Moonshot AI vs 
OpenAI
Verdict
- OpenAI's flagship leads: GPT-6 Astra at 70.6 vs Kimi K3 at 66.5.
- OpenAI has the better model in 3 of 4 price bands.
- OpenAI's fastest ranked model (GPT-5.4 mini, 218 tok/s) beats Moonshot AI's (Kimi K2 Thinking, 119 tok/s).
- Moonshot AI publishes more open-weights models (7 vs 4).
- OpenAI ships more often: one model every 26 days against every 82.
Best model per price band
Each provider’s highest-index model below the price ceiling. Purple marks the winner of the band.
| Price band | Moonshot AI | OpenAI |
|---|---|---|
| Under $0.50/M | – | GPT-5.6 Luna xhigh 59.3$0.450/M |
| Under $2/M | Kimi K2.6 60.6$1.71/M | GPT-5.6 Luna xhigh 59.3$0.450/M |
| Under $10/M | Kimi K3 66.5$6.00/M | GPT-5.6 Sol high 68.0$8.00/M |
| Any price | Kimi K3 66.5$6.00/M | GPT-6 Astra max 70.6$22.00/M |
Line-up
| Metric | Moonshot AI | OpenAI |
|---|---|---|
| Flagship index | 66.5 | 70.6 |
| Ranked models | 8 | 38 |
| Open-weights models | 7 | 4 |
| Cheapest ranked, $/M | $1.07 | $0.085 |
| Fastest ranked, tok/s | 119 | 218 |
| Release cadence, days | 82 | 26 |
| Last release | 16 Jul 2026 | 3 Sept 2026 |
| Next expected | 3 Sept 2026 – 7 Nov 2026 | 18 Sept 2026 – 9 Oct 2026 |
Data as of 9 Sept 2026. See Moonshot AI and OpenAI in full.