Pareto Code Router
CodingOpenRouter · Released April 2026
The Pareto Router maintains a tiered shortlist of strong coding models, ranked by [Artificial Analysis](https://artificialanalysis.ai/) coding percentiles.
It is an OpenRouter router rather than a model — it dispatches each request to an underlying model, so its cost and capabilities vary with the destination.
Facts and pricing
- Provider
- OpenRouter
- Context window
- 2M tokens
- Input price
- -1.2e+7 credits / 1M tokens ($-1.0e+6 raw)
- Output price
- -1.2e+7 credits / 1M tokens ($-1.0e+6 raw)
- Vision (image input)
- No
- Tool calling
- No
- Extended reasoning
- No
Credits are what Zeplik bills: 1 credit = $0.10, computed from the raw provider rate with a 1.20x margin. Raw prices shown per 1M tokens.
What Pareto Code Router is best for
- Writing, reviewing and refactoring code; agentic coding workflows
- Very long documents and codebases: a 2M-token window fits entire books or repositories in one conversation
Example prompts
Prompts that suit a coding model like Pareto Code Router:
- Refactor this function to be testable and write the tests
- Explain what this regex does and rewrite it to be readable
- Design a database schema for a multi-tenant invoicing app
- Review this pull request diff for correctness and edge cases
OpenRouter family
| Model | Context | Input cr/M | Output cr/M | Released |
|---|---|---|---|---|
| Auto Router (Beta) | 2M | -1.2e+7 | -1.2e+7 | July 2026 |
| Fusion | 1M | -1.2e+7 | -1.2e+7 | June 2026 |
| Pareto Code Router | 2M | -1.2e+7 | -1.2e+7 | April 2026 |
| Free Models Router | 200K | 0 | 0 | February 2026 |
| Body Builder (beta) | 128K | -1.2e+7 | -1.2e+7 | December 2025 |
| Auto Router | 2M | -1.2e+7 | -1.2e+7 | November 2023 |
Model comparisons
- Claude Opus 5.5 vs Claude Opus 5
- Claude Opus 5.5 vs GPT-6 Astra
- Claude Opus 5.5 vs GPT-6 Sol
- Claude Opus 5.5 vs Claude Sonnet 5
Frequently asked questions
- What is Pareto Code Router?
- Pareto Code Router is an AI model by OpenRouter. The Pareto Router maintains a tiered shortlist of strong coding models, ranked by [Artificial Analysis](https://artificialanalysis.ai/) coding percentiles.
- How much does Pareto Code Router cost on Zeplik?
- Input tokens cost -1.2e+7 credits per million and output tokens -1.2e+7 credits per million (1 credit = $0.10; the raw provider rates are $-1.0e+6 and $-1.0e+6 per million). New accounts start with free credits.
- How long can a conversation with Pareto Code Router be?
- Pareto Code Router has a 2M-token context window (2,000,000 tokens), which covers the conversation plus any documents you attach.
- Does Pareto Code Router support images and tools?
- Pareto Code Router is text-only and does not support tool calling.
Related models
The experimental version of our Auto Router where we test new improvements.
Fusion turns your prompt into a small multi-model deliberation.
The simplest way to get free inference. openrouter/free is a router that selects free models at random from the models available on OpenRouter.
Transform your natural language requests into structured OpenRouter API request objects. Describe what you want to accomplish with AI models, and Body Builder will construct the appropriate API calls.
The Auto Router automatically selects the best model for your prompt, powered by the wisdom of the market.
Ripple-65B-Preview by ricursiveAI, a 65B model with native tool calling, served in BF16.
More you can do with Pareto Code Router
- 468 AI skillsReady-to-run expert methods for writing, data, code and more, each running on Pareto Code Router or any model you pick.
- 997 integrationsConnect Gmail, Slack, GitHub, Notion and hundreds more so the assistant can work in your apps.
- Simple pricingPlus, Pro and Max plans with a monthly credit allowance that works across every model.