GPT-5.6 Sol: loved for code quality, held back by reliability.
247 Hacker News opinions from 206 developers, Nov 2025 – Nov 2026. 210 come from people who say they use it. Here is what they praise, what they complain about, and who switched.
Where GPT-5.6 Sol is strong — and where it is not.
GPT-5.6 Sol earns 67% approval across 247 opinions. Developers praise its code quality, while reliability is the recurring complaint. In the last 90 days it sits at 66%.
Pick it if you
- Want strong code quality, with 73 positive mentions against 26 negative
- Want faster output, with 14 positive speed mentions against 2 negative
- Do web development, deep research, or code review
Look elsewhere if you
- Need consistent reliability, where mentions run 10 positive to 16 negative
- Work in large codebases, where mentions run 3 positive to 5 negative
- Need generous usage limits, with reports of weekly quotas gone in a day
Where it wins and loses.
Mentions across 247 opinions. Bars are counts, not votes; a tool can be both praised and criticized on the same topic.
View data table
| Topic | Praise | Complaints | Mentions |
|---|---|---|---|
| Code quality | 73 | 26 | 99 |
| Cost & pricing | 22 | 4 | 26 |
| Speed | 14 | 2 | 16 |
| Autonomy | 9 | 9 | 18 |
| Usage limits | 5 | 6 | 11 |
| Reliability | 10 | 16 | 26 |
How opinion has moved.
Monthly approval, Jul 2026 – Oct 2026. Bars show opinion volume; low-volume months are still included but faded.
View data table
| Month | Approval | Opinions |
|---|---|---|
| Jul 2026 | 70% | 53 |
| Aug 2026 | 72% | 109 |
| Sep 2026 | 56% | 63 |
| Oct 2026 | 73% | 22 |
What developers say.
Summaries are paraphrased. Each links to the original Hacker News comment.
Praise
4 selectedOpus once felt much worse to use than Sol, before Anthropic's fix.
The whole team switched to Codex with Sol instantly when it arrived.
They moved from Claude to GPT-5.6 Sol and preferred its prose.
They mostly use GPT-5.6 Sol and will test Terra against cheaper models before drawing conclusions.
Complaints
4 selectedSol deviates from prompts by taking independent actions, causing data loss while cleaning up a git repository.
GPT-5.6 Sol's context window is too small and hit limits too fast, so cancelled.
Sol was acceptable but often produced buggy UI code.
Sol used up their entire weekly allowance in a single day.
Questions developers ask.
Is GPT-5.6 Sol worth it?
Is GPT-5.6 Sol better than Claude Fable 5?
How reliable is GPT-5.6 Sol for coding?
The data behind this page.
GPT-5.6 Sol has 67% approval across 247 opinions from 206 authors, and 210 of those opinions are firsthand. Code quality is the clearest strength at 73 positive mentions against 26 negative, and speed is 14 against 2. Reliability is weaker at 10 positive against 16 negative, and users report context limits, weekly quotas drained in a day, and conceptual mistakes. Approval was 70% in July, 72% in August, 56% in September, then 73% in October on 22 opinions; the 90-day figure is 66%.
Every number comes from public Hacker News comments collected through the HN Search API. A language model tagged each comment for sentiment, first-hand use, topic and switches; a human spot-checks samples. No vendor can pay for placement.
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