OpenAI Codex MinivsGemini 2.5 Flash Preview 05-20
Gemini 2.5 Flash Preview 05-20 is cheaper than OpenAI Codex Mini at $0.15/M vs $1.5/M input tokens.
| Spec | OpenAI Codex Mini | Gemini 2.5 Flash Preview 05-20 |
|---|---|---|
| Input price | $1.5/M tokens | $0.15/M tokens |
| Output price | $6/M tokens | $0.6/M tokens |
| Context window | 200K tokens | 1.0M tokens |
| Parameters | Not disclosed | Not disclosed |
| Free API (OpenRouter) | No | No |
| Released | May 2025 | May 2025 |
Our Verdict
OpenAI Codex Mini
Gemini 2.5 Flash Preview 05-20
Not enough votes to call it. On the specs, nothing separates them.
Gemini 2.5 Flash Preview 05-20 costs 10x less per token.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
OpenAI Codex Mini
Input
$1.50
Output
$6.00
Gemini 2.5 Flash Preview 05-20
Input
$0.15
10× cheaper
Output
$0.60
10× cheaper
Gemini 2.5 Flash Preview 05-20 is cheaper on both: 10× input, 10× output.
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