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

Compare gpt-5.3-codex-spark vs claude-sonnet-5 cheapest routes, input/output prices, shared platforms, cache coverage, and crawl freshness.

Latest crawl: Sep 6, 2026 路 shared platforms: 7

Price verdict

gpt-5.3-codex-spark is about 22% cheaper than claude-sonnet-5 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-5 cheapest

0.36 USD/M tokens

Now Coding

Platform coverage

8/16

Listed platform count for each model.

Cache coverage

100%/100%

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-5

    Anthropic 路 chat

    Cheapest combined route: Now Coding at 0.36 USD/M tokens.

    Lowest input: 0.06 USD/M tokens 路 lowest output: 0.30 USD/M tokens

Shared platform comparison

Platformgpt-5.3-codex-sparkclaude-sonnet-5Lower route
TokenMarket 0.28 USD/M tokens 0.44 USD/M tokens gpt-5.3-codex-spark
Now Coding 0.59 USD/M tokens 0.36 USD/M tokens claude-sonnet-5
Micu 34.84 USD/M tokens 0.79 USD/M tokens claude-sonnet-5
AiYa 5.51 USD/M tokens 3.60 USD/M tokens claude-sonnet-5
ClaudeCN 7.88 USD/M tokens 12.00 USD/M tokens gpt-5.3-codex-spark
DawCode 7.88 USD/M tokens 9.00 USD/M tokens gpt-5.3-codex-spark
Qianduoduo 15.75 USD/M tokens 9.60 USD/M tokens claude-sonnet-5

Continue comparing

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