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Gemini 4 Argon vs GPT-5.5

Gemini 4 Argon leads the LLM Stats Score 55.1 to 47.2.

Google · OpenAI · Updated for 2026

Which is better?

Gemini 4 Argon leads the overall LLM Stats Score 55.1 to 47.2, ranking #4 overall.

In the 2 individual benchmarks reported for both models, Gemini 4 Argon wins 2; this is a narrower head-to-head signal than the composite indexes.

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

Choose Gemini 4 Argon

  • overall performance matters — it scores 55.1 and ranks #4 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 2 of 2 exact shared results
  • you want the most recent training data — it shipped Sep 2026

Choose GPT-5.5

  • you want predictable pricing at $5.00/M input and $30.00/M output

At a glance

The differences that matter most.

Gemini 4 Argon
Google
GPT-5.5
OpenAI
Core performance indexes
LLM Stats Score
55.1
#4
47.2
#31
Reasoning
52.4
#7
46.8
#30
Coding
44.1
#4
36.0
#25
Agents
40.5
#4
31.2
#35
Cost, coverage & limits
Benchmark wins
2 of 2
0 of 2
Input price
— / M
$5.00 / M
Output price
— / M
$30.00 / M
Context window
—
1,050,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

4 shared
Index
Gemini 4 Argon
GPT-5.5
Vision
36.8#8
35.1#13
Tool use
30.6#6
26.9#27
Long context
30.6#3
20.9#27
Multimodal
36.9#8
32.4#23
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

19 reported for Gemini 4 Argon · 28 for GPT-5.5

2 shared

Gemini 4 Argon outperforms in 2 benchmarks (DeepSWE 1.1, Graphwalks BFS >128k), while GPT-5.5 is better at 0 benchmarks.

Gemini 4 Argon significantly outperforms across most benchmarks.

Thu Oct 08 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only GPT-5.5 specifies input context (1,050,000 tokens). Only GPT-5.5 specifies output context (128,000 tokens).

Google
Gemini 4 Argon
Input- tokens
Output- tokens
OpenAI
GPT-5.5
Input1,050,000 tokens
Output128,000 tokens
Thu Oct 08 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Gemini 4 Argon and GPT-5.5 support multimodal inputs.

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

Gemini 4 Argon

Text
Images
Audio
Video

GPT-5.5

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.

Gemini 4 Argon

Proprietary

Closed source

GPT-5.5

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 4 Argon was released on 2026-09-30, while GPT-5.5 was released on 2026-04-23.

Gemini 4 Argon is 5 months newer than GPT-5.5.

Gemini 4 Argon

Sep 30, 2026

1 weeks ago

5mo newer
GPT-5.5

Apr 23, 2026

5 months ago

Knowledge Cutoff

When training data ends

GPT-5.5 has a documented knowledge cutoff of 2025-12-01, while Gemini 4 Argon's cutoff date is not specified.

We can confirm GPT-5.5's training data extends to 2025-12-01, but cannot make a direct comparison without Gemini 4 Argon's cutoff date.

Gemini 4 Argon

—

GPT-5.5

Dec 2025

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Gemini 4 Argon and GPT-5.5 side-by-side, then vote on the output you prefer.

Gemini 4 Argon
✓ Preferred
GPT-5.5
Open in Playground

FAQ

Common questions about Gemini 4 Argon vs GPT-5.5.

Which is better, Gemini 4 Argon or GPT-5.5?

Gemini 4 Argon leads the LLM Stats Score 55.1 to 47.2. Gemini 4 Argon is made by Google and GPT-5.5 is made by OpenAI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Gemini 4 Argon compare to GPT-5.5 in benchmarks?

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%. GPT-5.5 scores Tau2 Telecom: 98.0%, ARC-AGI: 95.0%, GPQA: 93.6%, ARC-AGI v2: 85.0%, GDPval-MM: 84.9%.

What are the context window sizes for Gemini 4 Argon and GPT-5.5?

Gemini 4 Argon supports an unknown number of tokens and GPT-5.5 supports 1.1M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 4 Argon and GPT-5.5?

Key differences include LLM Stats Score (55.1 vs 47.2). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 4 Argon and GPT-5.5?

Gemini 4 Argon is developed by Google and GPT-5.5 is developed by OpenAI.

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