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

Compare gpt-5.3-codex-spark 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: 4

Price verdict

gpt-5.3-codex-spark is about 86% 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-spark cheapest

0.28 USD/M tokens

TokenMarket

gemini-3.1-pro-preview cheapest

1.98 USD/M tokens

AICodeMirror

Platform coverage

8/13

Listed platform count for each model.

Cache coverage

100%/77%

Share of routes that publish cache read or write prices.

Model snapshots

  • gpt-5.3-codex-spark

    OpenAI 路 coding

    Cheapest combined route: TokenMarket at 0.28 USD/M tokens.

    Lowest input: 0.03 USD/M tokens 路 lowest output: 0.25 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-codex-sparkgemini-3.1-pro-previewLower route
Xcode Best 0.71 USD/M tokens 2.09 USD/M tokens gpt-5.3-codex-spark
Micu 34.84 USD/M tokens 4.54 USD/M tokens gemini-3.1-pro-preview
DawCode 7.88 USD/M tokens 28.00 USD/M tokens gpt-5.3-codex-spark
Qianduoduo 15.75 USD/M tokens 375.00 USD/M tokens gpt-5.3-codex-spark

Continue comparing

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