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GPT-5.6 Cyber vs Muse Spark 1.3

Comparing GPT-5.6 Cyber and Muse Spark 1.3 across benchmarks, pricing, and capabilities.

OpenAI · Meta · Updated for 2026

Which is better?

GPT-5.6 Cyber and Muse Spark 1.3 trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.

On price, Muse Spark 1.3 is roughly 225.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Muse Spark 1.3 also accepts a larger context window (1,048,576 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 Muse Spark 1.3

  • cost matters — it's about 225.0x cheaper per token
  • you process long inputs — it offers a 1,048,576 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
Muse Spark 1.3
Meta
Benchmark wins
—
—
Input price
$12.50 / M
$0.10 / M
Output price
$75.00 / M
$0.20 / M
Context window
400,000
1,048,576

Individual benchmarks

0 reported for GPT-5.6 Cyber · 11 for Muse Spark 1.3

No common benchmarks found

GPT-5.6 Cyber and Muse Spark 1.3don'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

Muse Spark 1.3 costs less

For input processing, GPT-5.6 Cyber ($12.50/1M tokens) is 125.0x more expensive than Muse Spark 1.3 ($0.10/1M tokens).

For output processing, GPT-5.6 Cyber ($75.00/1M tokens) is 375.0x more expensive than Muse Spark 1.3 ($0.20/1M tokens).

In conclusion, GPT-5.6 Cyber is more expensive than Muse Spark 1.3.*

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

Lowest available price from all providers
Mon Sep 14 2026 • llm-stats.com
OpenAI
GPT-5.6 Cyber
Input tokens$12.50
Output tokens$75.00
Best providerOpenAI
Meta
Muse Spark 1.3
Input tokens$0.10
Output tokens$0.20
Best providerMeta
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Muse Spark 1.3 accepts 1,048,576 input tokens compared to GPT-5.6 Cyber's 400,000 tokens. Muse Spark 1.3 can generate longer responses up to 943,718 tokens, while GPT-5.6 Cyber is limited to 128,000 tokens.

OpenAI
GPT-5.6 Cyber
Input400,000 tokens
Output128,000 tokens
Meta
Muse Spark 1.3
Input1,048,576 tokens
Output943,718 tokens
Mon Sep 14 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both GPT-5.6 Cyber and Muse Spark 1.3 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

Muse Spark 1.3

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

Muse Spark 1.3

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-5.6 Cyber was released on 2026-08-10, while Muse Spark 1.3 was released on 2026-09-02.

Muse Spark 1.3 is 1 month newer than GPT-5.6 Cyber.

GPT-5.6 Cyber

Aug 10, 2026

1 months ago

Muse Spark 1.3

Sep 2, 2026

1 weeks ago

3w newer

Knowledge Cutoff

When training data ends

GPT-5.6 Cyber has a documented knowledge cutoff of 2026-02-16, while Muse Spark 1.3's cutoff date is not specified.

We can confirm GPT-5.6 Cyber's training data extends to 2026-02-16, but cannot make a direct comparison without Muse Spark 1.3's cutoff date.

GPT-5.6 Cyber

Feb 2026

Muse Spark 1.3

—

Provider Availability

GPT-5.6 Cyber is available from OpenAI. Muse Spark 1.3 is available from Meta Model API.

GPT-5.6 Cyber

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

Muse Spark 1.3

meta logo
Meta
Input Price:Input: $0.10/1MOutput Price:Output: $0.20/1M
* 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 Muse Spark 1.3 side-by-side, then vote on the output you prefer.

GPT-5.6 Cyber
✓ Preferred
Muse Spark 1.3
Open in Playground

FAQ

Common questions about GPT-5.6 Cyber vs Muse Spark 1.3.

Which is better, GPT-5.6 Cyber or Muse Spark 1.3?

GPT-5.6 Cyber (OpenAI) and Muse Spark 1.3 (Meta) 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 Muse Spark 1.3 in benchmarks?

Muse Spark 1.3 scores MRCR v2 (8-needle): 98.5%, MRCR v2 (8-needle, 512K-1M): 98.1%, DeepSearchQA: 89.4%, Terminal-Bench 2.1: 88.8%, DeepSWE 1.1: 75.4%.

Is GPT-5.6 Cyber cheaper than Muse Spark 1.3?

Muse Spark 1.3 is 125.0x cheaper for input tokens. GPT-5.6 Cyber costs $12.50/M input and $75.00/M output via openai. Muse Spark 1.3 costs $0.10/M input and $0.20/M output via meta.

What are the context window sizes for GPT-5.6 Cyber and Muse Spark 1.3?

GPT-5.6 Cyber supports 400K tokens and Muse Spark 1.3 supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GPT-5.6 Cyber and Muse Spark 1.3?

Key differences include context window (400K vs 1.0M), input pricing ($12.50 vs $0.10/M). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-5.6 Cyber and Muse Spark 1.3?

GPT-5.6 Cyber is developed by OpenAI and Muse Spark 1.3 is developed by Meta.

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