Sold by: UpstageÂ
Deployed on AWS
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Syn Pro is a Japanese large language model jointly developed by Upstage and Karakuri Inc. to deliver cutting-edge AI performance tailored for Japan.
It combines native Japanese fluency, enterprise-grade security, and deployment flexibility, setting a new benchmark for compact, high-performing LLMs under 32 billion parameters.
Overview
Syn Pro represents the next generation of Japan-optimized AI - a large language model built from the ground up to understand Japanese language, business logic, and cultural nuance with unmatched precision.
Despite its compact size of fewer than 32 billion parameters, Syn Pro delivers benchmark-leading Japanese performance, outperforming much larger global models on linguistic, reasoning, and domain-specific tasks.
Its optimized architecture ensures efficient reasoning and cost-effective inference, making it ideal for businesses and public institutions seeking reliable, secure, and locally attuned AI solutions.
Highlights
- **Japan-Optimized LLM**: Co-developed with Karakuri Inc., Syn Pro is a large language model designed specifically for Japanese language, culture, and enterprise needs.
- **Compact Yet Powerful (Under 32B Parameters)**: Achieves top-tier Japanese performance rivaling much larger models, balancing efficiency and reasoning accuracy.
Details
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Delivery method
Latest version
Deployed on AWS
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Pricing
Free trial
Try this product free for 7 days according to the free trial terms set by the vendor.
Pricing is based on actual usage, with charges varying according to how much you consume. Subscriptions have no end date and may be canceled any time.
Additional AWS infrastructure costs may apply. Use the AWS Pricing Calculator to estimate your infrastructure costs.
Dimension | Description | Cost/host/hour |
|---|---|---|
ml.m5.12xlarge Inference (Batch) Recommended | Model inference on the ml.m5.12xlarge instance type, batch mode | $0.00 |
ml.p5.48xlarge Inference (Real-Time) Recommended | Model inference on the ml.p5.48xlarge instance type, real-time mode | $6.40 |
ml.p4d.24xlarge Inference (Real-Time) | Model inference on the ml.p4d.24xlarge instance type, real-time mode | $6.40 |
Vendor refund policy
About refund, please contact through https://get.support.upstage.ai/servicedesk/customer/portal/12Â
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Delivery details
Amazon SageMaker model
An Amazon SageMaker model package is a pre-trained machine learning model ready to use without additional training. Use the model package to create a model on Amazon SageMaker for real-time inference or batch processing. Amazon SageMaker is a fully managed platform for building, training, and deploying machine learning models at scale.
Deploy the model on Amazon SageMaker AI using the following options:
Version release notes
Already earning top-tier recognition on the global stage, Syn Pro is Japan’s top-performing locally trained LLM - ranked #1 under 32B parameters and placed in the global top 20 on the Nejumi Leaderboard by Weights & Biases Japan. In Japanese-language tasks, Syn Pro outperforms even larger models like GPT OSS-120B, delivering the precision and cultural nuance required by Japan’s most demanding industries.
Purpose-built for Japan’s enterprises and public institutions, Syn Pro reflects deep linguistic, regulatory, and cultural alignment - and is deployable entirely on-premises, in private cloud, or through integrated hardware.
Additional details
Inputs
- Summary
We support a request payload that is compatible with OpenAI's chat completion endpoint. You can check the detail input paramter descrption at https://console.upstage.ai/api/chat .
- Input MIME type
- application/json
{ "model": "syn-pro", "messages": [ { "role": "system", "content": "You are a helpful assistant." }, { "role": "user", "content": "Tell me a single joke." } ], "temperature": 0.7 }
BATCH INFERENCE IS NOT SUPPORTED NOW
Support
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AWS infrastructure support
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