GPT-5.6 Luna vs Kimi K2.6: Specs & Benchmark Comparison
| Characteristic | GPT-5.6 Luna | Kimi K2.6 |
|---|---|---|
| Company | OpenAI | Moonshot AI |
| Release Date | July 9, 2026 | April 20, 2026 |
| Parameters | — | 1.0T |
| Multimodal | Yes | Yes |
| Context (input) | 1.1M | 262K |
| Context (output) | 128K | 131K |
| Input Price / 1M | $0.20 | $1.20 |
| Output Price / 1M | $1.20 | $4.50 |
| Average Score | 0.5 | 0.9 |
Verdict
GPT-5.6 Luna leads in 3 out of 4 comparison categories.
Overall Performance
Both models show comparable average scores: GPT-5.6 Luna — 0.5, Kimi K2.6 — 0.9.
API Cost
GPT-5.6 Luna is 4.1x cheaper: input $0.20/1M vs $1.20/1M tokens.
Context Window
GPT-5.6 Luna supports a larger context: 1M vs 262K tokens.
Recency
GPT-5.6 Luna is newer: released 7/9/2026 vs 4/20/2026.
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Frequently Asked Questions
Which is better for coding — GPT-5.6 Luna or Kimi K2.6?
Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.
Which model is cheaper — GPT-5.6 Luna or Kimi K2.6?
GPT-5.6 Luna is cheaper for input: $0.20 per 1M tokens vs $1.20.
Which has a larger context window — GPT-5.6 Luna or Kimi K2.6?
GPT-5.6 Luna supports a larger context: 1,050,000 tokens vs 262,144.
The GPT-5.6 Luna and Kimi K2.6 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the GPT-5.6 Luna or Kimi K2.6 page. See also the complete list of AI model comparisons.