gpt-5.3-codex vs gemini-3.1-pro-preview API price comparison

Compare gpt-5.3-codex vs gemini-3.1-pro-preview cheapest routes, input/output prices, shared platforms, cache coverage, and crawl freshness.

Latest crawl: Sep 6, 2026 路 shared platforms: 8

Price verdict

gpt-5.3-codex is about 59% cheaper than gemini-3.1-pro-preview on the cheapest listed combined route, making it the first cost-sensitive option to inspect.

gpt-5.3-codex cheapest

0.81 USD/M tokens

Micu

gemini-3.1-pro-preview cheapest

1.98 USD/M tokens

AICodeMirror

Platform coverage

11/13

Listed platform count for each model.

Cache coverage

82%/77%

Share of routes that publish cache read or write prices.

Model snapshots

  • gpt-5.3-codex

    OpenAI 路 coding

    Cheapest combined route: Micu at 0.81 USD/M tokens.

    Lowest input: 0.09 USD/M tokens 路 lowest output: 0.72 USD/M tokens

  • gemini-3.1-pro-preview

    Google 路 chat

    Cheapest combined route: AICodeMirror at 1.98 USD/M tokens.

    Lowest input: 0.30 USD/M tokens 路 lowest output: 1.62 USD/M tokens

Shared platform comparison

Platformgpt-5.3-codexgemini-3.1-pro-previewLower route
Micu 0.81 USD/M tokens 4.54 USD/M tokens gpt-5.3-codex
Yunwu 9.45 USD/M tokens 14.00 USD/M tokens gpt-5.3-codex
AIHubMix 15.75 USD/M tokens 14.00 USD/M tokens gemini-3.1-pro-preview
Atlas Cloud 15.75 USD/M tokens 14.00 USD/M tokens gemini-3.1-pro-preview
DMXAPI 39.09 USD/M tokens 14.00 USD/M tokens gemini-3.1-pro-preview
Qianduoduo 15.75 USD/M tokens 375.00 USD/M tokens gpt-5.3-codex
DawCode 31.50 USD/M tokens 28.00 USD/M tokens gemini-3.1-pro-preview
PackyCode 78.75 USD/M tokens 42.00 USD/M tokens gemini-3.1-pro-preview

Continue comparing

gpt-5.3-codex 路 gemini-3.1-pro-preview 路 ratio ranking