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GPT-6 Astra vs Shieldstral 1.0 (3B)

GPT-6 Astra leads the LLM Stats Score 59.6 to -2.4.

OpenAI · Mistral AI · Updated for 2026

Which is better?

GPT-6 Astra leads the overall LLM Stats Score 59.6 to -2.4, ranking #1 overall.

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

Choose GPT-6 Astra

  • overall performance matters — it scores 59.6 and ranks #1 on LLM Stats
  • you want the most recent training data — it shipped Sep 2026

Choose Shieldstral 1.0 (3B)

  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

GPT-6 Astra
OpenAI
Shieldstral 1.0 (3B)
Mistral AI
Core performance indexes
LLM Stats Score
59.6
#1
-2.4
#338
Cost, coverage & limits
Benchmark wins
—
—
Input price
$10.00 / M
— / M
Output price
$50.00 / M
— / M
Context window
1,050,000
—

Individual benchmarks

22 reported for GPT-6 Astra · 1 for Shieldstral 1.0 (3B)

No common benchmarks found

GPT-6 Astra and Shieldstral 1.0 (3B)don'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 Astra specifies input context (1,050,000 tokens). Only GPT-6 Astra specifies output context (128,000 tokens).

OpenAI
GPT-6 Astra
Input1,050,000 tokens
Output128,000 tokens
Mistral AI
Shieldstral 1.0 (3B)
Input- tokens
Output- tokens
Sun Sep 20 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both GPT-6 Astra and Shieldstral 1.0 (3B) support multimodal inputs.

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

GPT-6 Astra

Text
Images
Audio
Video

Shieldstral 1.0 (3B)

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-6 Astra is licensed under a proprietary license, while Shieldstral 1.0 (3B) uses Apache 2.0.

License differences may affect how you can use these models in commercial or open-source projects.

GPT-6 Astra

Proprietary

Closed source

Shieldstral 1.0 (3B)

Apache 2.0

Open weights

Release Timeline

When each model was launched

GPT-6 Astra was released on 2026-09-04, while Shieldstral 1.0 (3B) was released on 2026-08-04.

GPT-6 Astra is 1 month newer than Shieldstral 1.0 (3B).

GPT-6 Astra

Sep 4, 2026

2 weeks ago

1mo newer
Shieldstral 1.0 (3B)

Aug 4, 2026

1 months ago

Knowledge Cutoff

When training data ends

GPT-6 Astra has a documented knowledge cutoff of 2026-04-30, while Shieldstral 1.0 (3B)'s cutoff date is not specified.

We can confirm GPT-6 Astra's training data extends to 2026-04-30, but cannot make a direct comparison without Shieldstral 1.0 (3B)'s cutoff date.

GPT-6 Astra

Apr 2026

Shieldstral 1.0 (3B)

—

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against GPT-6 Astra and Shieldstral 1.0 (3B) side-by-side, then vote on the output you prefer.

GPT-6 Astra
✓ Preferred
Shieldstral 1.0 (3B)
Open in Playground

FAQ

Common questions about GPT-6 Astra vs Shieldstral 1.0 (3B).

Which is better, GPT-6 Astra or Shieldstral 1.0 (3B)?

GPT-6 Astra leads the LLM Stats Score 59.6 to -2.4. GPT-6 Astra is made by OpenAI and Shieldstral 1.0 (3B) is made by Mistral AI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does GPT-6 Astra compare to Shieldstral 1.0 (3B) 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%. Shieldstral 1.0 (3B) scores XSTest: 94.6%.

What are the context window sizes for GPT-6 Astra and Shieldstral 1.0 (3B)?

GPT-6 Astra supports 1.1M tokens and Shieldstral 1.0 (3B) supports an unknown number of 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 Astra and Shieldstral 1.0 (3B)?

Key differences include LLM Stats Score (59.6 vs -2.4), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-6 Astra and Shieldstral 1.0 (3B)?

GPT-6 Astra is developed by OpenAI and Shieldstral 1.0 (3B) is developed by Mistral AI.

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