Claude Sonnet 4vsQwen3 Coder Flash
Qwen3 Coder Flash is cheaper than Claude Sonnet 4 at $0.3/M vs $3/M input tokens.
| Spec | Claude Sonnet 4 | Qwen3 Coder Flash |
|---|---|---|
| Input price | $3/M tokens | $0.3/M tokens |
| Output price | $15/M tokens | $1.5/M tokens |
| Context window | 200K tokens | 128K tokens |
| Weights | Closed | Closed |
| Free API (OpenRouter) | No | No |
| Released | May 2025 | Sep 2025 |
| SWE-bench Verified | 72.7% | 50.3% |
Our Verdict
Claude Sonnet 4
Qwen3 Coder FlashRunner-up
Not enough votes to call it. On the specs, Claude Sonnet 4 has the edge: bigger model tier, bigger context window, major provider backing.
Qwen3 Coder Flash costs 10x less per token.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
Claude Sonnet 4
Input
$3.00
Output
$15.00
Qwen3 Coder Flash
Input
$0.30
10× cheaper
Output
$1.50
10× cheaper
Qwen3 Coder Flash is cheaper on both: 10× input, 10× output.
Where to run it
3 hosts
Claude Sonnet 42 hosts
Qwen3 Coder Flash1 host
Per million tokens. Prices and uptime via OpenRouter, checked 13 Sep 2026.
Writing DNA
Style Comparison
Similarity
95%
Claude Sonnet 4 uses 3.2x more emoji
Claude Sonnet 4
Qwen3 Coder Flash
64%Vocabulary60%
81wSentence Length85w
0.56Hedging0.56
4.5Bold5.6
6.6Lists5.8
0.70Emoji0.22
1.59Headings1.49
0.20Transitions0.15
Based on 28 + 28 text responses
Research
What we learned reading every model
FAQ
Common questions
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