OpenRouter: Fusion✓ Catalog verified
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...
Overview
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...
Access: available through the official Openrouter API. Context window: 1M.
Specifications
| API identifier | openrouter/fusion |
| Provider | Openrouter |
| Model type | Text LLM |
| Context window | 1M catalog |
| Input modalities | text |
| Output modalities | text |
| Released | Jun 13, 2026 |
| Tokenizer | Router |
| Moderated | No |
| Architecture modality | text->text |
API defaults
{
"top_k": null,
"top_p": null,
"temperature": null,
"presence_penalty": null,
"frequency_penalty": null,
"repetition_penalty": null
}Pricing
Live pricing components for openrouter/fusion as published in the catalog.
| Pricing component | Raw unit price | Normalized | Unit |
|---|---|---|---|
| Prompt tokens | $-1 | $-1000000.00 / 1M | Per input token |
| Completion tokens | $-1 | $-1000000.00 / 1M | Per output token |
| Request fee | N/A | N/A | Per request |
| Image fee | N/A | N/A | Per image unit |
| Web search fee | N/A | N/A | Per search request |
Cost calculator
Estimate monthly spend from your own token volumes.
Estimated Total Cost
$-700,000Calculated from current list pricing in the ModelsAtlas catalog.Capabilities
| Capability | Status | What it means |
|---|---|---|
| Visual Understanding | Not advertised | Image and document analysis support |
| Audio Processing | Not advertised | Speech and voice aligned flows |
| Tool Calling | Not advertised | Supports tools / function calling |
| Self-Hosting | Not advertised | Deploy outside managed APIs |
Capability signals
Directional signals derived from model metadata and capability tags — not official benchmark submissions.
Quick start
Call OpenRouter: Fusion through an OpenAI-compatible client.
from openai import OpenAI
client = OpenAI(
base_url="https://openrouter.ai/api/v1",
api_key="YOUR_API_KEY"
)
response = client.chat.completions.create(
model="openrouter/fusion",
messages=[{"role": "user", "content": "Explain quantum physics."}]
)
print(response.choices[0].message.content)Alternatives
Closest models by context window from a different provider.
| Model | Provider | Context | Input /1M | Actions |
|---|---|---|---|---|
| Anthropic Claude Sonnet Latest | ~anthropic | 1M | $2.00 | View → |
| Anthropic: Claude Fable Latest | ~anthropic | 1M | $10.00 | View → |
Sources & attribution
Pricing and metadata are maintained in the ModelsAtlas catalog.
Frequently asked questions
How much does OpenRouter: Fusion cost?
$-1000000.00 per 1M input tokens and $-1000000.00 per 1M output tokens on the official Openrouter API.
What is the context window of OpenRouter: Fusion?
OpenRouter: Fusion supports up to 1M tokens of context.
Does OpenRouter: Fusion support tool / function calling?
OpenRouter: Fusion does not advertise first-class tool/function calling. Check vendor docs for the latest capabilities.
How do I access OpenRouter: Fusion?
Use the official Openrouter API with the model id `openrouter/fusion`. See the Quick start section above for code examples.