Claude Opus 5.5 vs Gemini 4 Argon
How does Claude Opus 5.5 (Anthropic) compare against Gemini 4 Argon (Google)? Side-by-side scores, capability ratings and pricing, plus a clear verdict.
🏆 Quick verdict
Claude Opus 5.5 comes out ahead with an AIVerso score of 99 vs 96 and an aggregate capability rating of 667 vs 625 across 7 categories. Gemini 4 Argon still leads on Long Context. Gemini 4 Argon wins on price — lower API price ($2/$10 per 1M tokens (API, intro) vs $4/$20 per 1M).
Overall winner
Claude Opus 5.5
by Anthropic
Score: 99/100
PriceFrom $20/mo (Pro)
Pricing details$4/$20 per 1M
Context window1M
Free tierNo
API accessYes
Open sourceNo
Headline facts#1 on the Artificial Analysis Intelligence Index (58) · SWE-bench Pro 89.9% · OSWorld 2.1 81.8% · $4/$20 per 1M · 1M context
🔗 Try Claude Opus 5.5 →
Full Claude Opus 5.5 profile →
Gemini 4 Argon
by Google
Score: 96/100
Price$2/$10 per 1M tokens (API, intro)
Pricing detailsAPI then $4/$20 per 1M · Gemini app on paid Google plans
Context window1M
Free tierNo
API accessYes
Open sourceNo
Headline factsGoogle's new flagship · DeepSWE 77.9% (vendor-reported) · AA Intelligence Index ~53 · 1M context
Try Gemini 4 Argon →
Full Gemini 4 Argon profile → 🔗 Affiliate link — we may earn a commission if you sign up, at no extra cost to you.
📊 Capability ratings
AIVerso capability ratings (0–100) per category — an editorial summary informed by public benchmark results. Higher is better.
Category
Claude Opus 5.5
Gemini 4 Argon
Math & Logice.g. AIME, MATH-500
96
92
Programminge.g. SWE-bench, LiveCodeBench
96
81
Reasoninge.g. GPQA, ARC
96
94
Knowledgee.g. MMLU-Pro
92
90
Long Contexte.g. MRCR, needle tests
95
96
Instruction Followinge.g. IFEval
95
93
Agent Capabilitye.g. Terminal-Bench, tool use
97
79
Why Claude Opus 5.5
Higher overall score (99 vs 96)
Leads on Math & Logic (96 vs 92)
Leads on Programming (96 vs 81)
Leads on Reasoning (96 vs 94)
Leads on Knowledge (92 vs 90)
Leads on Instruction Following (95 vs 93)
Leads on Agent Capability (97 vs 79)
Why Gemini 4 Argon
Lower API price ($2/$10 per 1M tokens (API, intro) vs $4/$20 per 1M)
Leads on Long Context (96 vs 95)
Google's new flagship
DeepSWE 77.9% (vendor-reported)
Open this comparison in the live tool →
❓ Frequently Asked Questions
Which is better: Claude Opus 5.5 or Gemini 4 Argon?
Claude Opus 5.5 has the higher AIVerso score (99 vs 96). The better choice still depends on your use case — Gemini 4 Argon leads on Long Context.
How much does Claude Opus 5.5 cost compared to Gemini 4 Argon?
Claude Opus 5.5: From $20/mo (Pro) ($4/$20 per 1M). Gemini 4 Argon: $2/$10 per 1M tokens (API, intro) (API then $4/$20 per 1M · Gemini app on paid Google plans). Neither has a free tier.
What context window does each support?
Claude Opus 5.5: 1M tokens. Gemini 4 Argon: 1M tokens. The context window determines how much text, code or chat history a model can process at once.
Are Claude Opus 5.5 and Gemini 4 Argon open source?
Claude Opus 5.5 is a closed, proprietary model. Gemini 4 Argon is a closed, proprietary model.
How we compare: Scores and capability ratings are based on public benchmarks and provider documentation — not on commission rates. Last updated: October 14, 2026.