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Gemini 4 Carbon vs GPT-6.1 Terra

Gemini 4 Carbon leads the LLM Stats Score 59.0 to 47.5.

Google · OpenAI · Updated for 2026

Which is better?

Gemini 4 Carbon leads the overall LLM Stats Score 59.0 to 47.5, ranking #2 overall.

In the 1 individual benchmarks reported for both models, Gemini 4 Carbon wins 1; 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 Carbon

  • overall performance matters — it scores 59.0 and ranks #2 on LLM Stats
  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results
  • you want the most recent training data — it shipped Oct 2026

Choose GPT-6.1 Terra

  • you want predictable pricing at $1.00/M input and $5.00/M output

At a glance

The differences that matter most.

Gemini 4 Carbon
Google
GPT-6.1 Terra
OpenAI
Core performance indexes
LLM Stats Score
59.0
#2
47.5
#36
Reasoning
54.9
#5
49.0
#19
Coding
48.1
#3
37.1
#30
Agents
46.0
#2
38.8
#12
Cost, coverage & limits
Benchmark wins
1 of 1
0 of 1
Input price
— / M
$1.00 / M
Output price
— / M
$5.00 / M
Context window
—
1,050,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Gemini 4 Carbon
GPT-6.1 Terra
Tool use
35.8#3
33.3#5
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

16 reported for Gemini 4 Carbon · 8 for GPT-6.1 Terra

1 shared

Gemini 4 Carbon outperforms in 1 benchmarks (Terminal-Bench-Science 0.1), while GPT-6.1 Terra is better at 0 benchmarks.

Gemini 4 Carbon significantly outperforms across most benchmarks.

Thu Oct 29 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-6.1 Terra specifies input context (1,050,000 tokens). Only GPT-6.1 Terra specifies output context (128,000 tokens).

Google
Gemini 4 Carbon
Input- tokens
Output- tokens
OpenAI
GPT-6.1 Terra
Input1,050,000 tokens
Output128,000 tokens
Thu Oct 29 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Gemini 4 Carbon and GPT-6.1 Terra support multimodal inputs.

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

Gemini 4 Carbon

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 4 Carbon

Proprietary

Closed source

GPT-6.1 Terra

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 4 Carbon was released on 2026-10-28, while GPT-6.1 Terra was released on 2026-10-26.

Gemini 4 Carbon is 0 month newer than GPT-6.1 Terra.

Gemini 4 Carbon

Oct 28, 2026

-2 days ago

2d newer
GPT-6.1 Terra

Oct 26, 2026

0 days ago

Knowledge Cutoff

When training data ends

GPT-6.1 Terra has a documented knowledge cutoff of 2026-06-01, while Gemini 4 Carbon'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 4 Carbon's cutoff date.

Gemini 4 Carbon

—

GPT-6.1 Terra

Jun 2026

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Gemini 4 Carbon and GPT-6.1 Terra side-by-side, then vote on the output you prefer.

Gemini 4 Carbon
✓ Preferred
GPT-6.1 Terra
Open in Playground

FAQ

Common questions about Gemini 4 Carbon vs GPT-6.1 Terra.

Which is better, Gemini 4 Carbon or GPT-6.1 Terra?

Gemini 4 Carbon leads the LLM Stats Score 59.0 to 47.5. Gemini 4 Carbon 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 4 Carbon compare to GPT-6.1 Terra in benchmarks?

Gemini 4 Carbon scores Gray Swan IPI Benchmark: 100.0%, Vending-Bench 2: 100.0%, Graphwalks BFS >128k: 96.2%, WebDev Arena: 88.4%, SEC-bench Pro: 88.2%. 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 4 Carbon and GPT-6.1 Terra?

Gemini 4 Carbon 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 4 Carbon and GPT-6.1 Terra?

Key differences include LLM Stats Score (59.0 vs 47.5). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 4 Carbon and GPT-6.1 Terra?

Gemini 4 Carbon is developed by Google and GPT-6.1 Terra is developed by OpenAI.

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