Head to head
OpenAI: GPT-5.6 Sol vs Anthropic: Claude Fable 5.1
Live prices, context windows, capabilities, and measured quality — updated continuously.
Side by side
| Metric | OpenAI: GPT-5.6 Sol Openai | Anthropic: Claude Fable 5.1 Anthropic |
|---|---|---|
| Input $/M tokens | $1.00 | $10.00 |
| Output $/M tokens | $5.00 | $50.00 |
| Context window | 1.1M | 1.0M |
| Max output | 128K | 128K |
| WM Score | 92 | 92 |
| Benchmark quality | 93.6 | 97.6 |
| Hosts serving it | 3 | 4 |
| Throughput (tok/s) | 50 | 56 |
| Latency (ms) | 4210 | 3916 |
| Vision | ||
| Tools | ||
| Reasoning | ||
| JSON mode |
Which should you pick?
OpenAI: GPT-5.6 Sol costs less per million input tokens — about 10.0× cheaper than Anthropic: Claude Fable 5.1. Anthropic: Claude Fable 5.1 scores higher on measured quality. OpenAI: GPT-5.6 Sol takes a larger context window, which matters for long documents or big codebases. Prices here are live list prices; the same model can cost less on a different host, so check the model page for the cheapest offering.