Using Open-Assistant SFT-1 12B on Replicate API

Implementation guide · Open-Assistant · OpenAssistant

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Replicate API exposes Open-Assistant SFT-1 12B through model ID openassistant-sft1-pythia-12b. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-05-19. Next refresh: weekly.

Quick Start

  1. 1
    Create an account at Replicate API and generate an API key.
  2. 2
    Use the Replicate API SDK or REST API to call openassistant-sft1-pythia-12b — see the documentation for request format.
API PortalDocumentationPricing

Code Examples

Install
pip install replicate
API key
REPLICATE_API_TOKEN
Model ID
openassistant-sft1-pythia-12b

Replicate uses "owner/model-name" format (e.g. "meta/meta-llama-3-8b-instruct") for the latest version, or "owner/model-name:version-sha" to pin to a specific version. The REST endpoint splits owner and model-name into the path: /v1/models/{owner}/{model-name}/predictions.

import replicate

# reads REPLICATE_API_TOKEN from env
# openassistant-sft1-pythia-12b format: "owner/model-name" (latest version) or "owner/model-name:version-hash"
output = replicate.run(
    "openassistant-sft1-pythia-12b",
    input={"prompt": "Hello"}
)
# Output is a list or generator depending on the model
print("".join(output))

Pricing on Replicate API

Capabilities

No model capability flags are currently sourced.

About Open-Assistant SFT-1 12B

Open-Assistant SFT-1 12B is OpenAssistant's Open-Assistant model. It was released 2023-04-15.

Full model details →

Model Specs

Released2023-04-15
Parameters12B
Context2k
ArchitectureDecoder Only

Provider

Replicate API

Replicate

San Francisco, California, United States