Upstage
Korean AI company behind the Solar family of enterprise LLMs
Traictory tracks 1 model from Upstage. Its listed model, Solar Pro 4, was released in August 2026.
The strongest Upstage model in our data is Solar Pro 4, with an average benchmark score of 69.9% across 9 published results, including 70.6% on SWE-Bench and 89.0% on GPQA.
Solar Pro 4 is priced at $0.30 per million input tokens and $1.20 per million output tokens. The largest context window is 524K tokens on Solar Pro 4.
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Upstage model catalog updated in 2026. See model comparisons and best models for coding.