Pathways Language Model (PaLM)

The availability of the Pathways Language Model (PaLM) and embedding models listed below have been extended from October 9, 2024 to April 9, 2025 with limitations. This gives you more time to test and migrate to our latest Gemini 1.5 models.

Starting April 9, 2025, these models will no longer be accessible. You will have to migrate to a newer model to avoid any service disruption.

We've included resources below on how to migrate to newer models.

What you need to know

On October 9, 2024, we will make the following changes on the legacy models:

  • Block the use of these models from a newly created project.
  • Reject new quota increase requests.
  • Lower the default quota to 60 QPM.
    • If you have previously requested a quota increase, you will NOT be impacted.
  • Block new tuning jobs on these models.
    • You can still use already trained models.

The PaLM models listed below will be available until the new extended date of April 9, 2025:

Code Text Chat
code-bison@001
codechat-bison@001
code-gecko@001
code-bison@002
code-bison-32k@002
codechat-bison@002
codechat-bison-32k@002
code-gecko@002 		text-bison@001
text-bison@002
text-bison-32k@002
textembedding-gecko@002
textembedding-gecko@001
text-unicorn@001 		chat-bison@001
chat-bison@002
chat-bison-32k@002

What you need to do

We strongly encourage you to migrate to Gemini 1.5 Flash and Gemini 1.5 Pro for improved performance across most tasks, substantially increased context window over 1M tokens, and native multimodality. You will also see substantial cost savings along with these improvements.

Additionally, you can use Vertex AI Evaluation service to compare performance between models on your own evaluation data sets.

Please review our full guide on how to migrate from PaLM API to Gemini API in Vertex AI.

PaLM Gemini 
from vertexai.language_models import TextGenerationModel

model=TextGenerationModel.from_pretrained("text-bison@002")

response=model.predict(prompt="The opposite of hot is")
print(response.text)
          
from vertexai.generative_models import GenerativeModel

model=GenerativeModel("gemini-1.5-flash-001")

response=model.generate_content("The opposite of hot is")

for response in responses:
print(response.text)