Is Claude-Haiku-3 or GPT-5.1-Codex cheaper?

Claude-Haiku-3 is cheaper on output tokens ($1.10 vs $9.00 per 1M).

Which has the larger context window, Claude-Haiku-3 or GPT-5.1-Codex?

GPT-5.1-Codex has the larger context window (400K tokens).

Claude-Haiku-3 vs GPT-5.1-Codex

Claude-Haiku-3 is cheaper on output tokens, while GPT-5.1-Codex offers a larger context window. Choose Claude-Haiku-3 or GPT-5.1-Codex based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Claude-Haiku-3	GPT-5.1-Codex
Provider	Poe	Poe
Input / 1M tokens	$0.21	$1.10
Output / 1M tokens	$1.10	$9.00
Context window	189K	400K
Parameters	—	—
Open weights	No	No
Released	Mar 2024	Nov 2025

Claude-Haiku-3 details →GPT-5.1-Codex details →

FAQ

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