OpenAI: GPT-5.5 Pro vs MoonshotAI: Kimi K2.6
Side-by-side comparison — pricing, context window, capabilities, and live leaderboard data.
Key differences
- OpenAI: GPT-5.5 Pro has a 1050K-token context window — 4.0× larger than MoonshotAI: Kimi K2.6's 262K.
- MoonshotAI: Kimi K2.6 is 98% cheaper per 1K input tokens than OpenAI: GPT-5.5 Pro ($0.0007 vs $0.0300).
- OpenAI: GPT-5.5 Pro is built by OpenAI; MoonshotAI: Kimi K2.6 is built by OpenRouter.
Specifications
| OpenAI: GPT-5.5 Pro | MoonshotAI: Kimi K2.6 | |
|---|---|---|
| Provider | OpenAI | OpenRouter |
| Context window | 1050K | 262K |
| Max output tokens | 8192 | 8192 |
| Input price / 1K tokens | $0.0300 | $0.0007 |
| Output price / 1K tokens | $0.1800 | $0.0035 |
| Vision support | Yes | Yes |
| Function calling | No | No |
| License | Proprietary | Open Weights |
About OpenAI: GPT-5.5 Pro
US·ClosedGPT-5.5 Pro is OpenAI’s high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads. It features a 1M+ token context window (922K input, 128K output) with support for...
View OpenAI: GPT-5.5 Pro reliability and benchmark history →About MoonshotAI: Kimi K2.6
CN·Open weightsKimi K2.6 is Moonshot AI's next-generation multimodal model, designed for long-horizon coding, coding-driven UI/UX generation, and multi-agent orchestration. It handles complex end-to-end coding tasks across Python, Rust, and Go, and...
View MoonshotAI: Kimi K2.6 reliability and benchmark history →Try them yourself
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