GPT-5.3 Codex API Pricing Calculator

Track gpt-5.3-codex pricing with real-time alerts, compare providers, and monitor cost changes across next-generation autonomous coding workflows.

Released 5 February 2026, GPT-5.3 Codex is now a legacy coding model from OpenAI. It is due to be replaced by GPT-6 Sol on 1 April 2027. The context window holds 400,000 tokens, with up to 128,000 returned per response. It costs between $1.75 and $3.50 per million input tokens, depending on service tier.

Last updated Oct 3, 2026

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Model Details

Released
Feb 5, 2026
Status
Legacysunset Apr 01, 2027
Context Length
400,000
Max Output
128,000
Superseded By
GPT-6 Sol

Where is GPT-5.3 Codex a perfect fit?

gpt-5.3-codex is built for full lifecycle software execution, not just code generation - it behaves more like a teammate than a tool. Ideal for:
- Long-running autonomous coding agents working over hours or days
- Full software lifecycle tasks: coding, debugging, deployment, monitoring
- Building complete applications (web apps, games, systems) end-to-end
- Multi-step workflows involving research, tool use, and execution
- Developer productivity acceleration across large codebases
- Professional knowledge work beyond coding (docs, analysis, reports)

Quick Model Estimate

(USD 1.7500 per 1M tokens)
(USD 14.0000 per 1M tokens)

Your GPT-5.3 Codex Cost Estimate

💰 Total Cost

—

for 1000 input + 1000 output tokens

📥 Input (1000 × $1.750000) —
📤 Output (1000 × $14.000000) —

Cost Breakdown

📥 Input 📤 Output

Prices are watched for changes and checked against the provider's own page.

Pricing

Provider ↕
Modality ↕
Service Tier ↕
Input Price
(per 1M tokens) ↕
Output Price
(per 1M tokens) ↕
Cached Input
(per 1M tokens) ↕
Context Size ↕
View
OpenAI LogoOpenAITextStandard$1.7500$14.0000$0.1750400,000 tokens→
OpenAI LogoOpenAITextPriority$3.5000$28.0000$0.3500400,000 tokens→

Recent changes

When GPT-5.3 Codex was newly listed on a provider, moved to legacy or deprecated, or retired.

  1. Legacy

    OpenAI moved GPT-5.3 Codex to legacy, retiring it on 1st Apr 2027, with GPT-6 Sol as the suggested replacement.

See all changes, new releases and retirements →

Other Models in the GPT-5.3 Family

GPT-5.3 Chat Latest

Deprecated

Multimodal · 400,000 context

FAQs about GPT-5.3 Codex

How much does GPT-5.3 Codex cost per 1M tokens?

GPT-5.3 Codex costs between $1.75 and $3.50 per million input tokens, and between $14.00 and $28.00 per million output tokens. The range covers Standard and Priority pricing.

What does a typical workload cost with GPT-5.3 Codex?

1,000 requests of 2,000 input and 500 output tokens each — 2,000,000 input and 500,000 output tokens in total — costs $10.50 with GPT-5.3 Codex at its lowest rates. Use the calculator on this page for your own volumes.

Where can I use GPT-5.3 Codex?

GPT-5.3 Codex is available through OpenAI, from $1.75 per million input tokens.

What is GPT-5.3 Codex's context window?

GPT-5.3 Codex has a context window of 400,000 tokens, and returns up to 128,000 tokens in a single response.

Is GPT-5.3 Codex still available?

GPT-5.3 Codex is a legacy model and is scheduled for retirement on 1 April 2027. The replacement is GPT-6 Sol.