The AI arena is free today

Open Superagent

Gemini Diffusion vs GPT-6.1 Terra

GPT-6.1 Terra leads the LLM Stats Score 47.5 to 0.2.

Google · OpenAI · Updated for 2026

Which is better?

GPT-6.1 Terra leads the overall LLM Stats Score 47.5 to 0.2, ranking #36 overall.

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

Choose Gemini Diffusion

  • you are already invested in the Google ecosystem

Choose GPT-6.1 Terra

  • overall performance matters — it scores 47.5 and ranks #36 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you want the most recent training data — it shipped Oct 2026

At a glance

The differences that matter most.

Gemini Diffusion
Google
GPT-6.1 Terra
OpenAI
Core performance indexes
LLM Stats Score
0.2
#360
47.5
#36
Reasoning
0.2
#352
49.0
#19
Coding
2.5
#256
37.1
#30
Cost, coverage & limits
Benchmark wins
—
—
Input price
— / M
$1.00 / M
Output price
— / M
$5.00 / M
Context window
—
1,050,000

Individual benchmarks

10 reported for Gemini Diffusion · 8 for GPT-6.1 Terra

No common benchmarks found

Gemini Diffusion and GPT-6.1 Terradon'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 GPT-6.1 Terra specifies input context (1,050,000 tokens). Only GPT-6.1 Terra specifies output context (128,000 tokens).

Google
Gemini Diffusion
Input- tokens
Output- tokens
OpenAI
GPT-6.1 Terra
Input1,050,000 tokens
Output128,000 tokens
Sat Oct 31 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

GPT-6.1 Terra supports multimodal inputs, whereas Gemini Diffusion does not.

GPT-6.1 Terra can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemini Diffusion

Text
Images
Audio
Video

GPT-6.1 Terra

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 Diffusion

Proprietary

Closed source

GPT-6.1 Terra

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini Diffusion was released on 2025-05-20, while GPT-6.1 Terra was released on 2026-10-26.

GPT-6.1 Terra is 17 months newer than Gemini Diffusion.

Gemini Diffusion

May 20, 2025

1.4 years ago

GPT-6.1 Terra

Oct 26, 2026

4 days ago

1.4yr newer

Knowledge Cutoff

When training data ends

GPT-6.1 Terra has a documented knowledge cutoff of 2026-06-01, while Gemini Diffusion's cutoff date is not specified.

We can confirm GPT-6.1 Terra's training data extends to 2026-06-01, but cannot make a direct comparison without Gemini Diffusion's cutoff date.

Gemini Diffusion

—

GPT-6.1 Terra

Jun 2026

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Gemini Diffusion and GPT-6.1 Terra side-by-side, then vote on the output you prefer.

Gemini Diffusion
✓ Preferred
GPT-6.1 Terra
Open in Playground

FAQ

Common questions about Gemini Diffusion vs GPT-6.1 Terra.

Which is better, Gemini Diffusion or GPT-6.1 Terra?

GPT-6.1 Terra leads the LLM Stats Score 47.5 to 0.2. Gemini Diffusion is made by Google and GPT-6.1 Terra 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 Diffusion compare to GPT-6.1 Terra in benchmarks?

Gemini Diffusion scores HumanEval: 89.6%, MBPP: 76.0%, Global-MMLU-Lite: 69.1%, LBPP (v2): 56.8%, BigCodeBench: 45.4%. GPT-6.1 Terra scores HealthBench Consensus: 95.1%, HealthBench Professional: 62.7%, Agents' Last Exam: 60.0%, Terminal-Bench-Science 0.1: 58.3%, MentalHealthBench: 55.5%.

What are the context window sizes for Gemini Diffusion and GPT-6.1 Terra?

Gemini Diffusion supports an unknown number of tokens and GPT-6.1 Terra 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 Diffusion and GPT-6.1 Terra?

Key differences include LLM Stats Score (0.2 vs 47.5), multimodal support (no vs yes). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini Diffusion and GPT-6.1 Terra?

Gemini Diffusion is developed by Google and GPT-6.1 Terra is developed by OpenAI.

Related comparisons