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GPT-6.1 Terra vs Grok Voice 3.0

Comparing GPT-6.1 Terra and Grok Voice 3.0 across benchmarks, pricing, and capabilities.

OpenAI · xAI · Updated for 2026

Which is better?

GPT-6.1 Terra and Grok Voice 3.0 trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.

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

Choose GPT-6.1 Terra

  • you want the most recent training data — it shipped Oct 2026

Choose Grok Voice 3.0

  • you are already invested in the xAI ecosystem

At a glance

The differences that matter most.

GPT-6.1 Terra
OpenAI
Grok Voice 3.0
xAI
Benchmark wins
—
—
Input price
$1.00 / M
— / M
Output price
$5.00 / M
— / M
Context window
1,050,000
—

Individual benchmarks

9 reported for GPT-6.1 Terra · 1 for Grok Voice 3.0

No common benchmarks found

GPT-6.1 Terra and Grok Voice 3.0don'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).

OpenAI
GPT-6.1 Terra
Input1,050,000 tokens
Output128,000 tokens
xAI
Grok Voice 3.0
Input- tokens
Output- tokens
Fri Nov 06 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both GPT-6.1 Terra and Grok Voice 3.0 support multimodal inputs.

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

GPT-6.1 Terra

Text
Images
Audio
Video

Grok Voice 3.0

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.

GPT-6.1 Terra

Proprietary

Closed source

Grok Voice 3.0

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-6.1 Terra was released on 2026-10-26, while Grok Voice 3.0 was released on 2026-10-14.

GPT-6.1 Terra is 0 month newer than Grok Voice 3.0.

GPT-6.1 Terra

Oct 26, 2026

1 weeks ago

1w newer
Grok Voice 3.0

Oct 14, 2026

3 weeks ago

Knowledge Cutoff

When training data ends

GPT-6.1 Terra has a documented knowledge cutoff of 2026-06-01, while Grok Voice 3.0'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 Grok Voice 3.0's cutoff date.

GPT-6.1 Terra

Jun 2026

Grok Voice 3.0

—

Provider Availability

GPT-6.1 Terra is available from OpenAI. Grok Voice 3.0 is available from xAI.

GPT-6.1 Terra

openai logo
OpenAI
Input Price:Input: $1.00/1MOutput Price:Output: $5.00/1M

Grok Voice 3.0

xai logo
xAI
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against GPT-6.1 Terra and Grok Voice 3.0 side-by-side, then vote on the output you prefer.

GPT-6.1 Terra
✓ Preferred
Grok Voice 3.0
Open in Playground

FAQ

Common questions about GPT-6.1 Terra vs Grok Voice 3.0.

Which is better, GPT-6.1 Terra or Grok Voice 3.0?

GPT-6.1 Terra (OpenAI) and Grok Voice 3.0 (xAI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does GPT-6.1 Terra compare to Grok Voice 3.0 in benchmarks?

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%. Grok Voice 3.0 scores Big Bench Audio: 98.5%.

What are the context window sizes for GPT-6.1 Terra and Grok Voice 3.0?

GPT-6.1 Terra supports 1.1M tokens and Grok Voice 3.0 supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

Who makes GPT-6.1 Terra and Grok Voice 3.0?

GPT-6.1 Terra is developed by OpenAI and Grok Voice 3.0 is developed by xAI.

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