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GPT-5.6 Cyber vs GPT-6 Astra

Comparing GPT-5.6 Cyber and GPT-6 Astra across benchmarks, pricing, and capabilities.

OpenAI · OpenAI · Updated for 2026

Which is better?

GPT-5.6 Cyber and GPT-6 Astra trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.

On price, GPT-6 Astra is roughly 1.4x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

GPT-6 Astra also accepts a larger context window (1,050,000 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-5.6 Cyber

  • you want predictable pricing at $12.50/M input and $75.00/M output

Choose GPT-6 Astra

  • cost matters — it's about 1.4x cheaper per token
  • you process long inputs — it offers a 1,050,000 token context window
  • you want the most recent training data — it shipped Sep 2026

At a glance

The differences that matter most.

GPT-5.6 Cyber
OpenAI
GPT-6 Astra
OpenAI
Benchmark wins
—
—
Input price
$12.50 / M
$10.00 / M
Output price
$75.00 / M
$50.00 / M
Context window
400,000
1,050,000

Individual benchmarks

0 reported for GPT-5.6 Cyber · 22 for GPT-6 Astra

No common benchmarks found

GPT-5.6 Cyber and GPT-6 Astradon'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

GPT-6 Astra costs less

For input processing, GPT-5.6 Cyber ($12.50/1M tokens) is 1.3x more expensive than GPT-6 Astra ($10.00/1M tokens).

For output processing, GPT-5.6 Cyber ($75.00/1M tokens) is 1.5x more expensive than GPT-6 Astra ($50.00/1M tokens).

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

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

Lowest available price from all providers
Sun Sep 13 2026 • llm-stats.com
OpenAI
GPT-5.6 Cyber
Input tokens$12.50
Output tokens$75.00
Best providerOpenAI
OpenAI
GPT-6 Astra
Input tokens$10.00
Output tokens$50.00
Best providerOpenAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

GPT-6 Astra accepts 1,050,000 input tokens compared to GPT-5.6 Cyber's 400,000 tokens. Both models can generate responses up to 128,000 tokens.

OpenAI
GPT-5.6 Cyber
Input400,000 tokens
Output128,000 tokens
OpenAI
GPT-6 Astra
Input1,050,000 tokens
Output128,000 tokens
Sun Sep 13 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

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

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

GPT-5.6 Cyber

Text
Images
Audio
Video

GPT-6 Astra

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 Cyber

Proprietary

Closed source

GPT-6 Astra

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-5.6 Cyber was released on 2026-08-10, while GPT-6 Astra was released on 2026-09-04.

GPT-6 Astra is 1 month newer than GPT-5.6 Cyber.

GPT-5.6 Cyber

Aug 10, 2026

1 months ago

GPT-6 Astra

Sep 4, 2026

1 weeks ago

3w newer

Knowledge Cutoff

When training data ends

GPT-5.6 Cyber has a knowledge cutoff of 2026-02-16, while GPT-6 Astra has a cutoff of 2026-04-30.

GPT-6 Astra has more recent training data (up to 2026-04-30), making it potentially better informed about events through that date compared to GPT-5.6 Cyber (2026-02-16).

GPT-5.6 Cyber

Feb 2026

GPT-6 Astra

Apr 2026

2 mo newer

Provider Availability

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

GPT-5.6 Cyber

openai logo
OpenAI
Input Price:Input: $12.50/1MOutput Price:Output: $75.00/1M

GPT-6 Astra

openai logo
OpenAI
Input Price:Input: $10.00/1MOutput Price:Output: $50.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

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

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

FAQ

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

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

GPT-5.6 Cyber (OpenAI) and GPT-6 Astra (OpenAI) 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-5.6 Cyber compare to GPT-6 Astra in benchmarks?

GPT-6 Astra scores ExploitBench: 100.0%, ARC-AGI-3: 99.9%, ARC-AGI: 98.5%, FrontierMath Tier 4 (v2): 97.6%, GPQA: 96.0%.

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

GPT-6 Astra is 1.3x cheaper for input tokens. GPT-5.6 Cyber costs $12.50/M input and $75.00/M output via openai. GPT-6 Astra costs $10.00/M input and $50.00/M output via openai.

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

GPT-5.6 Cyber supports 400K tokens and GPT-6 Astra 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 Cyber and GPT-6 Astra?

Key differences include context window (400K vs 1.1M), input pricing ($12.50 vs $10.00/M). See the full comparison above for benchmark-by-benchmark results.

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