LLM API PricesUpdated 2026-08-28 05:27:58 UTC

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GPT 5.1 Codex Mini API price

openai/gpt-5.1-codex-mini

The cheapest GPT 5.1 Codex Mini API is $0.25/M input at OpenRouter (aggregator) - all 2 providers compared below, per 1M tokens.

SmallOpenAI400K context2 sellers
Input $0.25 per 1M tokens · OpenRouter (aggregator)
Output $2.00 per 1M tokens · OpenRouter (aggregator)

Where to buy it

Cheapest GPT 5.1 Codex Mini API providers compared - 2 sellers, from $0.25/M.

ProviderInput $/MOutput $/MCached in
OpenRouter (aggregator)0.250cheapest2.000.030
OrcaRouter (aggregator)0.2502.00-

Against its tier

#14 of 18 small · cheaper than 24%

Details

Context window
400K400,000 tokens
Developer
OpenAI
Intelligence
31.3high
Sellers
2
Cached input
$0.03where the source publishes one
Cheapest at
OpenRouter (aggregator)
Combined
$2.25in + out per 1M
Last checked
2026-08-28

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