← Back to Model Hub/SIDE-BY-SIDE REVIEW
SHARE THIS:

Gemini 3.6 Flash vs GPT-5.2-Codex

Detailed technical comparison between Gemini 3.6 Flash (Google) 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

Gemini 3.6 Flash: 0 WinsvsGPT-5.2-Codex: 6 Wins
Context Leader

Gemini 3.6 Flash

1,048,576 tokens
Agentic Tool-Calling

Tie

Equal Capability
Lowest Latency (TTFT)

Tie

Equal Speed
Input Price Leader

Gemini 3.6 Flash

$1.50 / MTok
Googleactive

Gemini 3.6 Flash

Gemini 3.6 Flash is a high-efficiency model from Google for coding, agentic workflows, and web and app development. It is designed to produce polished outputs with fewer unnecessary edits and...

View Gemini 3.6 Flash 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
SpecificationGemini 3.6 FlashGPT-5.2-Codex
ProviderGoogleOpenAI
Context Window1,048,576 tokens🏆400,000 tokens
Agent SuitabilityN/AN/A
Time to First Token (TTFT)N/AN/A
Deployment Modelmanaged apimanaged api
Production Stabilitybetastable
API AvailableYesYes
Released Date2026-07-212026-01-14

API Pricing Comparison

Input Price per Million Tokens

Gemini 3.6 Flash

$1.50

GPT-5.2-Codex

$1.75

Output Price per Million Tokens

Gemini 3.6 Flash

$7.50

GPT-5.2-Codex

$14.00

💡 Cost Ratio: Gemini 3.6 Flash is 1.2x cheaper per input token than GPT-5.2-Codex.

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.

Open Live Sandbox Playground →

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
73.6%vs93.0%+19.4% GPT-5.2-Codex
Gemini 3.6 Flash
GPT-5.2-Codex 🏆
HumanEvalPython coding & logic synthesis
69.8%vs99.0%+29.2% GPT-5.2-Codex
Gemini 3.6 Flash
GPT-5.2-Codex 🏆
MATHComplex mathematical problem solving
43.0%vs81.4%+38.4% GPT-5.2-Codex
Gemini 3.6 Flash
GPT-5.2-Codex 🏆
GPQAGraduate-level expert reasoning
30.4%vs56.4%+26.0% GPT-5.2-Codex
Gemini 3.6 Flash
GPT-5.2-Codex 🏆
HellaSwagCommonsense reasoning and inference
77.6%vs88.6%+11.0% GPT-5.2-Codex
Gemini 3.6 Flash
GPT-5.2-Codex 🏆
MT-BenchMulti-turn conversation flow quality
8.0%vs9.5%+1.4% GPT-5.2-Codex
Gemini 3.6 Flash
GPT-5.2-Codex 🏆

Gemini 3.6 Flash Quirks & Gotchas

No developer gotchas reported.

GPT-5.2-Codex Quirks & Gotchas

No developer gotchas reported.

Explore Other Popular Comparisons

SIDE-BY-SIDE REVIEW

Gemini 3.6 Flash vs DeepSeek V3.1

Compare context windows, live API token prices, and benchmark scores.

SIDE-BY-SIDE REVIEW

Gemini 3.6 Flash vs Hermes 3 405B Instruct

Compare context windows, live API token prices, and benchmark scores.

SIDE-BY-SIDE REVIEW

Gemini 3.6 Flash vs GPT-4o-mini

Compare context windows, live API token prices, and benchmark scores.

SIDE-BY-SIDE REVIEW

Gemini 3.6 Flash vs Kimi K3

Compare context windows, live API token prices, and benchmark scores.

SIDE-BY-SIDE REVIEW

Gemini 3.6 Flash vs GLM 4.7 Flash

Compare context windows, live API token prices, and benchmark scores.

SIDE-BY-SIDE REVIEW

Gemini 3.6 Flash vs Mistral Medium 3.1

Compare context windows, live API token prices, and benchmark scores.