GPT-5.3-Codex vs Amazon Nova 2 Lite
Compare GPT-5.3-Codex by OpenAI against Amazon Nova 2 Lite by Amazon, context windows of 400K vs 1.0M, tested across 34 shared challenges. Updated April 2026.
Which is better, GPT-5.3-Codex or Amazon Nova 2 Lite?
GPT-5.3-Codex and Amazon Nova 2 Lite are both competitive models. GPT-5.3-Codex costs $1.75/M input tokens vs $0.5/M for Amazon Nova 2 Lite. Context windows: 400K vs 1000K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5.3-Codex and Amazon Nova 2 Lite
GPT-5.3-Codex is made by openai while Amazon Nova 2 Lite is from amazon. GPT-5.3-Codex has a 400K token context window compared to Amazon Nova 2 Lite's 1000K. On pricing, GPT-5.3-Codex costs $1.75/M input tokens vs $0.5/M for Amazon Nova 2 Lite.
No community votes yet. On paper, GPT-5.3-Codex has the edge — bigger model tier, newer, major provider backing.
Amazon Nova 2 Lite is 9.3x cheaper per token — worth considering if cost matters.
Style Comparison
Amazon Nova 2 Lite uses 4.2x more transitions
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279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
