Gemini 3 Flash vs GPT 5.4 Mini

Direct comparison between google and openai for chat models. Specs, prices, strengths, weaknesses — decide on facts.

At a glance

  • · Cheaper: Gemini 3 Flash
  • · Longer context window: Gemini 3 Flash at 1,000,000 tokens
  • · Gemini 3 Flash: 1M token context at mini-tier pricing
  • · GPT 5.4 Mini: Fraction of GPT-5.4 cost with very similar tool-use quality

Spec comparison

SpecGemini 3 FlashGPT 5.4 Mini
Providergoogleopenai
Input per 1M tokens$0.50 / 1M$0.75 / 1M
Output per 1M tokens$3.00 / 1M$4.50 / 1M
Context window1,000,000 tok400,000 tok
Max output65,536 tok16,384 tok
Knowledge cutoff2025-112026-01
Vision
Audio
Tool calling
JSON mode
Structured output

Gemini 3 Flash — strengths

  • +1M token context at mini-tier pricing
  • +Very low latency, ideal for realtime
  • +Multimodal: image, audio, and video input

GPT 5.4 Mini — strengths

  • +Fraction of GPT-5.4 cost with very similar tool-use quality
  • +Low latency — good for realtime chat and inline completion
  • +Same 400k context window as the full-size model

Gemini 3 Flash — weaknesses

  • Code quality clearly below Sonnet 4.6 and GPT-5.4-mini
  • Complex reasoning chains fail sooner than on Pro

GPT 5.4 Mini — weaknesses

  • No dedicated reasoning mode — complex math degrades
  • On very long tool-call chains, drift detection is weaker
Details: Gemini 3 FlashDetails: GPT 5.4 Mini