o3 vs Claude Opus 4.7: token pricing & cost compared (July 2026)

How o3 (OpenAI) and Claude Opus 4.7 (Anthropic) actually compare on price — input, output, and total monthly cost at the MAU you care about. Updated against live OpenRouter pricing.

OpenAI

o3

Input: $2.00 / 1M tokens
Output: $8.00 / 1M tokens
Output / Input ratio: 4.0×
Context window: 200K

Anthropic

Claude Opus 4.7

Input: $5.00 / 1M tokens
Output: $25.00 / 1M tokens
Output / Input ratio: 5.0×
Context window: 1,000K

The short answer

o3 is cheaper across the board for typical workloads.

Token pricing side-by-side

o3
Claude Opus 4.7

Cost at your usage

Avg input tokens / call

Avg output tokens / call

Calls per active user / day: 5

Active days / month: 20

MAU: 1,000

Per call

$0.00500

Per user / mo

$0.5000

Total / mo

$500

Claude Opus 4.7

Per call

$0.01500

Per user / mo

$1.5000

Total / mo

$1,500

o3 is cheaper by $1.0000/user/month — a saving of $1,000/month at 1,000 MAU.

Total monthly bill across MAU

o3
Claude Opus 4.7

Same usage profile applied to both models; only the per-token price differs.

Run this against your real numbers

The mini-calculator above is a preview. Use the full tools to model power-user blast radius, gross margin, and 12-month spend forecasts.

Other comparisons

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Comparing o3 vs Claude Opus 4.7 on price alone never tells the whole story — output-token weighting, context length, and your usage profile change the answer dramatically. Use the calculators below for the full picture.