Fusion
General purposeOpenRouter · Released June 2026
Fusion turns your prompt into a small multi-model deliberation. A panel of expert models (see below) analyzes your prompt in parallel with web search and web fetch enabled, then a...
Facts and pricing
- Provider
- OpenRouter
- Context window
- 1M tokens
- Input price
- -1.1e+7 credits / 1M tokens ($-1.0e+6 raw)
- Output price
- -1.1e+7 credits / 1M tokens ($-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 1.10x margin. Raw prices shown per 1M tokens.
What Fusion is best for
- Balanced everyday work: writing, questions, brainstorming and summarization
- Very long documents and codebases: a 1M-token window fits entire books or repositories in one conversation
OpenRouter family
| Model | Context | Input cr/M | Output cr/M | Released |
|---|---|---|---|---|
| Auto Router (Beta) | 2M | -1.1e+7 | -1.1e+7 | July 2026 |
| Fusion | 1M | -1.1e+7 | -1.1e+7 | June 2026 |
| Pareto Code Router | 2M | -1.1e+7 | -1.1e+7 | April 2026 |
| Free Models Router | 200K | 0 | 0 | February 2026 |
| Body Builder (beta) | 128K | -1.1e+7 | -1.1e+7 | December 2025 |
| Auto Router | 2M | -1.1e+7 | -1.1e+7 | November 2023 |
Frequently asked questions
- What is Fusion?
- Fusion is an AI model by OpenRouter. Fusion turns your prompt into a small multi-model deliberation. A panel of expert models (see below) analyzes your prompt in parallel with web search and web fetch enabled, then a...
- How much does Fusion cost on Zeplik?
- Input tokens cost -1.1e+7 credits per million and output tokens -1.1e+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 Fusion be?
- Fusion has a 1M-token context window (1,000,000 tokens), which covers the conversation plus any documents you attach.
- Does Fusion support images and tools?
- Fusion is text-only and does not support tool calling.
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More you can do with Fusion
- 465 AI skillsReady-to-run expert methods for writing, data, code and more, each running on Fusion 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.