Claude Opus 4.8 vs Claude Sonnet 4.6
How Claude Opus 4.8 (Anthropic) and Claude Sonnet 4.6 (Anthropic) compare on price and capabilities — and how to use either on anyAInow without a subscription.
Claude Opus 4.8
Flagship
Claude Sonnet 4.6
Balanced
Provider
Anthropic
Anthropic
Best for
Flagship
Balanced
Reads images
Yes
Yes
GPQA Diamond
92%
87.5%
AA Coding Index
74.3%
63%
Price
from $30 / 1M
from $30 / 1M
Subscription
None
None
Benchmark source: artificialanalysis.ai, as of 13 Aug 2026. Higher is better; figures are publisher-reported where not independently verified.
Claude Opus 4.8 or Claude Sonnet 4.6?
Claude Opus 4.8 is a flagship-tier model, while Claude Sonnet 4.6 is balanced-tier. On the GPQA Diamond reasoning benchmark, Claude Opus 4.8 leads 92% to 87.5%. On anyAInow you can use either — or run both side by side to see which answers your prompts better — pay-as-you-go with no subscription.