GPT-5.6 Terra vs Kimi K2.7 Code — LLM API Cost Comparison
Compare GPT-5.6 Terra (OpenAI) vs Kimi K2.7 Code (Kimi (Moonshot AI)) on cost per million tokens, context window, and monthly spend.
Prices verified 2026-08-03 · Pricing may change — use the calculator for current estimates
- Input
- $2/1M tokens
- Output
- $12/1M tokens
- Context
- 1M tokens
- Released
- 2026-07
OpenAI balanced GPT-5.6 tier; 1.05M context
- Input
- $0.95/1M tokens
- Output
- $4/1M tokens
- Context
- 262K tokens
- Released
- 2026-07
Coding-focused model; $0.19/1M cached input, 256K context, thinking and multimodal input
Monthly Cost by Usage Tier (70% input / 30% output ratio)
| Usage | GPT-5.6 Terra | Kimi K2.7 Code | Cheaper by |
|---|---|---|---|
| Light (1M tokens) | $5.00 | $1.86 | Kimi K2.7 Code (63%) |
| Moderate (10M tokens) | $50.00 | $18.65 | Kimi K2.7 Code (63%) |
| Heavy (100M tokens) | $500 | $187 | Kimi K2.7 Code (63%) |
| Very Heavy (1B tokens) | $5,000 | $1,865 | Kimi K2.7 Code (63%) |
Frequently Asked Questions
Which is cheaper — GPT-5.6 Terra or Kimi K2.7 Code?
For input tokens, Kimi K2.7 Code is cheaper at $0.95/1M tokens — 2.1× less than $2/1M. For output tokens, Kimi K2.7 Code wins at $4/1M vs $12/1M. At heavy workloads (100M tokens/month), the cost difference can be significant.
What is the context window difference between GPT-5.6 Terra and Kimi K2.7 Code?
GPT-5.6 Terra supports 1,050,000 tokens per request; Kimi K2.7 Code supports 262,144 tokens. GPT-5.6 Terra wins on context length, making it better for long documents, large codebases, or extended conversations without chunking.
When should I choose GPT-5.6 Terra over Kimi K2.7 Code?
Choose GPT-5.6 Terra (OpenAI) if you prefer OpenAI's ecosystem, tooling, or reliability track record. OpenAI balanced GPT-5.6 tier; 1.05M context. Choose Kimi K2.7 Code (Kimi (Moonshot AI)) if Coding-focused model; $0.19/1M cached input, 256K context, thinking and multimodal input. the price/performance fits your workload better. Use this calculator to find the break-even point for your exact token volume.
How much does 1 billion tokens cost on GPT-5.6 Terra vs Kimi K2.7 Code?
At 700M input + 300M output tokens (1B total): GPT-5.6 Terra costs $5000; Kimi K2.7 Code costs $1865. The difference is $3135/billion tokens at this 70/30 input/output ratio.