Claude Opus 5 vs Qwen3.8 Flash: Specs & Benchmark Comparison
| Characteristic | Claude Opus 5 | Qwen3.8 Flash |
|---|---|---|
| Company | Anthropic | Alibaba |
| Release Date | July 24, 2026 | August 26, 2026 |
| Parameters | — | 125B |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 1.0M |
| Context (output) | 128K | 131K |
| Input Price / 1M | $5.00 | $0.15 |
| Output Price / 1M | $25.00 | $0.47 |
| Average Score | 0.6 | 0.7 |
| Benchmarks | ||
| OSWorld 2.0 | 0.7 | 0.2 |
| Humanity's Last Exam | 0.6 | 0.4 |
| DeepSWE 1.1 | 0.7 | 0.6 |
Visual Benchmark Comparison
Claude Opus 5
Qwen3.8 Flash
OSWorld 2.00.7 vs 0.2
0.7
0.2
Humanity's Last Exam0.6 vs 0.4
0.6
0.4
DeepSWE 1.10.7 vs 0.6
0.7
0.6
Verdict
Qwen3.8 Flash leads in 3 out of 4 comparison categories.
Overall Performance
Both models show comparable average scores: Claude Opus 5 — 0.6, Qwen3.8 Flash — 0.7.
API Cost
Qwen3.8 Flash is 48.4x cheaper: input $0.15/1M vs $5.00/1M tokens.
Context Window
Qwen3.8 Flash supports a larger context: 1M vs 1M tokens.
Recency
Qwen3.8 Flash is newer: released 8/26/2026 vs 7/24/2026.
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Frequently Asked Questions
Which is better for coding — Claude Opus 5 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 — Claude Opus 5 or Qwen3.8 Flash?
Qwen3.8 Flash is cheaper for input: $0.15 per 1M tokens vs $5.00.
Which has a larger context window — Claude Opus 5 or Qwen3.8 Flash?
Qwen3.8 Flash supports a larger context: 1,048,576 tokens vs 1,000,000.
The Claude Opus 5 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 Claude Opus 5 or Qwen3.8 Flash page. See also the complete list of AI model comparisons.