{"data":{"id":"upstage/solar-pro4","provider_id":"upstage","name":"Upstage: Solar Pro 4","modalities":["text"],"context_window":524288,"family":"solar-pro4","status":"active","description":"Solar Pro 4 is Upstage's cost-efficient large language model, featuring a 524K context window. It is built for long-horizon tasks and agentic workflows, with strong capabilities in office productivity, document-intensive...","architecture":{"modality":"text->text","input_modalities":["text"],"output_modalities":["text"],"tokenizer":"Other","instruct_type":null},"supported_parameters":["frequency_penalty","include_reasoning","max_tokens","parallel_tool_calls","presence_penalty","reasoning","reasoning_effort","response_format","structured_outputs","temperature","tool_choice","tools","top_p"],"created_at":1786371636,"canonical_slug":"upstage/solar-pro4-20260810","catalog_source":"openrouter","host_id":"openrouter","host_name":"OpenRouter","creator_id":"upstage","creator_name":"Upstage","cheapest_provider":"upstage","cheapest_provider_name":"Upstage","cheapest_price":0.2625,"savings_pct":null,"savings_basis":null,"provider":{"id":"upstage","name":"Upstage","website":"https://openrouter.ai/upstage","categories":["text"],"docs_url":"https://openrouter.ai/models","notes":"Live OpenRouter feed. Prices are OpenRouter list rates, not a contract with the origin lab.","role":"lab"},"prices":[{"id":889,"model_id":"upstage/solar-pro4","unit":"token","input_per_1m_usd":0.15,"output_per_1m_usd":0.6,"flat_usd":null,"currency":"USD","effective_at":"2026-10-20","source_url":"https://openrouter.ai/upstage/solar-pro4","notes":"OpenRouter list rate. Token fields are USD per token converted to per 1M. Flat image, request, and web_search fields are USD per unit and are not rescaled. Cache read 0.03/1M.","last_verified_at":"2026-10-20T00:15:40.825Z","source":"openrouter","confidence":"official","cache_read_per_1m_usd":0.03,"cache_write_per_1m_usd":null,"cache_write_1h_per_1m_usd":null,"pricing_detail":null,"long_context_override":false}]}}