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GPT-6 Cyber vs Grok-4 Fast Non-Reasoning

Comparing GPT-6 Cyber and Grok-4 Fast Non-Reasoning across benchmarks, pricing, and capabilities.

OpenAI · xAI · Updated for 2026

Which is better?

GPT-6 Cyber and Grok-4 Fast Non-Reasoning trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.

On price, Grok-4 Fast Non-Reasoning is roughly 145.5x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Grok-4 Fast Non-Reasoning also accepts a larger context window (2,000,000 input tokens), making it the stronger choice for long documents and large codebases.

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

Choose GPT-6 Cyber

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

Choose Grok-4 Fast Non-Reasoning

  • cost matters — it's about 145.5x cheaper per token
  • you process long inputs — it offers a 2,000,000 token context window

At a glance

The differences that matter most.

GPT-6 Cyber
OpenAI
Grok-4 Fast Non-Reasoning
xAI
Benchmark wins
—
—
Input price
$20.00 / M
$0.20 / M
Output price
$100.00 / M
$0.50 / M
Context window
1,050,000
2,000,000

Individual benchmarks

1 reported for GPT-6 Cyber · 0 for Grok-4 Fast Non-Reasoning

No common benchmarks found

GPT-6 Cyber and Grok-4 Fast Non-Reasoningdon'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

Pricing Analysis

Price comparison per million tokens

Grok-4 Fast Non-Reasoning costs less

For input processing, GPT-6 Cyber ($20.00/1M tokens) is 100.0x more expensive than Grok-4 Fast Non-Reasoning ($0.20/1M tokens).

For output processing, GPT-6 Cyber ($100.00/1M tokens) is 200.0x more expensive than Grok-4 Fast Non-Reasoning ($0.50/1M tokens).

In conclusion, GPT-6 Cyber is more expensive than Grok-4 Fast Non-Reasoning.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Mon Nov 09 2026 • llm-stats.com
OpenAI
GPT-6 Cyber
Input tokens$20.00
Output tokens$100.00
Best providerOpenAI
xAI
Grok-4 Fast Non-Reasoning
Input tokens$0.20
Output tokens$0.50
Best providerxAI
Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

Grok-4 Fast Non-Reasoning accepts 2,000,000 input tokens compared to GPT-6 Cyber's 1,050,000 tokens. GPT-6 Cyber can generate longer responses up to 128,000 tokens, while Grok-4 Fast Non-Reasoning is limited to 30,000 tokens.

OpenAI
GPT-6 Cyber
Input1,050,000 tokens
Output128,000 tokens
xAI
Grok-4 Fast Non-Reasoning
Input2,000,000 tokens
Output30,000 tokens
Mon Nov 09 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both GPT-6 Cyber and Grok-4 Fast Non-Reasoning support multimodal inputs.

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

GPT-6 Cyber

Text
Images
Audio
Video

Grok-4 Fast Non-Reasoning

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 Cyber

Proprietary

Closed source

Grok-4 Fast Non-Reasoning

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-6 Cyber was released on 2026-11-05, while Grok-4 Fast Non-Reasoning was released on 2025-08-28.

GPT-6 Cyber is 14 months newer than Grok-4 Fast Non-Reasoning.

GPT-6 Cyber

Nov 5, 2026

4 days ago

1.2yr newer
Grok-4 Fast Non-Reasoning

Aug 28, 2025

1.2 years ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

GPT-6 Cyber is available from OpenAI. Grok-4 Fast Non-Reasoning is available from xAI.

GPT-6 Cyber

openai logo
OpenAI
Input Price:Input: $20.00/1MOutput Price:Output: $100.00/1M

Grok-4 Fast Non-Reasoning

xai logo
xAI
Input Price:Input: $0.20/1MOutput Price:Output: $0.50/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against GPT-6 Cyber and Grok-4 Fast Non-Reasoning side-by-side, then vote on the output you prefer.

GPT-6 Cyber
✓ Preferred
Grok-4 Fast Non-Reasoning
Open in Playground

FAQ

Common questions about GPT-6 Cyber vs Grok-4 Fast Non-Reasoning.

Which is better, GPT-6 Cyber or Grok-4 Fast Non-Reasoning?

GPT-6 Cyber (OpenAI) and Grok-4 Fast Non-Reasoning (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 Cyber compare to Grok-4 Fast Non-Reasoning in benchmarks?

GPT-6 Cyber scores ExploitGym: 48.5%.

Is GPT-6 Cyber cheaper than Grok-4 Fast Non-Reasoning?

Grok-4 Fast Non-Reasoning is 100.0x cheaper for input tokens. GPT-6 Cyber costs $20.00/M input and $100.00/M output via openai. Grok-4 Fast Non-Reasoning costs $0.20/M input and $0.50/M output via xai.

What are the context window sizes for GPT-6 Cyber and Grok-4 Fast Non-Reasoning?

GPT-6 Cyber supports 1.1M tokens and Grok-4 Fast Non-Reasoning supports 2.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GPT-6 Cyber and Grok-4 Fast Non-Reasoning?

Key differences include context window (1.1M vs 2.0M), input pricing ($20.00 vs $0.20/M). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-6 Cyber and Grok-4 Fast Non-Reasoning?

GPT-6 Cyber is developed by OpenAI and Grok-4 Fast Non-Reasoning is developed by xAI.

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