Name: Solar Pro 3
Author: Upstage

Solar Pro 3

Upstage · 2026-01-26

Solar Pro 3 is Upstage's successor to Solar Pro 2, released as an API model optimized for stronger reasoning and instruction following while preserving the same API interface, throughput, and serving behavior. It is designed as a drop-in production upgrade for Solar Pro 2 workloads, with improved response quality for multi-step reasoning, subtle instruction following, and complex preference judgments.

Benchmark scores

Benchmark	Score
AA-Briefcase Elo	138
AA-LCR	27.0
AA-Omniscience Index	-53.8
Artificial Analysis Agentic Index	2.7
Artificial Analysis Coding Index	16.2
Artificial Analysis Intelligence Index	14.1
Artificial Analysis Omniscience Accuracy	18.1
Artificial Analysis Omniscience Hallucination Rate	87.8
BuseyBench SVG	1.2
Capability	134.2
CritPt	0.0
GDPval-AA v2	498
GDPval-AA v2 (normalized)	0.0
GPQA Diamond	72.4
Humanity's Last Exam (Text-Only)	10.1
IFBench (Artificial Analysis)	71.2
Longform Creative Writing	27.0
SciCode	24.7
SciCode (Artificial Analysis)	24.7
Terminal-Bench 2.1	12.0
Terminal-Bench Hard	7.6
τ²-bench (Telecom)	86.3
𝜏³-Banking	8.0