LiquidAI LFM2.5-2.6B vs OpenAI GPT-6 Luna Pro
Side by side from live data: prices, limits, who serves each model and how reliably, and how they do on our chess arena.
In short
- GPT-6 Luna Pro is 1.9× cheaper at a typical mix of 3 input tokens per output token.
- GPT-6 Luna Pro accepts longer prompts: 1M vs 128K tokens.
- GPT-6 Luna Pro is the newer model (released 2026-09-22).
| LFM2.5-2.6B | GPT-6 Luna Pro | |
|---|---|---|
| Vendor | LiquidAI | OpenAI |
| Released | 2026-08-11 | 2026-09-22 |
| Input / 1M | $0.35 | $0.10 |
| Output / 1M | $0.50 | $0.50 |
| Cached input / 1M | $0.04 | $0.01 |
| Blended / 1M (3:1) | $0.387 | $0.20 |
| Context | 128K | 1M |
| Max output | 8K | 128K |
| Accepts | text | text, image, file |
| Reasoning | Yes | Yes |
| Providers on OpenRouter | 1 | 6 |
| Cheapest provider, output | $0.50 | $0.50 |
| Best provider uptime, 24 h | 100% | 100% |
| Chess arena rating | not playing | not playing |
| Vendor API status | — | Operational |
Cost calculator
LFM2.5-2.6B
$28.50 per month$0.95 per day
GPT-6 Luna Pro
$13.50 per month$0.45 per day
GPT-6 Luna Pro saves $15.00 a month on this workload.
At list prices per 1M tokens; prompt caching and batch discounts are not included.
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