Pricing and context window via OpenRouter, 2026-11-09.
Upstage released Solar Pro 4, a text-to-text model with a 524K token context window aimed at agentic workflows, document processing, and coding, priced at $0.03/M input and $0.12/M output tokens.
| Benchmark | Score | Rank | Source |
|---|---|---|---|
| Arena Elo | 1388 Elo | 109 of 151 | LMArena, Nov 2026 ↗ |
| GPQA | 89.0% | 56 of 159 | llm-stats, Aug 2026 ↗ |
| SWE-bench Verified | 70.6% | 58 of 78 | llm-stats, Aug 2026 ↗ |
| Hallucination Rate (lower is better) | 24.4% | 7 of 109 | Artificial Analysis, Aug 2026 ↗ |
| MMLU-Pro | 86.3% | 17 of 73 | llm-stats, Aug 2026 ↗ |
| LiveCodeBench | 87.8% | 7 of 48 | llm-stats, Aug 2026 ↗ |
| AIME 2026 | 95.3% | 7 of 26 | llm-stats, Aug 2026 ↗ |
Rank is against every model in our database with a sourced score on that benchmark, each counted once with its best score.
Upstage has released Solar Pro 4, a large language model with a 524K token context window aimed at agentic workflows, document processing, and coding. The model is priced at $0.03 per million input tokens and $0.12 per million output tokens, and is available now via OpenRouter.