o3 (Reasoning)
vendorOpenAI · o3 · prices updated June 14, 2026
Input · 1M tokens
$2
Cached input · 1M
$0.5−75%
Output · 1M tokens
$8
Price history
inputoutput
Specifications
Context window200,000
Knowledge cutoffJun 2024
Tokenizertiktoken (o200k_base)
Batch API−50% off the price
Tools
Web SearchCode InterpreterFile SearchImage GenerationMCP
Exact token counts: local tiktoken tokenizer (o200k_base). Tool calls are billed by the provider separately.
About the model
Next-generation reasoning model