Is Anthropic: Claude Opus 4.6 or OpenAI: GPT-5 Pro cheaper?

Anthropic: Claude Opus 4.6 is cheaper on output tokens ($25.00 vs $120.00 per 1M).

Which has the larger context window, Anthropic: Claude Opus 4.6 or OpenAI: GPT-5 Pro?

Anthropic: Claude Opus 4.6 has the larger context window (1M tokens).

Anthropic: Claude Opus 4.6 vs OpenAI: GPT-5 Pro

Anthropic: Claude Opus 4.6 is cheaper on output tokens, while Anthropic: Claude Opus 4.6 offers a larger context window. Choose Anthropic: Claude Opus 4.6 or OpenAI: GPT-5 Pro based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Anthropic: Claude Opus 4.6	OpenAI: GPT-5 Pro
Provider	Kilo Gateway	Kilo Gateway
Input / 1M tokens	$5.00	$15.00
Output / 1M tokens	$25.00	$120.00
Context window	1M	400K
Parameters	—	—
Open weights	No	No
Released	Feb 2026	Oct 2025

Anthropic: Claude Opus 4.6 details →OpenAI: GPT-5 Pro details →

FAQ

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