OpenRouter demo

\n Try out language models available on{\" \"}\n OpenRouter. This demo includes\n the top 100 models by usage in the last week, but you can easily\n {\" \"}\n \n remix this val\n {\" \"}\n to try more models.\n

\n \n {reply ?

{reply}

: null}\n {usage ? Tokens: {formatUsage(usage)} : null}\n {error ?

Error: {error}

: null}\n \n \n \n \n \n );\n}\n\nasync function listModels(): Promise {\n const page = await client.models.list({\n sort: \"top-weekly\",\n outputModalities: \"text\",\n limit: 100,\n });\n\n return page.result.data\n .filter((model) => !model.id.endsWith(\":batch\"))\n .map(({ id, name, pricing }) => ({ id, name, pricing }));\n}\n\nfunction groupByProvider(models: Model[]): Provider[] {\n const providers = new Map();\n\n for (const model of models) {\n const label = providerLabel(model);\n let provider = providers.get(label);\n if (!provider) {\n provider = { label, models: [] };\n providers.set(label, provider);\n }\n provider.models.push({\n id: model.id,\n name: modelLabel(model.name),\n pricing: model.pricing,\n });\n }\n\n return [...providers.values()];\n}\n\nfunction providerLabel(model: Model): string {\n if (model.name.includes(\": \")) return model.name.split(\": \")[0];\n return model.id.replace(/^~/, \"\").split(\"/\")[0];\n}\n\nfunction modelLabel(name: string): string {\n if (!name.includes(\": \")) return name;\n return name.split(\": \").slice(1).join(\": \");\n}\n\nfunction formatPricing({ prompt, completion }: Pricing): string {\n const input = Number(prompt) * 1_000_000;\n const output = Number(completion) * 1_000_000;\n\n if (input === 0 && output === 0) return \"free\";\n return `Tokens ${formatPrice(input)}/M in, ${formatPrice(output)}/M out`;\n}\n\nfunction formatPrice(perMillionTokens: number): string {\n if (perMillionTokens === 0) return \"free\";\n const decimals = perMillionTokens < 0.01 ? 4 : 2;\n return `$${perMillionTokens.toFixed(decimals)}`;\n}\n\nfunction formatUsage(usage: Usage): string {\n const cost = usage.cost == null\n ? \"cost unknown\"\n : usage.cost === 0\n ? \"free\"\n : `$${usage.cost.toFixed(6)}`;\n\n return `${usage.promptTokens} in / ${usage.completionTokens} out (${usage.totalTokens} total) · ${cost}`;\n}\n\ntype PageProps = {\n providers: Provider[];\n model?: string;\n prompt?: string;\n reply?: string;\n usage?: Usage | null;\n error?: string;\n};\n\ntype Pricing = {\n prompt: string;\n completion: string;\n};\n\ntype Model = {\n id: string;\n name: string;\n pricing: Pricing;\n};\n\ntype Provider = {\n label: string;\n models: Model[];\n};\n\ntype Usage = {\n promptTokens: number;\n completionTokens: number;\n totalTokens: number;\n cost?: number | 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