# GPT-5.6 Terra

27 Hacker News commenters recommended GPT-5.6 Terra and 29 criticized it, November 2025 to November 2026. It was recommended in 5 of 13 months.

**Verdict:** People recommend Terra as a faster, cheaper model close to Sol in quality. Critics say it is hard to tell apart from Sol and weak on technical tasks.

## Why people recommend it

- Strong coding and writing results (4 comments): "GPT-5.6 Terra has been doing a significantly better job at writing concise PR bodies and commit messages" ([source](https://news.ycombinator.com/item?id=49499112)) "Our custom enterprise agent is currently running on 5.6-Terra and it's already very good." ([source](https://news.ycombinator.com/item?id=50250302)) "as good as Fable on DeepSWE while cheaper than Opus API pricing" ([source](https://news.ycombinator.com/item?id=48849187))
- Cuts costs and response times (3 comments): "Terra if the benchmarks are as claimed is indeed a half-price GPT 5.5 at comparable performance" ([source](https://news.ycombinator.com/item?id=48689133)) "has cut our cost in half by itself, as well as improved response times by 50%" ([source](https://news.ycombinator.com/item?id=48889044)) "it seems to work well, and reduce costs a lot" ([source](https://news.ycombinator.com/item?id=49113174))
- Better than GPT-5.5 (3 comments): "Terra if the benchmarks are as claimed is indeed a half-price GPT 5.5 at comparable performance" ([source](https://news.ycombinator.com/item?id=48689133)) "I too have been using 5.3 codex as a cheap-but-good model and are switching to Terra (xhigh)" ([source](https://news.ycombinator.com/item?id=48852706)) "Terra is better than GPT 5.5" ([source](https://news.ycombinator.com/item?id=48975697))
- Faster and cheaper than Sol (2 comments): "The Terra quality is usually nearly as good as Sol, but much faster and cheaper." ([source](https://news.ycombinator.com/item?id=48865467)) "Terra has better latency and output speed than Sol" ([source](https://news.ycombinator.com/item?id=48852549))

## What people warn about

- Hard to tell from Sol (3 comments): "Trying to convince us there is a difference between GPT-6-Sol and GPT-5.6-Terra or whatnot is ludicrous to the point of being insulting" ([source](https://news.ycombinator.com/item?id=49808608)) "Trying to pick between "Sol" and "Terra" is like asking the average person if they want the Max or the Ultra chip." ([source](https://news.ycombinator.com/item?id=48849674)) "I am sick and tired of the inconsistencies in GPT model families" ([source](https://news.ycombinator.com/item?id=49806049))
- Weak on technical tasks (3 comments): "Terra has not been able to do any of the technical tasks I've asked of it correctly." ([source](https://news.ycombinator.com/item?id=49276790)) "GPT-5.6 Terra actually scores worse than GPT-5.5 on many benchmarks" ([source](https://news.ycombinator.com/item?id=48828145)) "Terra really struggles here even compare to Luna" ([source](https://news.ycombinator.com/item?id=48852039))
- Expensive for its results (3 comments): "OpenAI is about to charge way more money for GPT-5.6 Sol and GPT-5.6 Terra, than if they named it GPT-5.6 and GPT-5.6-mini." ([source](https://news.ycombinator.com/item?id=48829299)) "OpenAI is about to charge way more money for GPT-5.6 Sol and GPT-5.6 Terra" ([source](https://news.ycombinator.com/item?id=48828174)) "Terra is too expensive and Luna not really fit for the task." ([source](https://news.ycombinator.com/item?id=48859325))
- Poor pelican drawings (2 comments): "something is wrong with Terra model series, most pelicans, except Max, looks bad" ([source](https://news.ycombinator.com/item?id=48850977)) "the pelicans from Terra were quite weird all things considered" ([source](https://news.ycombinator.com/item?id=48944278))

## Alternatives hackers recommend

- [Claude Opus](https://hackerapproved.com/p/claude-opus.md): 3331 recommend
- [OpenAI GPT](https://hackerapproved.com/p/gpt-5-5.md): 1205 recommend
- [Claude Sonnet](https://hackerapproved.com/p/claude-sonnet.md): 854 recommend
- [DeepSeek V4 Flash](https://hackerapproved.com/p/deepseek-v4-flash.md): 828 recommend
- [Fable](https://hackerapproved.com/p/fable.md): 823 recommend

## Cite as

Hacker Approved, "GPT-5.6 Terra", https://hackerapproved.com/p/gpt-5-6-terra/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).