Claude Opus 5.5 vs Gemini 4 Argon in finance

Every finance benchmark where both have a score (Anthropic and Google). Data refreshed 2 Nov 2026.

Shared benchmarks
5
Claude Opus 5.5 only
1
Gemini 4 Argon only
1

Shared benchmarks, side by side

Each benchmark is drawn on its own scale. Bars are not comparable across rows.

  • Claude Opus 5.5
  • Gemini 4 Argon
  • Ramp Accounting Bench mean reward % (criteria, mean of 3 attempts), higher is better

    Claude Opus 5.5:50.5
    Gemini 4 Argon:61.1 (better)
  • Excel Modeling Benchmark (EMB) accuracy % (v1.1), higher is better

    Claude Opus 5.5:75.8 (better)
    Gemini 4 Argon:74.8
  • Finance Agent Benchmark Partial Credit accuracy % (v2.1), higher is better

    Claude Opus 5.5:67.8 (better)
    Gemini 4 Argon:67.7
  • Vals Finance Index index accuracy %, higher is better

    Claude Opus 5.5:65.6 (better)
    Gemini 4 Argon:64.9
  • Tax Agent Bench accuracy % (all-pass x citation factor), higher is better

    Claude Opus 5.5:45.6 (better)
    Gemini 4 Argon:44.6
Benchmark
Claude Opus 5.5
Gemini 4 Argon

7 benchmarks, 5 scored for both. Bold marks the better score where both have one.

Ramp Accounting Benchmean reward % (criteria, mean of 3 attempts), higher is better
50.5
Ramp Labs Accounting Bench (Official board, 21 Sept 2026)
61.1
Ramp Labs Accounting Bench (Official board, 14 Oct 2026)
Excel Modeling Benchmark (EMB)accuracy % (v1.1), higher is better
75.8
Vals.ai leaderboard (Official board, 29 Oct 2026)
74.8
Vals.ai leaderboard (Official board, 29 Oct 2026)
Finance Agent BenchmarkPartial Credit accuracy % (v2.1), higher is better
67.8
Vals.ai leaderboard (Official board, 29 Oct 2026)
67.7
Vals.ai leaderboard (Official board, 29 Oct 2026)
Vals Finance Indexindex accuracy %, higher is better
65.6
Vals.ai leaderboard (Official board, 29 Oct 2026)
64.9
Vals.ai leaderboard (Official board, 29 Oct 2026)
Tax Agent Benchaccuracy % (all-pass x citation factor), higher is better
45.6
Vals.ai leaderboard (Official board, 29 Oct 2026)
44.6
Vals.ai leaderboard (Official board, 29 Oct 2026)
APEX-AccountingMean Score (% criteria passed), higher is better
Not scored
71.5
Mercor APEX-Accounting leaderboard (Official board, 1 Nov 2026)
FinanceBench% correct, no filing given (150-question sample), higher is better
60.3
Moneda run, 2026-11-02 (Run by Moneda, 2 Nov 2026)
Not scored

Scores from different benchmarks use different scales and are not added up. Settings can differ between sources; see each leaderboard for details.