Claude Opus 5.5 vs GPT-6 Astra (2026)

Claude Opus 5.5 and GPT-6 Astra both sit in the LLM models category. Claude Opus 5.5 carries the stronger rating (4.6/5 against 4.6/5). Both sit in the same price tier (Freemium), so the difference is what you get for it. Every number below is read from our listing data, not from a press release.

Claude Opus 5.5 logo
Claude Opus 5.5

anthropic.com

Freemium

An AI model built for code and autonomous agents.

Visit Claude Opus 5.5
GPT-6 Astra logo
GPT-6 Astra

openai.com

Freemium

The OpenAI model capable of operating a computer like a human: filling out forms, managing a CRM, coding, analyzing scientific data, or conducting…

Visit GPT-6 Astra

Head to head

Claude Opus 5.5MetricGPT-6 Astra
FreemiumPricing modelFreemium
4.6 / 5Rating4.6 / 5
7Ratings behind it7
220,257leadDirectory reads218,548
#1leadRank on the source list#2
66.6leadOur ranking score66.6
LLM models, SuperToolsCategoriesLLM models, SuperTools
Latest AI, LLM models, SuperToolsTagsLatest AI, LLM models, SuperTools
YesVerified listingYes

“lead” marks the better number in our data for that row. Ratings and reads are mirrored from the public source directory; they measure what people say and use, not what either vendor claims.

Choose Claude Opus 5.5 if

Claude Opus 5.5 is ahead on more directory readership (220,257 vs 218,548), a better position on the source list (#1). It is filed under Latest AI, LLM models, SuperTools.

An AI model built for code and autonomous agents.

Choose GPT-6 Astra if

Nothing in our published data puts GPT-6 Astra ahead of Claude Opus 5.5. It is filed under Latest AI, LLM models, SuperTools. Judge this side on the fit for your workflow.

The OpenAI model capable of operating a computer like a human: filling out forms, managing a CRM, coding, analyzing scientific data, or conducting…

Our read

On the fields we publish (rating 4.6/5 from 7 reviews, 220,257 directory reads, Freemium pricing) - Claude Opus 5.5 scores 66.6 against 66.6 for GPT-6 Astra in 2026. That is a shortlist signal, not a guarantee for your workload: GPT-6 Astra can still be the better tool if the workflow it fits is yours. Run both on the same job before committing to a paid plan.

How we compare tools

We only publish comparisons between tools that sit in the same category in our index, and every row in the table above is read straight from those listings.

Outbound links on this page are tracked for popularity counts only. No listing here is paid placement.