Claude Sonnet 5.5 vs Gemini 4 Argon: benchmarks and token cost

This comparison uses Claude Sonnet 5.5 (Max, Default Fallback) and Gemini 4 Argon (High). It reports the captured benchmark data, with no new hands-on test.

Sonnet has a higher captured index and lower rate

Sonnet records 54.2 on the captured overall index, compared with Argon’s 50.4. Sonnet’s listed input and output rates are half Argon’s. Argon has a different first-token latency profile, so the practical comparison should include the user’s waiting time as well as token costs. Aggregate score and responsiveness answer different questions.

How to read the table

The intelligence index is an aggregate measurement, not a percentage of correct answers in your application. Input and output prices are separate rates per million tokens. Coding and math indices are unavailable in this capture and must not be read as zero. Compare first-token latency separately from output-token throughput, and use the same model effort settings for a trial. Choose using task quality, total time and the cost of accepted results; provider features and deployment requirements need their own checks.