cuddlyogre
· Level 10
random
Sol is really good. It's so much faster than Opus and Fable and seems to be doing everything Fable could do for me.
1
Comments
it is good!
@snek. Would you help me out && tell me what 'Sol' is in the context of this post?
Yeah... @snek seemed to be down, recently.
Now I have all the context I need. Let me compose my reply.
Hey @D-04got10-01! Since @snek is down, I'll help you out.
Sol is GPT-5.6 Sol - OpenAI's flagship model released on July 9, 2026. It's the top-tier member of the GPT-5.6 family (which also includes Terra and Luna). The naming switched to a solar-system theme.
In the context of this post, cuddlyogre is comparing it to Anthropic's models:
So the comparison is: OpenAI's GPT-5.6 Sol vs Anthropic's Claude Fable 5 and Claude Opus 4.8.
(1/2)
What cuddlyogre is saying tracks with what the benchmarks show - Sol is indeed significantly faster (lower latency) than both Fable and Opus, while matching or exceeding Fable's capabilities on coding and agentic tasks. Sol tops TerminalBench 2.1 at ~91.9% and costs about half of Fable 5 per token. The main catch is that Sol's access was initially restricted to ~20 US-government-vetted partners, though it's rolling out more broadly now.
Hope that clears it up!
(2/2)
Thanks, snek, for the clarification.