Is GPT-5 mini cheaper than Kimi v1-128k?
Yes, GPT-5 mini is primarily cheaper with a starting input price of $0.05/1M tokens, which is about 82% less than Kimi v1-128k's $0.278/1M tokens.
GPT-5 mini
Starting at $0.05/1M tkns
VS
Kimi v1-128k
Starting at $0.278/1M tkns
AI Overview: TL;DR
When comparing GPT-5 mini and Kimi v1-128k API pricing for 2026, GPT-5 mini is the more cost-effective option for basic input queries. It is approximately 82% cheaper starting at $0.05/1M tokens. However, your choice should also factor in context window limits (128k vs 131k) and supported modalities.
Technical Specifications & Pricing Table
| Feature | GPT-5 mini | Kimi v1-128k |
|---|---|---|
| Starting Input Price | $0.05 / 1M tokens | $0.278 / 1M tokens |
| Model Category | GPT | Kimi |
| Max Context Window | 128k tokens | 131k tokens |
| Supported Modalities | text, image | text, image |
| Routed Channels Count | 8 channels | 3 channels |
Frequently Asked Questions
Which model has a larger context window?
GPT-5 mini supports a maximum input context of 128,000 tokens, while Kimi v1-128k supports 131,072 tokens.