Is GPT-5.3 Codex or Claude 3.5 Sonnet cheaper?

GPT-5.3 Codex is cheaper on output tokens ($14.00 vs $15.00 per 1M).

Which has the larger context window, GPT-5.3 Codex or Claude 3.5 Sonnet?

GPT-5.3 Codex has the larger context window (400K tokens).

GPT-5.3 Codex vs Claude 3.5 Sonnet

GPT-5.3 Codex is cheaper on output tokens, while GPT-5.3 Codex offers a larger context window. Choose GPT-5.3 Codex or Claude 3.5 Sonnet based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT-5.3 Codex	Claude 3.5 Sonnet
Provider	DigitalOcean	DigitalOcean
Input / 1M tokens	$1.75	$3.00
Output / 1M tokens	$14.00	$15.00
Context window	400K	200K
Parameters	—	—
Open weights	No	No
Released	Feb 2026	Jun 2024

GPT-5.3 Codex details →Claude 3.5 Sonnet details →

FAQ

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.