Gemini 2.0 Flash Thinking

Gemini 2.0 Flash Thinking is an experimental model that's trained to generate the "thinking process" the model goes through as part of its response. As a result, Gemini 2.0 Flash Thinking is capable of stronger reasoning capabilities in its responses than the base Gemini 2.0 Flash model.

Use Flash Thinking

Flash Thinking models are available as an experimental model in Vertex AI. To use the latest Flash Thinking model, select the gemini-2.0-flash-thinking-exp-01-21 model in the Model drop-down menu.

Gen AI SDK for Python

Learn how to install or update the Google Gen AI SDK for Python.
For more information, see the Gen AI SDK for Python API reference documentation or the python-genai GitHub repository.
Set environment variables to use the Gen AI SDK with Vertex AI: 

# Replace the `GOOGLE_CLOUD_PROJECT` and `GOOGLE_CLOUD_LOCATION` values
# with appropriate values for your project.
export GOOGLE_CLOUD_PROJECT=GOOGLE_CLOUD_PROJECT
export GOOGLE_CLOUD_LOCATION=us-central1
export GOOGLE_GENAI_USE_VERTEXAI=True
 

from google import genai
from google.genai.types import HttpOptions

client = genai.Client(http_options=HttpOptions(api_version="v1"))
response = client.models.generate_content(
    model='gemini-2.0-flash-thinking-exp-01-21',
    contents='solve x^2 + 4x + 4 = 0',
)
print(response.text)
# Example response:
#     To solve the equation x^2 + 4x + 4 = 0, we can use several methods.
#
#     **Method 1: Factoring**
#
#     We look for two numbers that multiply to 4 (the constant term) and add to 4 (the coefficient of the x term).
#     These two numbers are 2 and 2 because 2 * 2 = 4 and 2 + 2 = 4.
#     Therefore, we can factor the quadratic expression as:
#     (x + 2)(x + 2) = 0
#     This can also be written as:
#     (x + 2)^2 = 0
#
#     To solve for x, we set the factor (x + 2) equal to zero:
#     x + 2 = 0
#     Subtract 2 from both sides:
#     x = -2
#
#     **Method 2: Quadratic Formula**
#
#     The quadratic formula for an equation of the form ax^2 + bx + c = 0 is given by:
#     x = [-b ± sqrt(b^2 - 4ac)] / (2a)
#
#     ...
#
#
#     All three methods yield the same solution, x = -2.
#     This is a repeated root, which is expected since the discriminant (b^2 - 4ac) is 0.
#
#     To check our solution, we substitute x = -2 back into the original equation:
#     (-2)^2 + 4(-2) + 4 = 4 - 8 + 4 = 0
#     The equation holds true, so our solution is correct.

#     Final Answer: The final answer is $\boxed{-2}$

Limitations

Flash Thinking is an experimental model and has the following limitations:

  • 1M token input limit
  • Text, image, audio, and video input
  • 64k token output limit
  • Text only output
  • No built-in tool usage like Search or code execution

What's next?

Try Flash Thinking for yourself with our Colab notebook, or open the Vertex AI console and try prompting the model for yourself.