GPT-5.6 Luna vs Qwen3.8 Flash: Specs & Benchmark Comparison
| Characteristic | GPT-5.6 Luna | Qwen3.8 Flash |
|---|---|---|
| Company | OpenAI | Alibaba |
| Release Date | July 9, 2026 | August 26, 2026 |
| Parameters | — | 125B |
| Multimodal | Yes | Yes |
| Context (input) | 1.1M | 1.0M |
| Context (output) | 128K | 131K |
| Input Price / 1M | $0.20 | $0.15 |
| Output Price / 1M | $1.20 | $0.47 |
| Average Score | 0.5 | 0.7 |
| Benchmarks | ||
| OSWorld 2.0 | 0.5 | 0.2 |
| Toolathlon | 0.5 | 0.7 |
| DeepSWE 1.1 | 0.7 | 0.6 |
| Agents' Last Exam | 0.5 | 0.5 |
| GPQA | 0.9 | 0.9 |
| SWE-Bench Pro | 0.6 | 0.6 |
Visual Benchmark Comparison
GPT-5.6 Luna
Qwen3.8 Flash
OSWorld 2.00.5 vs 0.2
0.5
0.2
Toolathlon0.5 vs 0.7
0.5
0.7
DeepSWE 1.10.7 vs 0.6
0.7
0.6
Agents' Last Exam0.5 vs 0.5
0.5
0.5
GPQA0.9 vs 0.9
0.9
0.9
SWE-Bench Pro0.6 vs 0.6
0.6
0.6
Verdict
Qwen3.8 Flash leads in 2 out of 4 comparison categories.
Overall Performance
Both models show comparable average scores: GPT-5.6 Luna — 0.5, Qwen3.8 Flash — 0.7.
API Cost
Qwen3.8 Flash is 2.3x cheaper: input $0.15/1M vs $0.20/1M tokens.
Context Window
GPT-5.6 Luna supports a larger context: 1M vs 1M tokens.
Recency
Qwen3.8 Flash is newer: released 8/26/2026 vs 7/9/2026.
More About These Models
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Frequently Asked Questions
Which is better for coding — GPT-5.6 Luna or Qwen3.8 Flash?
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 Qwen3.8 Flash?
Qwen3.8 Flash is cheaper for input: $0.15 per 1M tokens vs $0.20.
Which has a larger context window — GPT-5.6 Luna or Qwen3.8 Flash?
GPT-5.6 Luna supports a larger context: 1,050,000 tokens vs 1,048,576.
The GPT-5.6 Luna and Qwen3.8 Flash 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 Qwen3.8 Flash page. See also the complete list of AI model comparisons.