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GPT-5.6 Terra vs GPT-6 Cyber

GPT-5.6 Terra and GPT-6 Cyber are closely matched at 48.5 and 40.8 on the LLM Stats Score. GPT-5.6 Terra is 8.9x cheaper per token.

OpenAI · OpenAI · Updated for 2026

Which is better?

GPT-5.6 Terra and GPT-6 Cyber are closely matched on the overall LLM Stats Score at 48.5 and 40.8.

In the 1 individual benchmarks reported for both models, GPT-6 Cyber wins 1; this is a narrower head-to-head signal than the composite indexes.

On price, GPT-5.6 Terra is roughly 8.9x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

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

Choose GPT-5.6 Terra

  • cost matters — it's about 8.9x cheaper per token

Choose GPT-6 Cyber

  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results
  • you want the most recent training data — it shipped Nov 2026

At a glance

The differences that matter most.

GPT-5.6 Terra
OpenAI
GPT-6 Cyber
OpenAI
Core performance indexes
LLM Stats Score
48.5
#31
40.8
#82
Coding
37.0
#27
32.7
#47
Agents
34.2
#31
30.5
#49
Cost, coverage & limits
Benchmark wins
0 of 1
1 of 1
Input price
$2.00 / M
$20.00 / M
Output price
$12.00 / M
$100.00 / M
Context window
1,050,000
1,050,000

Individual benchmarks

46 reported for GPT-5.6 Terra · 1 for GPT-6 Cyber

1 shared

GPT-5.6 Terra outperforms in 0 benchmarks, while GPT-6 Cyber is better at 1 benchmark (ExploitGym).

GPT-6 Cyber significantly outperforms across most benchmarks.

Thu Nov 12 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

GPT-5.6 Terra costs less

For input processing, GPT-5.6 Terra ($2.00/1M tokens) is 10.0x cheaper than GPT-6 Cyber ($20.00/1M tokens).

For output processing, GPT-5.6 Terra ($12.00/1M tokens) is 8.3x cheaper than GPT-6 Cyber ($100.00/1M tokens).

In conclusion, GPT-6 Cyber is more expensive than GPT-5.6 Terra.*

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

Lowest available price from all providers
Thu Nov 12 2026 • llm-stats.com
OpenAI
GPT-5.6 Terra
Input tokens$2.00
Output tokens$12.00
Best providerOpenAI
OpenAI
GPT-6 Cyber
Input tokens$20.00
Output tokens$100.00
Best providerOpenAI
Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

Both models have the same input context window of 1,050,000 tokens. Both models can generate responses up to 128,000 tokens.

OpenAI
GPT-5.6 Terra
Input1,050,000 tokens
Output128,000 tokens
OpenAI
GPT-6 Cyber
Input1,050,000 tokens
Output128,000 tokens
Thu Nov 12 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both GPT-5.6 Terra and GPT-6 Cyber support multimodal inputs.

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

GPT-5.6 Terra

Text
Images
Audio
Video

GPT-6 Cyber

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-5.6 Terra

Proprietary

Closed source

GPT-6 Cyber

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-5.6 Terra was released on 2026-07-09, while GPT-6 Cyber was released on 2026-11-05.

GPT-6 Cyber is 4 months newer than GPT-5.6 Terra.

GPT-5.6 Terra

Jul 9, 2026

4 months ago

GPT-6 Cyber

Nov 5, 2026

1 weeks ago

3mo newer

Knowledge Cutoff

When training data ends

GPT-5.6 Terra has a documented knowledge cutoff of 2026-02-16, while GPT-6 Cyber's cutoff date is not specified.

We can confirm GPT-5.6 Terra's training data extends to 2026-02-16, but cannot make a direct comparison without GPT-6 Cyber's cutoff date.

GPT-5.6 Terra

Feb 2026

GPT-6 Cyber

—

Provider Availability

GPT-5.6 Terra is available from OpenAI. GPT-6 Cyber is available from OpenAI.

GPT-5.6 Terra

openai logo
OpenAI
Input Price:Input: $2.00/1MOutput Price:Output: $12.00/1M

GPT-6 Cyber

openai logo
OpenAI
Input Price:Input: $20.00/1MOutput Price:Output: $100.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against GPT-5.6 Terra and GPT-6 Cyber side-by-side, then vote on the output you prefer.

GPT-5.6 Terra
✓ Preferred
GPT-6 Cyber
Open in Playground

FAQ

Common questions about GPT-5.6 Terra vs GPT-6 Cyber.

Which is better, GPT-5.6 Terra or GPT-6 Cyber?

GPT-5.6 Terra and GPT-6 Cyber are closely matched on the LLM Stats Score at 48.5 and 40.8. GPT-5.6 Terra is made by OpenAI and GPT-6 Cyber is made by OpenAI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does GPT-5.6 Terra compare to GPT-6 Cyber in benchmarks?

GPT-5.6 Terra scores Connectors: 100.0%, HealthBench Consensus: 95.1%, Search and Function-Calling: 94.6%, GPQA: 92.9%, Capture-the-Flag Challenges (Internal): 91.8%. GPT-6 Cyber scores ExploitGym: 48.5%.

Is GPT-5.6 Terra cheaper than GPT-6 Cyber?

GPT-5.6 Terra is 10.0x cheaper for input tokens. GPT-5.6 Terra costs $2.00/M input and $12.00/M output via openai. GPT-6 Cyber costs $20.00/M input and $100.00/M output via openai.

What are the context window sizes for GPT-5.6 Terra and GPT-6 Cyber?

GPT-5.6 Terra supports 1.1M tokens and GPT-6 Cyber 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 GPT-5.6 Terra and GPT-6 Cyber?

Key differences include LLM Stats Score (48.5 vs 40.8), input pricing ($2.00 vs $20.00/M). See the full comparison above for benchmark-by-benchmark results.

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