Claude Sonnet 3.6 (2022-10-22)
Nothing here. The model returned empty. We stared at it for a while.
Claude Sonnet 3.6 (2022-10-22) vs GPT-5.3-Codex
Compare Claude Sonnet 3.6 (2022-10-22) by Anthropic against GPT-5.3-Codex by OpenAI, context windows of 200K vs 400K, tested across 53 shared challenges. Updated April 2026.
Which is better, Claude Sonnet 3.6 (2022-10-22) or GPT-5.3-Codex?
Claude Sonnet 3.6 (2022-10-22) and GPT-5.3-Codex are both competitive models. Claude Sonnet 3.6 (2022-10-22) costs $3/M input tokens vs $1.75/M for GPT-5.3-Codex. Context windows: 200K vs 400K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Sonnet 3.6 (2022-10-22) and GPT-5.3-Codex
Claude Sonnet 3.6 (2022-10-22) is made by anthropic while GPT-5.3-Codex is from openai. Claude Sonnet 3.6 (2022-10-22) has a 200K token context window compared to GPT-5.3-Codex's 400K. On pricing, Claude Sonnet 3.6 (2022-10-22) costs $3/M input tokens vs $1.75/M for GPT-5.3-Codex.
Our Verdict
GPT-5.3-Codex
Claude Sonnet 3.6 (2022-10-22)Runner-up
No community votes yet. On paper, GPT-5.3-Codex has the edge — bigger model tier, newer, bigger context window.
Slight edge
Writing DNA
Style Comparison
Similarity
100%
GPT-5.3-Codex uses 15.8x more emoji
Claude Sonnet 3.6 (2022-10-22)
GPT-5.3-Codex
66%Vocabulary65%
74wSentence Length23w
0.72Hedging0.51
0.3Bold6.5
8.9Lists6.2
0.00Emoji0.16
0.06Headings1.90
0.09Transitions0.03
Based on 21 + 23 text responses
vsAsk them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
Model Similarity Index
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
Devstral M / S
95.7%
Qwen3 Coder / Flash
95.6%
GPT-5.4 / Mini
93.3%
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
Free preview13 of 58 slides
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