---
title: "Why this model"
canonical: "https://openvibe.exchange/why"
updated: null
---

# Why this model

HTML: [Why this model](https://openvibe.exchange/why)

# Why this model

Every answer carries its receipt: what the router optimised, who answered, and why the others did not.

[Models](/models)

## The rule

1. The router starts from the offers that can do the job and are healthy right now.
2. It ranks them by the objective you asked for: cheapest, fastest, balanced, or private.
3. Your floor, price ceiling and privacy policy remove the offers that do not fit; a hard cap refuses instead of spending over it.
4. A provider that is down, out of balance or too slow is skipped and written down; a fallback that answers is named on the run.

It is the same router behind every Chat answer, every model page and every call to the endpoint; the receipt on a run is the router's own explanation, not a copy written for the page.

## Try it

Sign in to ask one question

The demo is one real run on your own allowance. Signed out, the rule and the live offers are below.

[Sign in with OpenVibe](/auth/login?next=%2Fwhy)

## The live offers it is choosing between

The cheapest priced offers in the catalog right now, with their measured speed and uptime.

| Model | Offer | In / out per M | Speed | Uptime |
| --- | --- | --- | --- | --- |
| [GPT-5 nano](/m/openai/gpt-5-nano) | OpenAI | $0.050 in / $0.40 out | 1.9 s p50 · 11.9 s p95 | 99.9% |
| [GPT-4o mini](/m/openai/gpt-4o-mini) | OpenAI | $0.15 in / $0.60 out | – p50 · – p95 | — |
| [DeepSeek V4.1 Flash](/m/deepseek/deepseek-flash) | DeepSeek | $0.30 in / $1.20 out | 2.2 s p50 · 2.2 s p95 | 4.3% |
| [GPT-4.1 mini](/m/openai/gpt-4.1-mini) | OpenAI | $0.40 in / $1.60 out | – p50 · – p95 | — |
| [GPT-5 mini](/m/openai/gpt-5-mini) | OpenAI | $0.25 in / $2.00 out | 2.6 s p50 · 6.2 s p95 | 99.6% |
| [DeepSeek V4 Pro](/m/deepseek/deepseek-v4-pro) | DeepSeek | $1.32 in / $3.96 out | – p50 · – p95 | — |

## Read it in the API

Every run response carries `explain`: the objective, the selected offer, the reasons, and every candidate with its estimated cost, latency and excluded reason. `GET /api/v1/runs/:id` on OpenVibe.AI returns the same object for a run you own.

~~~~
curl -s https://ai.openvibe.services/api/v1/runs/$RUN \
  -H "Authorization: Bearer $TOKEN" | jq .run.explain
~~~~

Keys and the endpoint: [the API](/api) · Start building: [four steps](/start).