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GPT-5.3-Codex vs o3

o3 在 3 / 8 個類別領先

Arena ELO

o3

價格較低

GPT-5.3-Codex

速度較快

o3

詳細比較

類別GPT-5.3-Codexo3
ProviderOpenAI OpenAI
Context Window128K 200K 勝出
Input Price ($/1M)$1.75 勝出$10
Output Price ($/1M)$14 勝出$40
Arena ELON/A 1422 勝出
CodingN/A unknown
ReasoningN/A unknown
Speed (tokens/sec)N/A ~30 t/s 勝出
Open SourceNo No

常見問題

Which is cheaper, GPT-5.3-Codex or o3?

GPT-5.3-Codex is approximately 69% cheaper than o3 per million tokens.

Which is better for coding, GPT-5.3-Codex or o3?

GPT-5.3-Codex scores N/A on coding benchmarks, while o3 scores unknown.

Which has a larger context window?

GPT-5.3-Codex supports 128K context, while o3 supports 200K.

Is GPT-5.3-Codex or o3 open source?

GPT-5.3-Codex is proprietary. o3 is proprietary.