Text Generation
Transformers
Safetensors
English
gpt_oss
esper
esper-3.1
esper-3
valiant
valiant-labs
gpt
gpt-oss
gpt-oss-20b
openai
20b
reasoning
code
code-instruct
python
javascript
dev-ops
jenkins
terraform
ansible
docker
kubernetes
helm
grafana
prometheus
shell
bash
azure
aws
gcp
cloud
scripting
powershell
problem-solving
architect
engineer
developer
creative
analytical
expert
rationality
conversational
chat
instruct
metadata
language:
- en
library_name: transformers
pipeline_tag: text-generation
tags:
- esper
- esper-3.1
- esper-3
- valiant
- valiant-labs
- gpt
- gpt-oss
- gpt-oss-20b
- openai
- 20b
- reasoning
- code
- code-instruct
- python
- javascript
- dev-ops
- jenkins
- terraform
- ansible
- docker
- jenkins
- kubernetes
- helm
- grafana
- prometheus
- shell
- bash
- azure
- aws
- gcp
- cloud
- scripting
- powershell
- problem-solving
- architect
- engineer
- developer
- creative
- analytical
- expert
- rationality
- conversational
- chat
- instruct
base_model: openai/gpt-oss-20b
datasets:
- sequelbox/Tachibana3-Part1-DeepSeek-V3.1-Terminus
- sequelbox/Tachibana3-Part2-DeepSeek-V3.2
- sequelbox/Titanium3-DeepSeek-V3.1-Terminus
- sequelbox/Mitakihara-DeepSeek-R1-0528
license: apache-2.0
Support our open-source dataset and model releases!
Esper 3.1: Qwen3-4B-Thinking-2507, gpt-oss-20b
Esper 3.1 is a coding, architecture, and DevOps reasoning specialist built on gpt-oss-20b.
- Your dedicated DevOps expert: Esper 3.1 maximizes DevOps and architecture helpfulness, powered by high-difficulty DevOps and architecture data generated with DeepSeek-V3.1-Terminus!
- Improved coding performance: challenging code-reasoning datasets stretch DeepSeek-V3.1-Terminus and DeepSeek-V3.2 to the limits, allowing Esper 3.1 to tackle harder coding tasks!
- AI to build AI: our high-difficulty AI expertise data boosts Esper 3.1's MLOps, AI architecture, AI research, and general reasoning skills.
- Small model sizes allow running on local desktop and mobile, plus super-fast server inference!
Prompting Guide
Esper 3.1 uses the gpt-oss-20b prompt format.
Esper 3.1 is a reasoning finetune; reasoning level high is generally recommended.
NOTE: This release of Esper 3.1 uses bf16 for all parameters. Consider quantized models if you're not looking to use bf16.
Example inference script provided by gpt-oss-20b to get started:
from transformers import pipeline
import torch
model_id = "ValiantLabs/gpt-oss-20b-Esper3.1"
pipe = pipeline(
"text-generation",
model=model_id,
torch_dtype="auto",
device_map="auto",
)
messages = [
{"role": "user", "content": "Design a serverless architecture for a real-time image processing application using AWS Lambda and Amazon S3."},
]
outputs = pipe(
messages,
max_new_tokens=15000,
)
print(outputs[0]["generated_text"][-1])
Esper 3.1 is created by Valiant Labs.
Check out our HuggingFace page to see all of our models!
We care about open source. For everyone to use.

