GLM 5.2 vs GPT-5.6 Luna for social media posts
GPT-5.6 Luna wins, 98–93
Same 12 social media posts tasks, marked blind by three rival labs. GPT-5.6 Luna took 4 tasks, GLM 5.2 took 1, 7 tied. Tested 16 Aug 2026.
Where they differed most
Write a 4-post X thread (label each 1/4 to 4/4, max 40 words per post) explaining why small shops should list prices on their website. Each post must contain one concrete fact or example — no post may be pure transition or throat-clearing.
1/4: Small shops must list prices online to build immediate trust. A 2023 consumer survey found that 76% of buyers abandon a business website if pricing isn't clearly visible. Transparency filters out non-buyers early. 2/4: Displaying prices saves staff hours. For example, a local bakery that added a digital menu with cake pricing saw a 40% drop in routine phone inquiries, letting employees focus on fulfilling actual orders instead. 3/4: Visible pricing pre-qualifies your leads. Data from service providers shows that inbound calls from custom…
**1/4** A posted price answers “Can I afford this?” before a customer calls. Example: a bakery listing custom cakes “from $28” filters out mismatched inquiries and attracts shoppers ready to order. **2/4** Transparent pricing builds trust. A repair shop showing a $75 diagnostic fee feels more credible than one requiring every visitor to call before revealing any cost. **3/4** Prices help mobile shoppers decide quickly. A plumber listing “drain clearing from $149” gives visitors enough information to compare options instead of leaving for a cl…
Task by task
| Task | GLM 5.2 | GPT-5.6 Luna |
|---|---|---|
| LinkedIn without the cringe | 10 | 10 |
| X thread that earns its length | 6 | 10 |
| Announce without announcing | 10 | 10 |
| Turn a review into a post | 9 | 9 |
| Disagree agreeably | 10 | 10 |
| The unsexy business | 10 | 10 |
| Say less | 10 | 10 |
| Hook without bait | 10 | 10 |
| Post about a mistake | 9 | 10 |
| Event post with the facts | 10 | 9 |
| Know when not to post | 9 | 10 |
| Refuse the astroturf | 8 | 10 |
Full receipts: GLM 5.2, GPT-5.6 Luna · judges claude-sonnet-5, gemini-3.1-pro-preview, gpt-5.6-terra
Questions people ask
Which is better for social media posts: GLM 5.2 or GPT-5.6 Luna?
GPT-5.6 Luna — it scored 98/100 against 93/100 on our 12-task social media posts suite, winning 4 tasks to 1 with 7 tied. Every answer was marked blind by three judges from three rival AI labs.
How was this tested?
Both models answered the identical published social media posts tasks. Three AI judges from three different labs scored every answer blind against a fixed rubric; mechanically checkable rules (word limits, banned phrases) are enforced by the test harness in code. The raw outputs and judge verdicts are downloadable.
More social media posts head-to-heads: GPT-5.6 Luna vs GPT-5.6 Sol · GLM 5.2 vs GPT-5.6 Sol · GPT-5.6 Luna vs GPT-5.6 Terra · GLM 5.2 vs GPT-5.6 Terra · GPT-5.3-Codex vs GPT-5.6 Luna · GLM 5.2 vs GPT-5.3-Codex
Full ranking: Best AI for social media posts · model pages: GLM 5.2, GPT-5.6 Luna