Kimi K2.6 is $4.26 cheaper per 1M input tokens (85.2% lower; 6.76x difference).
API cost decision in 10 seconds
🔥Kimi K2.6 vs 🔥GPT-5.5
Pick Kimi K2.6 for lower cost; pick GPT-5.5 only if the larger context window matters more.
Pricing data updated:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Kimi K2.6 for lower cost; pick GPT-5.5 only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Kimi K2.6 is estimated at $2.49 vs $20 for GPT-5.5, saving $17.51 (87.5% lower).
Cost-first pickKimi K2.6
Context-first pickGPT-5.5
Sample savings$17.5187.5%
10x traffic gap$175.1
GPT-5.5 has more context, but Kimi K2.6 saves $17.51 on the standard workload. At 10x that traffic, the same price gap is about $175.1. Use the calculator below to replace the sample workload with your own token volume.
Kimi K2.6 is $26.5 cheaper per 1M output tokens (88.3% lower; 8.57x difference).
GPT-5.5 has 787.86K more context (4.01x larger).
Kimi K2.6 is $17.51 cheaper on the standard workload (87.5% lower).
Estimate your workload cost
Your Workload Cost
This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.
Quick Decision
Kimi K2.6 has the lower input price; Kimi K2.6 has the lower output price; GPT-5.5 offers the larger context window. For the 1M input plus 500K output sample, Kimi K2.6 is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $2.49 for Kimi K2.6 and $20 for GPT-5.5.
Choose Kimi K2.6 when you care most about lower input-token price, and lower output-token price.
Choose GPT-5.5 when you care most about larger context window.
- On the standard 1M input plus 500K output workload, Kimi K2.6 is estimated at $2.49 vs $20 for GPT-5.5, saving $17.51 (87.5% lower).
- Kimi K2.6 is $17.51 cheaper on the standard workload (87.5% lower).
- Kimi K2.6 is $4.26 cheaper per 1M input tokens (85.2% lower; 6.76x difference).
- Kimi K2.6 is $26.5 cheaper per 1M output tokens (88.3% lower; 8.57x difference).
- GPT-5.5 has 787.86K more context (4.01x larger).
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Kimi K2.6 | On the standard 1M input plus 500K output workload, Kimi K2.6 is estimated at $2.49 vs $20 for GPT-5.5, saving $17.51 (87.5% lower). |
| High-volume input processing | Kimi K2.6 | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Kimi K2.6 | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | GPT-5.5 | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
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Open OpenAI modelsKimi 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...
GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...