{"slug": "union-alpha-is-unbiased-pareto", "title": "Union Alpha Is Unbiased Pareto", "summary": "OpenRouter is hosting Pareto, a multimodal composite model built for research, coding, and agentic workflows, at $2.50 per million input tokens and $7.50 per million output tokens, with cache reads priced at $0.25 per million tokens. Pareto carries a 262,144-token context window, supports up to 131,072 completion tokens, accepts text and images as input, returns text, and supports tool calling plus JSON output via response_format without JSON-schema enforcement. OpenRouter forwards every request to the single provider hosting the model, with no routing decisions required.", "body_md": "Pareto is a multimodal composite model built for research, coding, and agentic workflows, while delivering frontier-level performance across a broad range of general-purpose tasks.\n\nThis model is hosted by one provider. OpenRouter forwards every request to it directly — no routing decisions to make.\n\nPricing\n\nThe average price customers actually pay for this model, next to the prices providers post. Caching and discounts mean the price actually paid is often well below the listed one.\n\nPerformance\n\nThroughput is how fast the model writes (tokens per second — higher is better). Latency is total round-trip time (lower is better). TTFT is time-to-first-token — how long before you see anything appear (lower is better).\n\nUptime\n\nUptime is the percentage of the past 3 days that at least one provider was responding to requests. Availability is the percentage of time that inference was successfully served. OpenRouter continuously monitors and uses the next-best provider when one returns an error.\n\nApps\n\nPublic apps that send the most traffic to this model. Good signal for what real production workloads look like — and a hint at which use cases this model is best suited for.\n\nActivity\n\nToken volume and request traffic to this model over time.\n\nQuick Start\n\nDrop-in code to call this model. OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. The only thing that changes between models is the model slug below.\n\nWhen an error occurs in an upstream provider, we can recover by routing to another healthy provider, if your request filters allow it. You can access per-provider uptime data programmatically through the Endpoints API. Learn more about our load balancing and customization options.\n\nNot enough data for apps using this model yet.\n\nFrequently asked questions\n\nWhat is Pareto?\n\nPareto is a multimodal composite model built for research, coding, and agentic workflows, while delivering frontier-level performance across a broad range of general-purpose tasks.\n\nHow much does Pareto cost?\n\nPareto costs $2.50/M input tokens and $7.50/M output tokens, with separate rates for Cache Read at $0.25/M tokens.\n\nWhat is the context length of Pareto?\n\nPareto has a 262,144 token context window. It supports up to 131,072 completion tokens.\n\nDoes Pareto support tool calling and structured outputs?\n\nYes. Pareto accepts tools and tool_choice for function calling. It supports response_format for JSON output, without JSON-schema enforcement.\n\nWhat inputs and outputs does Pareto support?\n\nPareto accepts text and images as input and returns text.", "url": "https://wpnews.pro/news/union-alpha-is-unbiased-pareto", "canonical_source": "https://openrouter.ai/unbiased/pareto", "published_at": "2026-09-17 23:16:19+00:00", "updated_at": "2026-09-17 23:25:03.817622+00:00", "lang": "en", "topics": ["large-language-models", "ai-agents", "ai-products", "ai-infrastructure"], "entities": ["OpenRouter", "Pareto"], "alternates": {"html": "https://wpnews.pro/news/union-alpha-is-unbiased-pareto", "markdown": "https://wpnews.pro/news/union-alpha-is-unbiased-pareto.md", "text": "https://wpnews.pro/news/union-alpha-is-unbiased-pareto.txt", "jsonld": "https://wpnews.pro/news/union-alpha-is-unbiased-pareto.jsonld"}}