AI Tool Profile
GPT-5.3-Codex
OpenAI introduced GPT-5.3-Codex, describing it as a more capable agentic coding model for Codex, long-running tasks, and broader professional computer work.
Before you buy
Best for: Teams using Codex for autonomous coding, debugging, testing, analysis, documentation, and multi-step software workflows.
Price: USD API: US$1.75 input / US$14 output per 1M tokens
Included: gpt-5.3-codex API usage at Standard rates; ChatGPT/Codex subscriptions are separate.
Main limits: The exact model is deprecated in the current catalog. Check its cutoff before new work; Fast mode, tool use and regional processing have different rates.
What Kingy showed: Related coverage: Best AI Coding Tools for Non-Developers in 2026: An Honest Guide. This review does not treat that article as a new test of this exact model, plan or current release.
Buying details checked 2026-10-23 with region and currency stated above. Historical demonstrations and the broader fact ledger keep their own dates.
Check official plans · See the demonstration and disclosure · Compare these workflows
Coverage describes this profile, not a product score or a current price guarantee.
Verification & Sources
- Evidence state
- Recheck due
- Source links
- 3
- Freshness
- Needs recheck: checked June 8, 2026
- Last updated
- October 23, 2026
What this evidence state means
- Definition
- The claim was previously checked, but its review window expired or a material change may have invalidated it.
- Required provenance
- The prior evidence and check date are retained, together with the expiry or change signal that triggered recheck.
- Owner
- Kingy freshness queue owner and assigned editorial reviewer
- Freshness rule
- This is already outside its freshness rule. It must not be presented as current until reviewed against current evidence.
- Disputes and corrections
- Use “Suggest a correction” on the record. Kingy editorial reviews the cited evidence, records material corrections, and changes or removes the state when it is not supported.
Key source checks
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Who should consider it
Teams using Codex for autonomous coding, debugging, testing, analysis, documentation, and multi-step software workflows. OpenAI introduced GPT-5.3-Codex, describing it as a more capable agentic coding model for Codex, long-running tasks, and broader professional computer work.
Plan, price and billing scope
USD API: US$1.75 input / US$14 output per 1M tokens. gpt-5.3-codex API usage at Standard rates; ChatGPT/Codex subscriptions are separate. Prices use the currency and billing term stated here. Where a numeric rate, region or current entitlement could not be verified, it remains explicit; no checkout was completed.
Limits that affect the decision
The exact model is deprecated in the current catalog. Check its cutoff before new work; Fast mode, tool use and regional processing have different rates.
What the existing evidence shows
Related coverage: Best AI Coding Tools for Non-Developers in 2026: An Honest Guide. This review does not treat that article as a new test of this exact model, plan or current release. Related workflow reading; not a demonstration of this exact product. Read the related article. Open the previously linked demo.
Sources and buying-review date
Buying review completed October 23, 2026. This is a source-based buying assessment. No paid product test, new generation, checkout or performance benchmark was performed. Vendor descriptions and historical examples remain distinct from independently measured results. The date does not renew the broader canonical fact ledger.
- Official source: developers.openai.com
- Official source: openai.com
- Official source: chatgpt.com
- Related Kingy coverage
Check the official offer · Compare related options
Earlier profile, sources and dates
This older record retains its original scope. Current buying qualifications above take precedence where terms have changed.
OpenAI introduced GPT-5.3-Codex, describing it as a more capable agentic coding model for Codex, long-running tasks, and broader professional computer work.
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Alternatives
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Launch History
OpenAI launches GPT-5.3-Codex for frontier agentic coding work
OpenAI introduced GPT-5.3-Codex, describing it as a more capable agentic coding model for Codex, long-running tasks, and broader professional computer work.
A major agentic coding model release because OpenAI positioned it as moving Codex from code generation toward broader computer work.