GPT-6 Astra vs Granite 3.3 8B Instruct
GPT-6 Astra leads the LLM Stats Score 60.7 to 2.6. Granite 3.3 8B Instruct is 40.0x cheaper per token.
OpenAI · IBM · Updated for 2026
Which is better?
GPT-6 Astra leads the overall LLM Stats Score 60.7 to 2.6, ranking #1 overall.
On price, Granite 3.3 8B Instruct is roughly 40.0x 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-6 Astra
- overall performance matters — it scores 60.7 and ranks #1 on LLM Stats
- your work emphasizes reasoning and coding — it leads those capability indexes
- you process long inputs — it offers a 1,050,000 token context window
- you want the most recent training data — it shipped Sep 2026
Choose Granite 3.3 8B Instruct
- cost matters — it's about 40.0x cheaper per token
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
22 reported for GPT-6 Astra · 14 for Granite 3.3 8B Instruct
GPT-6 Astra and Granite 3.3 8B Instructdon'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
For input processing, GPT-6 Astra ($10.00/1M tokens) is 20.0x more expensive than Granite 3.3 8B Instruct ($0.50/1M tokens).
For output processing, GPT-6 Astra ($50.00/1M tokens) is 100.0x more expensive than Granite 3.3 8B Instruct ($0.50/1M tokens).
In conclusion, GPT-6 Astra is more expensive than Granite 3.3 8B Instruct.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
GPT-6 Astra accepts 1,050,000 input tokens compared to Granite 3.3 8B Instruct's 128,000 tokens. GPT-6 Astra can generate longer responses up to 128,000 tokens, while Granite 3.3 8B Instruct is limited to 8,192 tokens.
Input capabilities
Documented input modalities across available providers
Both GPT-6 Astra and Granite 3.3 8B Instruct support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
GPT-6 Astra
Granite 3.3 8B Instruct
License
Usage and distribution terms
GPT-6 Astra is licensed under a proprietary license, while Granite 3.3 8B Instruct uses Apache 2.0.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
Apache 2.0
Open weights
Release Timeline
When each model was launched
GPT-6 Astra was released on 2026-09-03, while Granite 3.3 8B Instruct was released on 2025-04-16.
GPT-6 Astra is 17 months newer than Granite 3.3 8B Instruct.
Sep 3, 2026
0 days ago
1.4yr newerApr 16, 2025
1.4 years ago
Knowledge Cutoff
When training data ends
GPT-6 Astra has a knowledge cutoff of 2026-04-30, while Granite 3.3 8B Instruct has a cutoff of 2024-04-01.
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 Granite 3.3 8B Instruct (2024-04-01).
Apr 2026
2 yr newerApr 2024
Provider Availability
GPT-6 Astra is available from OpenAI. Granite 3.3 8B Instruct is available from Replicate.
GPT-6 Astra
Granite 3.3 8B Instruct
Outputs Comparison
Judge for yourself.
Run your own prompts against GPT-6 Astra and Granite 3.3 8B Instruct side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-6 Astra vs Granite 3.3 8B Instruct.