Compare GPT-5.1-Codex-Mini by OpenAI against Qwen3 Coder Flash by Qwen, context windows of 400K vs 128K, tested across 55 shared challenges. Updated April 2026.
GPT-5.1-Codex-Mini and Qwen3 Coder Flash are both competitive models. GPT-5.1-Codex-Mini costs $1.5/M input tokens vs $0.3/M for Qwen3 Coder Flash. Context windows: 400K vs 128K tokens. Compare their real outputs side by side below.
GPT-5.1-Codex-Mini is made by openai while Qwen3 Coder Flash is from qwen. GPT-5.1-Codex-Mini has a 400K token context window compared to Qwen3 Coder Flash's 128K. On pricing, GPT-5.1-Codex-Mini costs $1.5/M input tokens vs $0.3/M for Qwen3 Coder Flash.
No community votes yet. On paper, GPT-5.1-Codex-Mini has the edge — bigger model tier, newer, bigger context window, major provider backing.
Qwen3 Coder Flash is 4.0x cheaper per token — worth considering if cost matters.
Qwen3 Coder Flash uses 21.3x more headings
Ask them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.

Compare GPT-5.1-Codex-Mini by OpenAI against Qwen3 Coder Flash by Qwen, context windows of 400K vs 128K, tested across 55 shared challenges. Updated April 2026.
GPT-5.1-Codex-Mini and Qwen3 Coder Flash are both competitive models. GPT-5.1-Codex-Mini costs $1.5/M input tokens vs $0.3/M for Qwen3 Coder Flash. Context windows: 400K vs 128K tokens. Compare their real outputs side by side below.
GPT-5.1-Codex-Mini is made by openai while Qwen3 Coder Flash is from qwen. GPT-5.1-Codex-Mini has a 400K token context window compared to Qwen3 Coder Flash's 128K. On pricing, GPT-5.1-Codex-Mini costs $1.5/M input tokens vs $0.3/M for Qwen3 Coder Flash.
No community votes yet. On paper, GPT-5.1-Codex-Mini has the edge — bigger model tier, newer, bigger context window, major provider backing.
Qwen3 Coder Flash is 4.0x cheaper per token — worth considering if cost matters.
Qwen3 Coder Flash uses 21.3x more headings
Ask them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.

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50 fights queued
38+ more head-to-head results. Free. Not a trick.
Free account. No card required. By continuing, you agree to Rival's Terms and Privacy Policy