GLM-5.3 vs Kimi K2.6: Specs & Benchmark Comparison
GLM-5.3 is developed by Zhipu AI, while Kimi K2.6 comes from Moonshot AI. Kimi K2.6 was released in April 2026, and GLM-5.3 followed 4 months later in August 2026. The two are similar in size, at about 753 billion and 1.0 trillion parameters respectively.
The two models share 3 published benchmarks. GLM-5.3 leads on 3 of them. The widest gaps are on FrontierSWE, where GLM-5.3 scores 78.0% against 27.0%; Humanity's Last Exam, where GLM-5.3 scores 62.5% against 36.4%. Averaged across everything we track, GLM-5.3 sits at 52.2% and Kimi K2.6 at 71.2%.
Kimi K2.6 is the cheaper API at $1.20 per million input tokens and $4.50 per million output tokens, about 17% below GLM-5.3 at $1.40 and $4.40. GLM-5.3 takes the larger context window at 1M tokens, compared with 262K for Kimi K2.6. GLM-5.3 accepts text as input, while Kimi K2.6 accepts text and images.
| Characteristic | GLM-5.3 | Kimi K2.6 |
|---|---|---|
| Company | Zhipu AI | Moonshot AI |
| Release Date | August 14, 2026 | April 20, 2026 |
| Parameters | 753B | 1.0T |
| Multimodal | No | Yes |
| Context (input) | 1.0M | 262K |
| Context (output) | 131K | 131K |
| Input Price / 1M | $1.40 | $1.20 |
| Output Price / 1M | $4.40 | $4.50 |
| Average Score | 52.2% | 71.2% |
| Benchmarks | ||
| FrontierSWE | 78.0% | 27.0% |
| Humanity's Last Exam | 62.5% | 36.4% |
| Toolathlon | 73.0% | 50.0% |
Visual Benchmark Comparison
Verdict
GLM-5.3 leads in 2 out of 4 comparison categories.
Both models show comparable average scores: GLM-5.3 — 0.5, Kimi K2.6 — 0.7.
Kimi K2.6 is 1.0x cheaper: input $1.20/1M vs $1.40/1M tokens.
GLM-5.3 supports a larger context: 1M vs 262K tokens.
GLM-5.3 is newer: released 8/14/2026 vs 4/20/2026.
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Frequently Asked Questions
Which is better for coding — GLM-5.3 or Kimi K2.6?
Which model is cheaper — GLM-5.3 or Kimi K2.6?
Which has a larger context window — GLM-5.3 or Kimi K2.6?
The GLM-5.3 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 GLM-5.3 or Kimi K2.6 page. See also the complete list of AI model comparisons.