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GPT-5 Image Mini vs GPT-5.2-Codex

Detailed technical comparison between GPT-5 Image Mini (OpenAI) and GPT-5.2-Codex (OpenAI). Review live API token pricing, context window capabilities, time-to-first-token latency, and verified benchmark scores side-by-side.

⚡ Executive Summary & Verdict

Comparison Snapshot

GPT-5 Image Mini: 2 WinsvsGPT-5.2-Codex: 4 Wins
Context Leader

Tie

Equal Capacity
Agentic Tool-Calling

Tie

Equal Capability
Lowest Latency (TTFT)

Tie

Equal Speed
Input Price Leader

GPT-5.2-Codex

$1.75 / MTok
OpenAIactive

GPT-5 Image Mini

GPT-5 Image Mini combines OpenAI's advanced language capabilities, powered by [GPT-5 Mini](https://openrouter.ai/openai/gpt-5-mini), with GPT Image 1 Mini for efficient image generation. This natively multimodal model features superior instruction following, text...

View GPT-5 Image Mini Full Specs →
OpenAIactive

GPT-5.2-Codex

GPT-5.2-Codex is an upgraded version of GPT-5.1-Codex optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....

View GPT-5.2-Codex Full Specs →

Technical Specifications

🏆 = Superior Spec
SpecificationGPT-5 Image MiniGPT-5.2-Codex
ProviderOpenAIOpenAI
Context Window400,000 tokens400,000 tokens
Agent SuitabilityNot yet benchmarkedNot yet benchmarked
Time to First Token (TTFT)No public TTFT dataNo public TTFT data
Deployment Modelmanaged apimanaged api
Production StabilityStable GA (est.)Stable GA (est.)
API AvailableYesYes
Released Date2025-10-162026-01-14

API Pricing Comparison

Input Price per Million Tokens

GPT-5 Image Mini

$2.50

GPT-5.2-Codex

$1.75

Output Price per Million Tokens

GPT-5 Image Mini

$2.00

GPT-5.2-Codex

$14.00

💡 Cost Ratio: GPT-5.2-Codex is 1.4x cheaper per input token than GPT-5 Image Mini.

Want to test both models live?

Run side-by-side prompt benchmarks in our dynamic multi-model Sandbox. Compare execution speeds, latency metrics, and compute actual costs in real-time.

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Benchmark Performance Metrics

Standardized Scores (0–100%)

Scores show verified raw accuracy percentages across standardized AI evaluation suites. Higher bars indicate superior performance in that domain.

MMLUGeneral knowledge & multi-task understanding
90.8%vs93.0%+2.2% GPT-5.2-Codex
GPT-5 Image Mini
GPT-5.2-Codex 🏆
HumanEvalPython coding & logic synthesis
92.0%vs99.0%+7.0% GPT-5.2-Codex
GPT-5 Image Mini
GPT-5.2-Codex 🏆
MATHComplex mathematical problem solving
79.2%vs81.4%+2.2% GPT-5.2-Codex
GPT-5 Image Mini
GPT-5.2-Codex 🏆
GPQAGraduate-level expert reasoning
57.6%vs56.4%+1.2% GPT-5 Image Mini
GPT-5 Image Mini 🏆
GPT-5.2-Codex
HellaSwagCommonsense reasoning and inference
89.8%vs88.6%+1.2% GPT-5 Image Mini
GPT-5 Image Mini 🏆
GPT-5.2-Codex
MT-BenchMulti-turn conversation flow quality
9.2%vs9.5%+0.2% GPT-5.2-Codex
GPT-5 Image Mini
GPT-5.2-Codex 🏆

GPT-5 Image Mini Quirks & Gotchas

No developer gotchas reported.

GPT-5.2-Codex Quirks & Gotchas

No developer gotchas reported.

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