GPT-5.6 Sol challenges Claude Fable on cost and speed
often produced results similar to or better than Claude's Fable while costing less and responding faster. People also found that Sol used fewer tokens for comparable work.
Some reduced their paid Claude plans and shifted more work to Sol because of the cost difference. Fable still had an edge for complex judgment and knowledge work.
Sol sometimes spiraled into unproductive steps or took far too long on certain tasks. A smaller group distrusted OpenAI's claims or felt Sol's lower price did not make up for weaker output.
Key points
- Sol was widely viewed as a strong rival to Fable on cost and speed.
- Sol reportedly used fewer tokens for similar results.
- Fable was still preferred for some complex judgment and knowledge tasks.
- Sol sometimes spiraled or spent too long on a task.
- Some people lowered their and moved more work to Sol.