LLM Pricing

← All Models

OpenAI: GPT-5.1-Codex-Mini

🇺🇸 OpenAI · GPT-5.1-Codex-Mini

Input Price $0.250 per million tokens NT$8.0
Output Price $2.00 per million tokens NT$64.0
Context Window 400K tokens Output limit: 100K
OpenRouter Route Price Please verify with official pricing pages
Use this model via OpenRouter →

Overview

OpenAI: GPT-5.1-Codex-Mini is a large language model API from OpenAI, part of its GPT-5.1-Codex-Mini model family. Priced at $0.250 per million input tokens and $2.00 per million output tokens, it occupies the mid-range, balancing capability against running cost. Output tokens cost about 8× as much as input, so prompt-heavy workloads run noticeably cheaper than generation-heavy ones. A large 400K-token context window (≈600 pages of text) lets it take in whole books, large codebases, or lengthy transcripts in a single call. Beyond plain text it also accepts Image input, so it can be applied to multimodal tasks rather than text alone. On Artificial Analysis's Intelligence Index it scores 31 (C grade), a useful proxy for its general reasoning strength relative to the other models tracked here. All prices on this page reflect OpenRouter's routed rates and are re-synced automatically every day; confirm against the provider's official pricing before committing to production.

Dimension Unit Price (USD) Price (TWD) Effective From
Input per 1M tokens $0.250 NT$8.0
Output per 1M tokens $2.00 NT$64.0
Cached Input per 1M tokens $0.025 NT$0.80
Web Search per search $0.010 NT$0.32

Provider
OpenAI
Model Family
GPT-5.1-Codex-Mini
Version String
openai/gpt-5.1-codex-mini
Status
Active
Modality
Image, Text
Context Window
400,000 tokens
Output Limit
100,000 tokens

Index Metrics

Cross-domain capability indexes evaluated by Artificial Analysis — Artificial Analysis

Intelligence Index 31 C Measured: 2026-07-01

Benchmark Scores

Data source: Artificial Analysis

AA-LCR 62.7% B Measured: 2026-07-01
GPQA Diamond 81.3% A Measured: 2026-07-01
HLE 16.9% B Measured: 2026-07-01
MMMU Pro 69.0% B Measured: 2026-07-01
Non-Hallucination 49.2% Measured: 2026-07-01
Omniscience Accuracy 22.7% Measured: 2026-07-01
SciCode 42.6% B Measured: 2026-07-01
Tau2 62.9% Measured: 2026-07-01
TerminalBench 33.3% Measured: 2026-07-01

Performance Metrics

Real-world benchmarks, updated every 72 hours by Artificial Analysis — Artificial Analysis

First Token Latency 7.6s Measured: 2026-07-01
Output Speed 213 t/s Measured: 2026-07-01
Response Time 10.0s Measured: 2026-07-01

90-Day Price Trend

Input / Output price (USD per 1M tokens)

Past 90 days of records; every price change is shown here

Date Dimension Price (USD) Source
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter

Key Insights

Key data points from this page for quick reference and citation.

  • OpenAI: GPT-5.1-Codex-Mini Input price: $0.25/M tokens
  • OpenAI: GPT-5.1-Codex-Mini Output price: $2/M tokens
  • Context window: 400,000 tokens
  • Provider: OpenAI
  • Model family: GPT-5.1-Codex-Mini
  • Modalities: Image, Text
  • Data source: OpenRouter, updated daily