Compare Kimi K2.5 from moonshotai and GPT-5 Image Mini from OpenAI on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.
Kimi K2.5 and GPT-5 Image Mini are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Kimi K2.5, from moonshotai, has a 262,144-token context window and is priced at $0.45/M tokens input, $2.25/M tokens output on OpenRouter.
GPT-5 Image Mini, from OpenAI, has a 400,000-token context window and is priced at $2.50/M tokens input, $8/M tokens output on OpenRouter.
| Kimi K2.5 | GPT-5 Image Mini | |
|---|---|---|
| Input price | $0.45/M tokens | Not applicable |
| Output price | $2.25/M tokens | Not applicable |
| Context window | 262,144 tokens | 400,000 tokens |
| Intelligence Index | 19.4 | Not available |
| Coding Index | Not available | Not available |
| Agentic Index | Not available | Not available |
| Latency (p50) | 1.60 s | 10.11 s |
| Throughput (p50) | 24.0 tok/s | 108.0 tok/s |
GPT-5 Image Mini has the longer context window at 400,000 tokens, compared with 262,144 tokens for Kimi K2.5.
GPT-5 Image Mini is faster on OpenRouter, generating a median 108.0 tokens per second compared with 24.0 tokens per second for Kimi K2.5.