Is Microsoft: Phi 4 or Anthropic: Claude Opus 4.5 cheaper?

Microsoft: Phi 4 is cheaper on output tokens ($0.14 vs $25.00 per 1M).

Which has the larger context window, Microsoft: Phi 4 or Anthropic: Claude Opus 4.5?

Anthropic: Claude Opus 4.5 has the larger context window (200K tokens).

Microsoft: Phi 4 vs Anthropic: Claude Opus 4.5

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

Spec	Microsoft: Phi 4	Anthropic: Claude Opus 4.5
Provider	Kilo Gateway	Kilo Gateway
Input / 1M tokens	$0.06	$5.00
Output / 1M tokens	$0.14	$25.00
Context window	16K	200K
Parameters	—	—
Open weights	Yes	No
Released	Dec 2024	Nov 2025

Microsoft: Phi 4 details →Anthropic: 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.