Model
GPT-6 Astra
GPT-6 Astra is OpenAI's flagship API model for complex reasoning, coding, computer use, research, and other tool-heavy professional workflows.
- Provider
- OpenAI
- Categories
- —
- Model links
- 0
- API links
- 1
Research comparison
GPT-6 Astra vs Claude Opus 5.5
GPT-6 Astra and Claude Opus 5.5 are high-capability models from OpenAI and Anthropic. Both support text and image input, reasoning, tool-based workflows, and long contexts.
Verified Oct 3, 202610 evidence sources
Model
Claude Opus 5.5
Claude Opus 5.5 is Anthropic's current Opus model for long-running agentic coding and knowledge work, with a 1M-token context window.
- Provider
- Anthropic
- Categories
- —
- Model links
- 0
- API links
- 1
Structured facts
Entity profiles
These fields come from each entity record and are kept separate from the curated comparison notes below.
GPT-6 Astra
- Entity type
- Model
- Status
- Active
- Verified
- Oct 3, 2026
- Family
- GPT-6
- Context window
- 1,050,000
- Max output
- 128,000
- Input
- Text, Image
- Output
- Text
- Open weights
- No
- Pricing
- Input USD 10/M · Output USD 50/M
Claude Opus 5.5
- Entity type
- Model
- Status
- Active
- Verified
- Oct 3, 2026
- Family
- Claude 5.5
- Context window
- 1,000,000
- Max output
- 128,000
- Input
- Text, Image
- Output
- Text
- Open weights
- No
- Pricing
- Input USD 4/M · Output USD 20/M
Editorial comparison
Key differences
These rows are curated comparison data, distinct from automatically aggregated graph relationships.
Context window
GPT-6 Astra
1.05M tokens
Claude Opus 5.5
1M tokens
Maximum output
GPT-6 Astra
128K tokens
Claude Opus 5.5
128K tokens
Standard input / output price
GPT-6 Astra
USD 10 / USD 50 per MTok
Claude Opus 5.5
USD 4 / USD 20 per MTok
Knowledge cutoff
GPT-6 Astra
Apr 30, 2026
Claude Opus 5.5
Jun 2026
Primary API
GPT-6 Astra
OpenAI API
Claude Opus 5.5
Claude API
Knowledge graph