Developers

Use Pareto on OpenRouter

Pareto, the blended model from Unbiased, is available on OpenRouter. If you already send traffic through OpenRouter, you can call it with one model slug.

By the Unbiased Team · Updated October 18, 2026

The model slug

Use unbiased/pareto-26.10 to pin Pareto 26.10. OpenRouter also lists ~unbiased/pareto-latest, which it describes as always redirecting to the latest model in the Pareto family. Model page: openrouter.ai/unbiased/pareto-26.10.

A request

curl https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "unbiased/pareto-26.10", "messages": [{"role": "user", "content": "Hello"}]}'

OpenRouter’s API is OpenAI-compatible, so most clients only need the base URL https://openrouter.ai/api/v1, your OpenRouter key and the slug. OpenRouter lists these parameters for the Pareto endpoint: max_tokens, temperature, top_p, tools and tool_choice. Validate streaming, tools and error handling in your own client.

Prices

As listed on OpenRouter on October 18, 2026: $0.80 per million input tokens, $0.03 per million cache-read tokens and $3.20 per million output tokens, with a 1,048,576-token context window and up to 131,072 output tokens. OpenRouter bills OpenRouter usage; check the model page for current rates and any OpenRouter fees.

Direct from Unbiased: $0.80 input, $0.03 cached input and $3.20 output per million tokens, or a Personal ($10/month, 50M tokens a week) or Personal Max ($100/month, 600M tokens a week) plan. See pricing.

Data handling

How Circuit & Chisel, which runs Unbiased, handles prompts and responses is set by our Terms, section 5(c) and Data Policy. OpenRouter’s own data policies also apply to your use of OpenRouter.

OpenRouter or the Unbiased API?

• OpenRouter: you already use it, or want one key and one bill across many models.
• Unbiased API: you want our plans and rates, direct support and onboarding, and the Anthropic Messages format (/v1/messages) as well as OpenAI chat completions. Start at the API docs.

Not the same as OpenRouter’s “Pareto Code Router”

OpenRouter also offers openrouter/pareto-code, its own product for picking coding models. It’s a separate OpenRouter product, not Pareto from Unbiased. For our model, use unbiased/pareto-26.10.

Questions

Is Pareto on OpenRouter?

Yes. Unbiased serves Pareto 26.10 on OpenRouter as unbiased/pareto-26.10.

What does Pareto cost on OpenRouter?

As listed on OpenRouter on October 18, 2026: $0.80 per million input tokens, $0.03 per million cache-read tokens and $3.20 per million output tokens. Check OpenRouter’s model page for current rates.

Is Pareto the same as OpenRouter’s Pareto Code Router?

No. openrouter/pareto-code is OpenRouter’s own product for picking coding models. Pareto from Unbiased is unbiased/pareto-26.10.