Is o3 cheaper than Kimi v1-128k?
No, Kimi v1-128k is currently cheaper. Its starting input price is $0.278/1M tokens compared to o3's $0.4/1M tokens.
o3
Starting at $0.4/1M tkns
VS
Kimi v1-128k
Starting at $0.278/1M tkns
AI Overview: TL;DR
When comparing o3 and Kimi v1-128k API pricing for 2026, Kimi v1-128k is the more cost-effective option for basic input queries. It is approximately 31% cheaper starting at $0.278/1M tokens. However, your choice should also factor in context window limits (200k vs 131k) and supported modalities.
Technical Specifications & Pricing Table
| Feature | o3 | Kimi v1-128k |
|---|---|---|
| Starting Input Price | $0.4 / 1M tokens | $0.278 / 1M tokens |
| Model Category | GPT | Kimi |
| Max Context Window | 200k tokens | 131k tokens |
| Supported Modalities | text, image | text, image |
| Routed Channels Count | 6 channels | 3 channels |
Frequently Asked Questions
Which model has a larger context window?
o3 supports a maximum input context of 200,000 tokens, while Kimi v1-128k supports 131,072 tokens.