)?;
+        let z = eval.get(OUTPUT_Z).expect("Output 'z' not found");
+
+        let expected = Tensor::new(expected, &Device::Cpu)?;
+        for both in z.to_vec1::<f64>()?.iter().zip(expected.to_vec1::<f64>()?.iter()) {
+            let (act, exp) = both;
+            assert!(f64::abs(act - exp) < f32::EPSILON.into());
+        }
+
+        Ok(())
+    }
+
+    Ok(())
+}