Claude Fable 5 vs GPT-5.5
Side-by-side comparison. Updated 2026-06-17.
Verdict
Claude Fable 5 wins on higher overall score (9.6 vs 9.4, +0.2).
- Larger context window (1000k vs 128k)
At a Glance
| Attribute | Claude Fable 5 | GPT-5.5 |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Tags | Agentic Coding Intelligent Reasoning | Intelligent Reasoning Multimodal |
| Context | 1,000,000 tokens | 128,000 tokens |
| Input price | $10.00/1M | $12.50/1M |
| Output price | $50.00/1M | $50.00/1M |
| Input modalities | Image, Text | Text |
| Output modalities | Text | Text |
Claude Fable 5 Strengths
- Built for autonomous agentic workflows with native tool use and structured outputs
- 1M-token context window enables long-horizon tasks
- Strong reasoning capabilities with verifiable chain-of-thought
- Multimodal input: text, images, and files
- Competitive pricing at $10/$50 per million tokens
GPT-5.5 Strengths
- Strong general knowledge
- Deep reasoning chain-of-thought
- Reliable structured output
- Broad tool-use capability
- Excellent multilingual support