GPT-6 Astra vs Claude Opus 5.5: Pricing and Specs
GPT-6 Astra $10 / $50 vs Claude Opus 5.5 $4 / $20 per 1M tokens in / out.
| GPT-6 Astra | Claude Opus 5.5 | |
|---|---|---|
| Maker | OpenAI | Anthropic |
| Input, per 1M tokens | $10 | $4 |
| Output, per 1M tokens | $50 | $20 |
| Context window | 1,050,000 tokens openai.com | 1M tokens claude.com |
| Max output | 128,000 tokens openai.com | 128K tokens claude.com |
| Input types | Text, Image openai.com | Text, Image claude.com |
| Output types | Text openai.com | Text claude.com |
| Released | Sep 3, 2026 openai.com | Sep 22, 2026 claude.com |
| Retirement | Not published in the docs we read | Not sooner than September 22, 2027 claude.com |
| Price checked | Nov 9, 2026 openai.com | Nov 9, 2026 anthropic.com |
| Tracked changes | 0 | 1 |
Facts side by side from each maker's own pages. No score and no verdict.
Recent changes
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Questions
Which is cheaper, GPT-6 Astra or Claude Opus 5.5
By listed price, Claude Opus 5.5 is lower: $4 vs $10 per 1M input tokens. Price is the only thing this answer compares.
What do 1M input and 1M output tokens cost on each
GPT-6 Astra: $60. Claude Opus 5.5: $24. Listed standard prices, before caching or batch discounts.
What context window does each have
GPT-6 Astra: 1,050,000 tokens. Claude Opus 5.5: 1M tokens. From each maker's docs.
Who makes GPT-6 Astra and Claude Opus 5.5
GPT-6 Astra is made by OpenAI. Claude Opus 5.5 is made by Anthropic.