Is Claude 3 Haiku or GPT-5.3 Codex cheaper?

Claude 3 Haiku is cheaper on output tokens ($1.25 vs $14.00 per 1M).

Which has the larger context window, Claude 3 Haiku or GPT-5.3 Codex?

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

Claude 3 Haiku vs GPT-5.3 Codex

Claude 3 Haiku is cheaper on output tokens, while GPT-5.3 Codex offers a larger context window. Choose Claude 3 Haiku or GPT-5.3 Codex based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Claude 3 Haiku	GPT-5.3 Codex
Provider	OpenRouter	OpenRouter
Input / 1M tokens	$0.25	$1.75
Output / 1M tokens	$1.25	$14.00
Context window	200K	400K
Parameters	—	—
Open weights	No	No
Released	Mar 2024	Feb 2026

Claude 3 Haiku details →GPT-5.3 Codex details →

FAQ

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