Compare GPT-5.3-Codex by OpenAI against PaLM 2 Chat by Google AI, context windows of 400K vs 8K, tested across 20 shared challenges. Updated April 2026.
GPT-5.3-Codex and PaLM 2 Chat are both competitive models. GPT-5.3-Codex costs $1.75/M input tokens vs $0.5/M for PaLM 2 Chat. Context windows: 400K vs 8K tokens. Compare their real outputs side by side below.
GPT-5.3-Codex is made by openai while PaLM 2 Chat is from google. GPT-5.3-Codex has a 400K token context window compared to PaLM 2 Chat's 8K. On pricing, GPT-5.3-Codex costs $1.75/M input tokens vs $0.5/M for PaLM 2 Chat.
No community votes yet. On paper, GPT-5.3-Codex has the edge — bigger model tier, newer, bigger context window.
PaLM 2 Chat is 28x cheaper per token — worth considering if cost matters.
GPT-5.3-Codex uses 15.8x more emoji
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-5.3-Codex by OpenAI against PaLM 2 Chat by Google AI, context windows of 400K vs 8K, tested across 20 shared challenges. Updated April 2026.
GPT-5.3-Codex and PaLM 2 Chat are both competitive models. GPT-5.3-Codex costs $1.75/M input tokens vs $0.5/M for PaLM 2 Chat. Context windows: 400K vs 8K tokens. Compare their real outputs side by side below.
GPT-5.3-Codex is made by openai while PaLM 2 Chat is from google. GPT-5.3-Codex has a 400K token context window compared to PaLM 2 Chat's 8K. On pricing, GPT-5.3-Codex costs $1.75/M input tokens vs $0.5/M for PaLM 2 Chat.
No community votes yet. On paper, GPT-5.3-Codex has the edge — bigger model tier, newer, bigger context window.
PaLM 2 Chat is 28x cheaper per token — worth considering if cost matters.
GPT-5.3-Codex uses 15.8x more emoji
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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8+ 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