Compare Claude 3 Opus by Anthropic against Qwen: Qwen3.5 Flash by Qwen, context windows of 200K vs 1.0M, tested across 12 shared challenges. Updated April 2026.
Claude 3 Opus and Qwen: Qwen3.5 Flash are both competitive models. Claude 3 Opus costs $15/M input tokens vs $0.1/M for Qwen: Qwen3.5 Flash. Context windows: 200K vs 1000K tokens. Compare their real outputs side by side below.
Claude 3 Opus is made by anthropic while Qwen: Qwen3.5 Flash is from qwen. Claude 3 Opus has a 200K token context window compared to Qwen: Qwen3.5 Flash's 1000K. On pricing, Claude 3 Opus costs $15/M input tokens vs $0.1/M for Qwen: Qwen3.5 Flash.
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Qwen: Qwen3.5 Flash is 188x cheaper per token — worth considering if cost matters.
Qwen: Qwen3.5 Flash uses 687.0x more bold
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 Claude 3 Opus by Anthropic against Qwen: Qwen3.5 Flash by Qwen, context windows of 200K vs 1.0M, tested across 12 shared challenges. Updated April 2026.
Claude 3 Opus and Qwen: Qwen3.5 Flash are both competitive models. Claude 3 Opus costs $15/M input tokens vs $0.1/M for Qwen: Qwen3.5 Flash. Context windows: 200K vs 1000K tokens. Compare their real outputs side by side below.
Claude 3 Opus is made by anthropic while Qwen: Qwen3.5 Flash is from qwen. Claude 3 Opus has a 200K token context window compared to Qwen: Qwen3.5 Flash's 1000K. On pricing, Claude 3 Opus costs $15/M input tokens vs $0.1/M for Qwen: Qwen3.5 Flash.
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Qwen: Qwen3.5 Flash is 188x cheaper per token — worth considering if cost matters.
Qwen: Qwen3.5 Flash uses 687.0x more bold
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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12 fights queued