QPI 12.46 — -15.58% week over week
The Qubax AI Model Price Index (QPI) shows Qubax's blended price (75% input / 25% output) as a percentage of OpenRouter's price for a fixed basket of flagship AI models — 100 is parity, below 100 is cheaper. This week the index moved from 14.76 to 12.46 (-15.58%), meaning the median basket model now costs 88% less on Qubax than on OpenRouter.
Average discount vs OpenRouter across the basket: 75%.
Biggest price drops
| Model | Last week | This week | Change | Qubax discount |
|---|---|---|---|---|
| GPT-5.4 | $1.60 | $0.215 | -86.62% | 92% |
| Gemini 3.1 Pro Preview | $0.270 | $0.068 | -75.00% | 97% |
| Claude Opus 4.8 | $3.72 | $1.24 | -66.58% | 88% |
| GPT-5.3 Codex | $0.372 | $0.210 | -43.48% | 96% |
| Claude Sonnet 4.5 | $2.72 | $1.62 | -40.38% | 73% |
Biggest price increases
| Model | Last week | This week | Change | Qubax discount |
|---|---|---|---|---|
| DeepSeek R1 | $0.716 | $1.21 | +68.67% | -5% |
| DeepSeek V4 Pro | $0.058 | $0.076 | +31.03% | 86% |
| Grok 4.20 Beta | $0.202 | $0.239 | +18.61% | 85% |
| DeepSeek V4 Flash | $0.071 | $0.079 | +10.10% | -56% |
| GPT-5.2 | $0.337 | $0.359 | +6.78% | 85% |
How to read this
- QPI — Qubax blended price as % of OpenRouter's price (median across the basket). 100 = parity; lower = cheaper.
- Blended price — the price of a 3:1 input/output token mix, per 1M tokens.
- Change — week-over-week percentage change in blended price.
- Benchmark prices are OpenRouter list prices. Full methodology: QPI Methodology.
Data window: 2026-10-12 → 2026-10-19. Prices update daily at 08:00 UTC from live marketplace data. Historical charts: [AI Model Price Index](https://qubax.ai/price-index).
