Anthropic14 cases
Claude Opus 5.5
Explore source-linked coding projects, 3D worlds, research workflows and autonomous agents.
1M context · $4 input / $20 output per 1M tokens
Explore modelAI IDE List / Models
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Model facts, source-linked projects and usable prompts. Start with Claude Opus 5.5, or compare the models behind your coding workflow.
Anthropic
Claude Opus 5
The previous Opus generation: a baseline for evaluating an Opus 5.5 migration.
1M context · $5 input / $25 output per 1M tokens
Explore modelAnthropic
Claude Fable 5.1
Compare Fable's capacity, API cost and reported results with the current Opus model.
1M context · $10 input / $50 output per 1M tokens
Explore modelOpenAI
GPT-6 Astra
OpenAI's model for complex reasoning, coding and computer use, alongside Claude in shared comparisons.
1.05M context · $10 input / $50 output per 1M tokens
Explore modelAPI facts reviewed 2026-09-25. Each model page links to official specifications and pricing conditions.