---
title: GradientBase (v0.46)
description: API reference for qiskit.opflow.gradients.GradientBase in qiskit v0.46
source: https://eu-de.quantum.cloud.ibm.com/docs/en/api/qiskit/0.46/qiskit.opflow.gradients.GradientBase
---

# GradientBase

*class* `qiskit.opflow.gradients.GradientBase(grad_method='param_shift', **kwargs)`

[GitHub](https://github.com/qiskit/qiskit/tree/stable/0.46/qiskit/opflow/gradients/gradient_base.py)

Bases: [`DerivativeBase`](/docs/api/qiskit/0.46/qiskit.opflow.gradients.DerivativeBase "qiskit.opflow.gradients.derivative_base.DerivativeBase")

Deprecated: Base class for first-order operator gradient.

Convert an operator expression to the first-order gradient.

> **Deprecated since version 0.24.0**
>
> The class `qiskit.opflow.gradients.gradient_base.GradientBase` is deprecated as of qiskit-terra 0.24.0. It will be removed in the Qiskit 1.0 release. For code migration guidelines, visit [https://qisk.it/opflow\_migration](https://qisk.it/opflow_migration).

**Parameters**

- **grad\_method** ([*str*](https://docs.python.org/3/library/stdtypes.html#str)  *|*[*CircuitGradient*](/docs/api/qiskit/0.46/qiskit.opflow.gradients.CircuitGradient "qiskit.opflow.gradients.circuit_gradients.circuit_gradient.CircuitGradient")) – The method used to compute the state/probability gradient. Can be either `'param_shift'` or `'lin_comb'` or `'fin_diff'`. Ignored for gradients w\.r.t observable parameters.
- **kwargs** ([*dict*](https://docs.python.org/3/library/stdtypes.html#dict)) – Optional parameters for a CircuitGradient

**Raises**

[**ValueError**](https://docs.python.org/3/library/exceptions.html#ValueError) – If method != `fin_diff` and `epsilon` is not None.

## Attributes

### grad\_method

Returns `CircuitGradient`.

**Returns**

`CircuitGradient`.