gpt-5.3-codex-spark vs claude-sonnet-4-5-20250929 API price comparison

Compare gpt-5.3-codex-spark vs claude-sonnet-4-5-20250929 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 58% cheaper than claude-sonnet-4-5-20250929 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

claude-sonnet-4-5-20250929 cheapest

0.66 USD/M tokens

Xcode Best

Platform coverage

8/12

Listed platform count for each model.

Cache coverage

100%/83%

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

  • claude-sonnet-4-5-20250929

    Anthropic 路 chat

    Cheapest combined route: Xcode Best at 0.66 USD/M tokens.

    Lowest input: 0.11 USD/M tokens 路 lowest output: 0.55 USD/M tokens

Shared platform comparison

Platformgpt-5.3-codex-sparkclaude-sonnet-4-5-20250929Lower route
Xcode Best 0.71 USD/M tokens 0.66 USD/M tokens claude-sonnet-4-5-20250929
Micu 34.84 USD/M tokens 1.20 USD/M tokens claude-sonnet-4-5-20250929
ClaudeCN 7.88 USD/M tokens 18.00 USD/M tokens gpt-5.3-codex-spark
Qianduoduo 15.75 USD/M tokens 14.40 USD/M tokens claude-sonnet-4-5-20250929

Continue comparing

gpt-5.3-codex-spark 路 claude-sonnet-4-5-20250929 路 ratio ranking