Solar Pro 2 (Reasoning)
Analysis Summary
Solar Pro 2 Reasoning is Upstage's reasoning configuration, with stronger mathematics and coding-related results than its general intelligence result suggests. Its long-context and tool-oriented measurements are moderate, but instruction following is weaker and terminal performance is very limited. No coding index, pricing, or context-window size is supplied.
The model can support focused quantitative tasks, structured transformations, and supervised technical drafting. It is not a reliable default for autonomous agents, complex software changes, or nuanced marketing content where tone and instruction precision are essential. Without pricing information, its cost-effectiveness cannot be confirmed against other compact reasoning models.
Use it only for bounded workloads with strong review and clear evaluation criteria. More capable models should handle ambiguous briefs, client communications, and multi-step execution.
Assessed August 9, 2026
Editorial notes
Solar Pro 2 Reasoning shows useful mathematics and code-oriented results for a compact model, but its low general reasoning, weak agentic measures, and limited instruction following constrain client-facing use.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
DFO Verdict
Solar Pro 2 Reasoning shows useful mathematics and code-oriented results for a compact model, but its low general reasoning, weak agentic measures, and limited instruction following constrain client-facing use.
Benchmark scores
Magenta = intelligence · Ink = technical/agentic · Cyan = content & long-context · Grey = community benchmarks. Data: Artificial Analysis, Hugging Face.
8.8 Intelligence Index·61.3 Math Index
How Solar Pro 2 (Reasoning) compares
Solar Pro 2 (Reasoning) ranks #294 of 427 AI models we track for overall intelligence. Solar Pro 2 (Reasoning) is currently free to use via OpenRouter.
Dark bar = input · light bar = output, scaled to the priciest peer.
1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.
Strongest on content. The pulled-in value corner is the trade-off, and if the shape matters more than the price, this is your model.
Compare shapes side-by-side →Frequently asked questions about Solar Pro 2 (Reasoning)
How much does Solar Pro 2 (Reasoning) cost?
Solar Pro 2 (Reasoning) is currently available for free via OpenRouter.
Who created Solar Pro 2 (Reasoning)?
Solar Pro 2 (Reasoning) is developed by Upstage and was released on July 9, 2025.