token.app › Compare › o3 Pro vs Kimi K3
o3 Pro vs Kimi K3
Kimi K3 is 5.8× cheaper per token on a blended 3:1 basis. Kimi K3 accepts the larger context window (1.0M).
Head to head
Blended price uses a 3:1 input:output mix
| o3 Pro | Kimi K3 | |
|---|---|---|
| Provider | OpenAI | Moonshot AI |
| Input $/1M | $20.00 | $3.00 |
| Output $/1M | $80.00 | $15.00 |
| Blended $/1M | $35.00 | $6.00 |
| Context window | 200K | 1.0M |
| Max output | 100K | — |
| Released | Jun 2025 | Jul 2026 |
| Licence | Proprietary | Open weights |
Choose o3 Pro if…
- No clear advantage on the data we hold.
Choose Kimi K3 if…
- Costs less per token — $6.00 vs $35.00 blended
- Larger context window (1.0M)
- Open weights — self-hostable
- Newer model (released Jul 2026)
FAQ
Which is better, o3 Pro or Kimi K3?
We do not hold independently-run benchmark scores covering both o3 Pro and Kimi K3, so we make no quality claim. Their pricing and specifications are compared on this page.
Is o3 Pro cheaper than Kimi K3?
Kimi K3 is cheaper: $6.00 versus $35.00 per million tokens blended at 3:1 input:output. Input alone: $20.00 vs $3.00. Output alone: $80.00 vs $15.00.
What context windows do o3 Pro and Kimi K3 have?
o3 Pro: 200,000 tokens. Kimi K3: 1,048,576 tokens.
Who makes o3 Pro and Kimi K3?
o3 Pro is made by OpenAI. Kimi K3 is made by Moonshot AI.