Upstage: Solar Pro 3

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Author's Description

Solar Pro 3 is Upstage's powerful Mixture-of-Experts (MoE) language model. With 102B total parameters and 12B active parameters per forward pass, it delivers exceptional performance while maintaining computational efficiency. Optimized...

Key Specifications
Cost
$$$
Context
128K
Parameters
102B (Rumoured)
Released
Jan 26, 2026
Speed
Ability
Reliability
Supported Parameters

This model supports the following parameters:

Tools Tool Choice Temperature Include Reasoning Reasoning Max Tokens Structured Outputs Response Format
Features

This model supports the following features:

Structured Outputs Reasoning Response Format Tools
Performance Summary

Upstage's Solar Pro 3, an MoE model with 102B total and 12B active parameters, demonstrates competitive overall performance, particularly excelling in reliability. It consistently provides usable responses, achieving a perfect 100% success rate across all benchmarks. In terms of speed, Solar Pro 3 performs at a competitive level, ranking in the 53rd percentile, while its pricing is generally cost-effective, placing it in the 68th percentile. Analyzing specific benchmarks, Solar Pro 3 shows strong performance in Ethics (99.0% accuracy, 55th percentile) and General Knowledge (95.5% accuracy, 38th percentile), indicating a robust understanding of ethical principles and a broad factual base. Its Mathematics (85.0% accuracy, 45th percentile) and Coding (82.0% accuracy, 44th percentile) capabilities are also solid. However, the model exhibits notable weaknesses in Hallucinations (52.0% accuracy, 10th percentile) and Instruction Following (50.0% accuracy, 41st percentile), suggesting areas for improvement in acknowledging uncertainty and precisely executing complex directives. Email Classification also presents a weakness with 92.0% accuracy, placing it in the 17th percentile.

Model Pricing

Current Pricing

Feature Price (per 1M tokens)
Prompt $0.15
Completion $0.6
Input Cache Read $0.015

Price History

Available Endpoints
Provider Endpoint Name Context Length Pricing (Input) Pricing (Output)
Upstage
Upstage | upstage/solar-pro-3 128K $0.15 / 1M tokens $0.6 / 1M tokens
Benchmark Results
Benchmark Category Reasoning Strategy Free Executions Accuracy Cost Duration