Gemini 4 Carbon (High) vs Claude Opus 5.5 (Xhigh, Default Fallback)Benchmark Comparison 2026

Objective comparison based on public benchmarks updated weekly: Intelligence Index, Chatbot Arena ELO, pricing and speed.

Overall winner (2026)

Gemini 4 Carbon (High)

2 of 2 criteria won

Google

Gemini 4 Carbon (High)

Winner

Intelligence Index

59.4

2 criteria won

View full profile →

Anthropic

Claude Opus 5.5 (Xhigh, Default Fallback)

Intelligence Index

57.0

0 criteria won

View full profile →

Detailed Comparison

CritérioGemini 4 Carbon (High)Claude Opus 5.5 (Xhigh, Default Fallback)
Chatbot Arena ELO——
Intelligence Index (AA)59.4 ✓57.0
Coding Index (AA)——
Input price ($/1M tok)$4.00$4.00
Output price ($/1M tok)$20.00$20.00
Context window——
Speed (tokens/s)92 tok/s ✓85 tok/s

✓ = winner in this criterion • Source: Artificial Analysis, LMArena, official APIs • Updated weekly

Technical Specifications

Gemini 4 Carbon (High)

Company
Google
Input ($/1M tok)
$4.00
Output ($/1M tok)
$20.00
Speed
92 tok/s
Release
Oct 2026
Multimodal
No
Open Source
No

Claude Opus 5.5 (Xhigh, Default Fallback)

Company
Anthropic
Input ($/1M tok)
$4.00
Output ($/1M tok)
$20.00
Speed
85 tok/s
Release
Sep 2026
Multimodal
No
Open Source
No

When to use Gemini 4 Carbon (High) vs Claude Opus 5.5 (Xhigh, Default Fallback)?

Choosing between Gemini 4 Carbon (High) and Claude Opus 5.5 (Xhigh, Default Fallback) depends on your use case, budget and technical requirements. Below, a practical guide based on benchmark data and each model's specifications.

Use Gemini 4 Carbon (High) when:

Google · Text

  • →API integration in SaaS applications — direct API access with documented SLA
View full Gemini 4 Carbon (High) profile →

Use Claude Opus 5.5 (Xhigh, Default Fallback) when:

Anthropic · Text

  • →API integration in SaaS applications — direct API access with documented SLA
View full Claude Opus 5.5 (Xhigh, Default Fallback) profile →
SWEN Verdict: Gemini 4 Carbon (High) wins in more objective criteria in this comparison (2 vs 0). For most use cases, Gemini 4 Carbon (High) offers better aggregate performance — but Claude Opus 5.5 (Xhigh, Default Fallback) may be preferable if your project prioritizes api integration in saas applications.

Frequently Asked Questions

Gemini 4 Carbon (High) or Claude Opus 5.5 (Xhigh, Default Fallback): which is better?

Gemini 4 Carbon (High) wins in 2 of 2 criteria analyzed. Check the full table to choose based on your use case.

Where does this benchmark data come from?

Data is aggregated from Artificial Analysis (Intelligence Index, Coding Index) and Chatbot Arena/LMArena (ELO). Pricing and specs come from official APIs. Updated weekly.

What is the Intelligence Index?

The Intelligence Index is an aggregate score from Artificial Analysis that combines multiple academic benchmarks (MMLU, GPQA, LiveBench, etc.) into a single rating. The higher the score, the more capable the model is at reasoning tasks.

Is Gemini 4 Carbon (High) cheaper than Claude Opus 5.5 (Xhigh, Default Fallback)?

Gemini 4 Carbon (High) and Claude Opus 5.5 (Xhigh, Default Fallback) have the same input price: $4/1M tokens. The actual cost difference depends on output pricing and your application's input/output ratio.

Gemini 4 Carbon (High) or Claude Opus 5.5 (Xhigh, Default Fallback): which has a larger context window?

Context window data is not available for either model at this time.

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