{"slug": "upstage-releases-solar-pro-4-scoring-42-on-intelligence-index", "title": "Upstage releases Solar Pro 4, scoring 42 on Intelligence Index", "summary": "Upstage, a South Korean AI startup founded in 2020, released Solar Pro 4, a reasoning model that scored 42 on the Artificial Analysis Intelligence Index, triple the 14 scored by its predecessor Solar Pro 3. The model, targeting enterprise workflows, achieves 57% on Terminal-Bench v2.1, 71% on AA-LCR, 23% on τ³-Banking, and a GDPval-AA v2 Elo of 1,277 versus a human baseline of 1,000, with a 524K-token context window and a reasoning-effort dial. Upstage is offering a 90% API pricing discount until September 10, 2026, with input at $0.30 per million tokens and output at $1.20 per million, and the model is available via Upstage's API, OpenRouter, and Nous Research's Hermes Agent platform.", "body_md": "Via upstage.ai\n\n# Upstage releases Solar Pro 4, scoring 42 on Intelligence Index\n\nThe South Korean AI startup tripled its flagship model's intelligence score while targeting enterprise workflows that demand deep reasoning and massive context windows.\n\nUpstage’s latest reasoning model, Solar Pro 4, just landed with a score of 42 on the Artificial Analysis Intelligence Index. For context, its predecessor, Solar Pro 3, scored 14. That’s a 3x jump in a single generation.\n\nThe South Korean AI startup, founded in 2020, is positioning Solar Pro 4 as a purpose-built tool for enterprise environments drowning in documents, multi-step workflows, and complex reasoning tasks.\n\n## The numbers behind the upgrade\n\nSolar Pro 4’s benchmark performance tells a story of broad improvement rather than a single flashy headline number. On Terminal-Bench v2.1, a test designed to evaluate agentic task execution, the model scored 57%. Its long-context reasoning score (AA-LCR) hit 71%, reflecting better performance when processing lengthy documents. Multi-turn tool use, measured by the τ³-Banking benchmark, came in at 23%.\n\nThe most eye-catching figure might be the GDPval-AA v2 Elo rating for real-world work tasks: 1,277. The human baseline on that same evaluation sits at 1,000, meaning Solar Pro 4 is measurably outperforming the average human worker on the specific task categories being tested.\n\nThe model supports a context window of roughly 524K tokens. Solar Pro 4 also includes what Upstage calls a “reasoning-effort dial,” letting users balance depth of analysis against speed. Solar Pro 4 takes an average of 8.6 minutes per Intelligence Index task, compared to 6.0 minutes for Pro 3.\n\nSolar Pro 4 reportedly handles hallucinations better by simply abstaining from generating a response when it lacks sufficient evidence.\n\n## Aggressive pricing and distribution\n\nUpstage launched Solar Pro 4 with a promotional discount of 90% on API pricing, running until September 10, 2026. During the promotional window, input tokens cost $0.30 per million and output tokens run $1.20 per million.\n\nThe model is available through Upstage’s own API, OpenRouter, and through Nous Research’s Hermes Agent platform.\n\nThe language support is also worth noting: English, Korean, and Japanese.\n\n**Disclosure:** This article was edited by Editorial Team. For more information on how we create and review content, see our\n\n[Editorial Policy](https://cryptobriefing.com/editorial-policy/).", "url": "https://wpnews.pro/news/upstage-releases-solar-pro-4-scoring-42-on-intelligence-index", "canonical_source": "https://cryptobriefing.com/upstage-solar-pro-4-intelligence-index/", "published_at": "2026-08-12 17:29:08+00:00", "updated_at": "2026-08-12 17:54:56.641208+00:00", "lang": "en", "topics": ["artificial-intelligence", "large-language-models", "ai-products", "ai-startups"], "entities": ["Upstage", "Solar Pro 4", "Solar Pro 3", "Artificial Analysis Intelligence Index", "OpenRouter", "Nous Research", "Hermes Agent"], "alternates": {"html": "https://wpnews.pro/news/upstage-releases-solar-pro-4-scoring-42-on-intelligence-index", "markdown": "https://wpnews.pro/news/upstage-releases-solar-pro-4-scoring-42-on-intelligence-index.md", "text": "https://wpnews.pro/news/upstage-releases-solar-pro-4-scoring-42-on-intelligence-index.txt", "jsonld": "https://wpnews.pro/news/upstage-releases-solar-pro-4-scoring-42-on-intelligence-index.jsonld"}}