OpenAI: GPT-5.3-Codex
OpenAI: GPT-5.3-Codex is a text model from Openai, with a 400K-token context window, priced at $1.75 in · $14.00 out / 1M. On Fully Informed you can add OpenAI: GPT-5.3-Codex to a multi-model panel, where it answers independently, debates the other models and gets cross-checked for blind spots.
Vendor OpenaiType Text400K contextPrice $1.75 in · $14.00 out / 1M
Put OpenAI: GPT-5.3-Codex on the panel →
GPT-5.3-Codex is OpenAI’s most advanced agentic coding model, combining the frontier software engineering performance of GPT-5.2-Codex with the broader reasoning and professional knowledge capabilities of GPT-5.2. It achieves state-of-the-art results...
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- What is OpenAI: GPT-5.3-Codex?
- GPT-5.3-Codex is OpenAI’s most advanced agentic coding model, combining the frontier software engineering performance of GPT-5.2-Codex with the broader reasoning and professional knowledge capabilities of GPT-5.2. It achieves state-of-the-art results...
- What is the context window of OpenAI: GPT-5.3-Codex?
- OpenAI: GPT-5.3-Codex supports a 400K-token context window.
- How much does OpenAI: GPT-5.3-Codex cost?
- OpenAI: GPT-5.3-Codex is priced at $1.75 in · $14.00 out / 1M via OpenRouter.
- What are alternatives to OpenAI: GPT-5.3-Codex?
- Comparable text models include OpenAI: GPT-3.5 Turbo, OpenAI: GPT-3.5 Turbo (older v0613), Anthropic: Claude Fable Latest, Anthropic Claude Haiku Latest.
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