Context Window
400,000
Tokens
Model Cost Profile
OpenAI: GPT-5.3-Codex
Developer: openai
Pricing updated Mar 16, 2026
Input rank: #277Output rank: #314
OpenAI's GPT-5.3-Codex is designed for advanced coding tasks, making it ideal for software development teams that require high-quality code generation and debugging assistance. With a substantial context window of 400,000 tokens, it enables developers to manage complex projects and maintain code context over extended interactions. The pricing structure, at $1.75 for every million input tokens and $14.00 for output tokens, allows teams to budget effectively based on their usage patterns and project demands.
👁 Vision🔧 Tool Calling🔌 MCP Compatible📋 Structured Output🧠 Reasoning
Input Price / 1M
$1.75
Prompt tokens
Output Price / 1M
$14.00
Completion tokens
Top Benchmark
Pending
No benchmark data yet
Quality & Benchmarks
Evaluation scores for OpenAI: GPT-5.3-Codex. The “Top Benchmark” shown above is the highest-priority score available (MMLU > GPQA > MATH > HumanEval).
🔧
Tool Calling Supported🔌 MCP Compatible
Price History
OpenAI: GPT-5.3-Codex Pricing Trend
Input / 1M tokens0.0%Output / 1M tokens0.0%
Mar 7 — Mar 16
Current Input / 1M
$1.75
Current Output / 1M
$14.00
Performance History
OpenAI: GPT-5.3-Codex Speed Trend
Not enough data yet. Performance tracking started recently — check back in a few days.
Side-by-Side Pricing Table
| Usage Type | Price / 1M Tokens |
|---|---|
| Input (Prompt) | $1.75 |
| Output (Completion) | $14.00 |
| Cache Read | $0.1750 |
Cost Calculator
Estimate monthly spend for OpenAI: GPT-5.3-Codex based on your workload.
01.0B
0500M
Estimated Monthly Cost
$212
25M input + 12M output tokens
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