Head-to-head AI model comparison graphic: Claude Opus 5.5 (Anthropic) vs Gemini 4 Argon (Google). Intelligence index 59.1 vs 50.4; output speed 96 vs 92 tokens per second; time to first token 12.8 min vs 52s; output price $20.00 vs $20.00 per million tokens; input price $4.00 vs $4.00 per million tokens. franklineh.com
Claude Opus 5.5 vs Gemini 4 Argon: head-to-head AI benchmark comparison. Claude Opus 5.5 leads on intelligence index and output speed; Gemini 4 Argon leads on time to first token; level on output price and input price.
Head to headBy Franklin AIUpdated

Claude Opus 5.5 (Max, Default Fallback) vs Gemini 4 Argon (High) benchmark comparison

Claude Opus 5.5 (Max, Default Fallback) vs Gemini 4 Argon (High) scores 59.1 and 50.4 on the captured intelligence index. Compare token rates and response timing.

Pick it for Claude Opus 5.5 · Max, Default Fallback

  • Test Opus on long output and quality-sensitive requests.

Pick it for Gemini 4 Argon · High

  • Measure Argon’s initial response on interactive requests.

By the numbers

These figures describe the two model configurations shown here. A dash means the source snapshot had no usable figure for that metric. Scores, speed and API pricing may change as providers update models.

MetricClaude Opus 5.5 (Max, Default Fallback)Gemini 4 Argon (High)
Intelligence Index59.150.4
Input price (per 1M tokens)$4.00$4.00
Output price (per 1M tokens)$20.00$20.00
Output speed (tokens/s)9692
Time to first token12.8 min52s
Release date2026-09-222026-09-30

The current benchmark capture reports aggregate intelligence indices of 59.1 for Claude Opus 5.5 (Max, Default Fallback) and 50.4 for Gemini 4 Argon (High).

Matched rates with a large first-token gap

Opus and Argon list $4 input and $20 output per million tokens. Opus has the higher index and slightly faster output generation, while Argon has the earlier first token.

What to measure on your workload

If the application streams responses, measure when the first useful content arrives. For an offline job, compare total completion time and acceptance rate. Equal token prices make these other differences easier to isolate.

Questions about Claude Opus 5.5 and Gemini 4 Argon

How long does each variant take to start responding?

The captured time to first token is 765.8 seconds for Claude Opus 5.5 (Max, Default Fallback) and 51.56 seconds for Gemini 4 Argon (High).

What is the measured output speed?

Captured output throughput is 96.49 tokens per second for Claude Opus 5.5 (Max, Default Fallback) and 91.55 tokens per second for Gemini 4 Argon (High).

What release dates does the benchmark record list?

The recorded release dates are 2026-09-22 for Claude Opus 5.5 (Max, Default Fallback) and 2026-09-30 for Gemini 4 Argon (High).

Final whistle

Opus and Argon list $4 input and $20 output per million tokens. Opus has the higher index and slightly faster output generation, while Argon has the earlier first token.

Where the numbers come from

The scores, speed and prices in this comparison come from independent third-party model evaluations that Franklin AI syncs each day, and the article was written from a snapshot of them. For the latest results, open the Claude Opus 5.5 (Max, Default Fallback) and Gemini 4 Argon (High) pages. The AI Benchmark methodology explains how that data is collected and shown.

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