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Specifications
Context window
—1.05M
API pricing
Input price
—$10.00
Output price
—$50.00
Cached input price
—$1.00
Cheapest input
—$5.00OpenAI
Cheapest output
—$25.00OpenAI

These models have no shared benchmark scores.

Overview
CompanyOpenAIOpenAI
Release dateNov 7 2025Sep 3 2026
AccessClosedClosed
Model detailsView modelView model

Frequently asked questions

GPT-5-Codex-Mini and GPT-6 Astra don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Only GPT-6 Astra has a verified first-party API price: $10.00 per million input tokens and $50.00 per million output tokens. No pay-as-you-go API rate is tracked for GPT-5-Codex-Mini. GPT-5-Codex-Mini shipped 300 days before GPT-6 Astra, so benchmark comparisons should account for the intervening progress.

Published specifications for these two models are limited — see each model page for the latest details.

Direct benchmark comparisons are unavailable — GPT-5-Codex-Mini and GPT-6 Astra don't publish scores on any of the same benchmarks.