Is GPT-4o or Claude Opus 4.5 cheaper?

GPT-4o is cheaper on output tokens ($12.50 vs $30.00 per 1M).

Which has the larger context window, GPT-4o or Claude Opus 4.5?

Claude Opus 4.5 has the larger context window (198K tokens).

GPT-4o vs Claude Opus 4.5

GPT-4o is cheaper on output tokens, while Claude Opus 4.5 offers a larger context window. Choose GPT-4o or Claude Opus 4.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT-4o	Claude Opus 4.5
Provider	Venice AI	Venice AI
Input / 1M tokens	$3.13	$6.00
Output / 1M tokens	$12.50	$30.00
Context window	128K	198K
Parameters	—	—
Open weights	No	No
Released	Feb 2026	Dec 2025

GPT-4o details →Claude Opus 4.5 details →

FAQ

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