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Claude Sonnet 4.5 vs Gemini 4 Argon

Gemini 4 Argon leads the LLM Stats Score 55.4 to 32.0.

Anthropic · Google · Updated for 2026

Which is better?

Gemini 4 Argon leads the overall LLM Stats Score 55.4 to 32.0, ranking #4 overall.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Claude Sonnet 4.5

  • you want predictable pricing at $3.00/M input and $15.00/M output

Choose Gemini 4 Argon

  • overall performance matters — it scores 55.4 and ranks #4 on LLM Stats
  • your work emphasizes reasoning and agents — it leads those capability indexes
  • you want the most recent training data — it shipped Sep 2026

At a glance

The differences that matter most.

Claude Sonnet 4.5
Anthropic
Gemini 4 Argon
Google
Core performance indexes
LLM Stats Score
32.0
#121
55.4
#4
Reasoning
31.2
#123
53.3
#6
Coding
20.9
#103
43.0
#7
Agents
17.2
#89
40.9
#4
Cost, coverage & limits
Benchmark wins
—
—
Input price
$3.00 / M
— / M
Output price
$15.00 / M
— / M
Context window
200,000
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

3 shared
Index
Claude Sonnet 4.5
Gemini 4 Argon
Vision
10.6#129
36.8#8
Tool use
26.1#30
31.8#5
Multimodal
12.5#118
37.0#8
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

9 reported for Claude Sonnet 4.5 · 19 for Gemini 4 Argon

No common benchmarks found

Claude Sonnet 4.5 and Gemini 4 Argondon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Claude Sonnet 4.5 specifies input context (200,000 tokens). Only Claude Sonnet 4.5 specifies output context (64,000 tokens).

Anthropic
Claude Sonnet 4.5
Input200,000 tokens
Output64,000 tokens
Google
Gemini 4 Argon
Input- tokens
Output- tokens
Wed Oct 14 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Sonnet 4.5 and Gemini 4 Argon support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Claude Sonnet 4.5

Text
Images
Audio
Video

Gemini 4 Argon

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Claude Sonnet 4.5

Proprietary

Closed source

Gemini 4 Argon

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Sonnet 4.5 was released on 2025-09-29, while Gemini 4 Argon was released on 2026-09-30.

Gemini 4 Argon is 12 months newer than Claude Sonnet 4.5.

Claude Sonnet 4.5

Sep 29, 2025

1.0 years ago

Gemini 4 Argon

Sep 30, 2026

1 weeks ago

1.0yr newer

Knowledge Cutoff

When training data ends

Claude Sonnet 4.5 has a documented knowledge cutoff of 2025-01-31, while Gemini 4 Argon's cutoff date is not specified.

We can confirm Claude Sonnet 4.5's training data extends to 2025-01-31, but cannot make a direct comparison without Gemini 4 Argon's cutoff date.

Claude Sonnet 4.5

Jan 2025

Gemini 4 Argon

—

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Claude Sonnet 4.5 and Gemini 4 Argon side-by-side, then vote on the output you prefer.

Claude Sonnet 4.5
✓ Preferred
Gemini 4 Argon
Open in Playground

FAQ

Common questions about Claude Sonnet 4.5 vs Gemini 4 Argon.

Which is better, Claude Sonnet 4.5 or Gemini 4 Argon?

Gemini 4 Argon leads the LLM Stats Score 55.4 to 32.0. Claude Sonnet 4.5 is made by Anthropic and Gemini 4 Argon is made by Google. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Claude Sonnet 4.5 compare to Gemini 4 Argon in benchmarks?

Claude Sonnet 4.5 scores MMMLU: 89.1%, AIME 2025: 87.0%, TAU-bench Retail: 86.2%, GPQA: 83.4%, MMMUval: 77.8%. Gemini 4 Argon scores Graphwalks BFS <128k: 99.7%, Vibe Code Bench: 91.9%, LVBench: 91.7%, LABBench2: 88.8%, Graphwalks BFS >128k: 84.2%.

What are the context window sizes for Claude Sonnet 4.5 and Gemini 4 Argon?

Claude Sonnet 4.5 supports 200K tokens and Gemini 4 Argon supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Sonnet 4.5 and Gemini 4 Argon?

Key differences include LLM Stats Score (32.0 vs 55.4). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Sonnet 4.5 and Gemini 4 Argon?

Claude Sonnet 4.5 is developed by Anthropic and Gemini 4 Argon is developed by Google.

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