Model vs model
Gemini 3.1 Pro (preview) vs GLM 5.3
Gemini 3.1 Pro (preview) and GLM 5.3 are both in llmwise. What each gets on every plan, what it reads, how it's served and what happens when its provider fails, from the catalog and the code that runs them.
Model prices and specs checked against OpenRouter's Gemini 3.1 Pro page, OpenRouter's GLM 5.3 page. Updated .
Short answer
GLM 5.3 gets twice as many messages: up to 250 messages a month on Pro, against up to 125 messages a month for Gemini 3.1 Pro (preview). Otherwise, only Gemini 3.1 Pro (preview) reads images and only Gemini 3.1 Pro (preview) reads a PDF as the whole file. In our test runs, Gemini 3.1 Pro (preview) passed 49 of the 50 prompts both answered and GLM 5.3 48; one prompt split them, most on summarization (5 to 4).
Gemini 3.1 Pro (preview) vs GLM 5.3, prompt by prompt
Every prompt Gemini 3.1 Pro (preview) and GLM 5.3 both answered, compared directly, their biggest differences first. One run each, through OpenRouter: a wait depends on the provider and the load that day, so a lead under 10% counts as close.
Of the 50 prompts both answered, both passed 48, only Gemini 3.1 Pro (preview) passed 1, only GLM 5.3 passed 0, and neither passed 1. Gemini 3.1 Pro (preview) answered sooner on 0 of the 50 and GLM 5.3 on 50; the rest were within 10% of each other. The 50 replies cost $0.5334 on Gemini 3.1 Pro (preview) and $0.0364 on GLM 5.3: 14.7× less on GLM 5.3.
The prompt only one of Gemini 3.1 Pro (preview) and GLM 5.3 passed
An article in three bullets (summarization): Gemini 3.1 Pro (preview) passed and GLM 5.3 didn't. Gemini 3.1 Pro (preview): Graded 4.3 of 5 on average (lowest 4). GLM 5.3: Graded 4.3 of 5 on average (lowest 3); but 68 words, over the 60 allowed.
Job by job, the widest gaps first
Summarization: Gemini 3.1 Pro (preview) passed 5 of 5 and GLM 5.3 4 of 5. GLM 5.3 answered 7.2× sooner at the median, 8.0 s against 1.1 s. GLM 5.3 cost 16.2× less, $0.0441 against $0.0027 for the 5 replies. GLM 5.3's replies ran 19% longer, in tokens of reply, thinking not counted.
Math: Gemini 3.1 Pro (preview) passed 5 of 5 and GLM 5.3 5 of 5. GLM 5.3 answered 8.8× sooner at the median, 8.3 s against 0.9 s. GLM 5.3 cost 28.3× less, $0.0501 against $0.0018 for the 5 replies. Gemini 3.1 Pro (preview)'s replies ran 168% longer, in tokens of reply, thinking not counted.
SQL: Gemini 3.1 Pro (preview) passed 5 of 5 and GLM 5.3 5 of 5. GLM 5.3 answered 6.4× sooner at the median, 7.4 s against 1.2 s. GLM 5.3 cost 24.5× less, $0.0386 against $0.0016 for the 5 replies. Gemini 3.1 Pro (preview)'s replies ran 13% longer, in tokens of reply, thinking not counted.
Customer support: Gemini 3.1 Pro (preview) passed 5 of 5 and GLM 5.3 5 of 5. GLM 5.3 answered 3.8× sooner at the median, 8.7 s against 2.3 s. GLM 5.3 cost 22.7× less, $0.0529 against $0.0023 for the 5 replies. Their replies ran to about the same length.
Translation: Gemini 3.1 Pro (preview) passed 5 of 5 and GLM 5.3 5 of 5. GLM 5.3 answered 6.5× sooner at the median, 10.3 s against 1.6 s. GLM 5.3 cost 20.0× less, $0.0699 against $0.0035 for the 5 replies. GLM 5.3's replies ran 55% longer, in tokens of reply, thinking not counted.
Writing: Gemini 3.1 Pro (preview) passed 4 of 5 and GLM 5.3 4 of 5. GLM 5.3 answered 5.2× sooner at the median, 9.1 s against 1.8 s. GLM 5.3 cost 16.0× less, $0.0459 against $0.0029 for the 5 replies. Their replies ran to about the same length.
Coding: Gemini 3.1 Pro (preview) passed 5 of 5 and GLM 5.3 5 of 5. GLM 5.3 answered 9.7× sooner at the median, 10.3 s against 1.1 s. GLM 5.3 cost 13.2× less, $0.0973 against $0.0073 for the 5 replies. Gemini 3.1 Pro (preview)'s replies ran 19% longer, in tokens of reply, thinking not counted.
Agents and tool use: Gemini 3.1 Pro (preview) passed 5 of 5 and GLM 5.3 5 of 5. GLM 5.3 answered 6.0× sooner at the median, 5.3 s against 0.9 s. GLM 5.3 cost 12.8× less, $0.0284 against $0.0022 for the 5 replies. Gemini 3.1 Pro (preview)'s replies ran 77% longer, in tokens of reply, thinking not counted.
RAG and answering from documents: Gemini 3.1 Pro (preview) passed 5 of 5 and GLM 5.3 5 of 5. GLM 5.3 answered 8.7× sooner at the median, 5.6 s against 0.6 s. GLM 5.3 cost 11.6× less, $0.0290 against $0.0025 for the 5 replies. GLM 5.3's replies ran 29% longer, in tokens of reply, thinking not counted.
Data analysis: Gemini 3.1 Pro (preview) passed 5 of 5 and GLM 5.3 5 of 5. GLM 5.3 answered 4.5× sooner at the median, 8.6 s against 1.9 s. GLM 5.3 cost 8.1× less, $0.0773 against $0.0096 for the 5 replies. Gemini 3.1 Pro (preview)'s replies ran 124% longer, in tokens of reply, thinking not counted.
All 50 prompts: who passed, who answered sooner, who cost less
| Prompt | Result | Sooner | Cheaper |
|---|---|---|---|
| Turn a title into a URL slug | Both passed | GLM 5.3, 13.8×took 6.0 s and 0.4 s | GLM 5.3, 5.5×cost $0.0056 and $0.0010 |
| Parse a duration like “1h 30m” | Both passed | GLM 5.3, 9.7×took 10.3 s and 1.1 s | GLM 5.3, 12.2×cost $0.0172 and $0.0014 |
| Merge overlapping intervals | Both passed | GLM 5.3, 10.2×took 8.6 s and 0.8 s | GLM 5.3, 12.6×cost $0.0103 and $0.0008 |
| Evaluate an arithmetic expression, no eval | Both passed | GLM 5.3, 1.6×took 20.6 s and 12.5 s | GLM 5.3, 20.7×cost $0.0351 and $0.0017 |
| Parse CSV with quoted fields | Both passed | GLM 5.3, 7.8×took 20.6 s and 2.6 s | GLM 5.3, 12.1×cost $0.0291 and $0.0024 |
| Announce a second bakery shop on LinkedIn | Both passed | GLM 5.3, 3.3×took 9.5 s and 2.9 s | GLM 5.3, 30.2×cost $0.0113 and $0.0004 |
| Rewrite corporate jargon in plain words | Both passed | GLM 5.3, 5.0×took 8.8 s and 1.8 s | GLM 5.3, 49.8×cost $0.0101 and $0.0002 |
| Decline a meeting and offer two times | Both passed | GLM 5.3, 4.3×took 6.2 s and 1.4 s | GLM 5.3, 21.8×cost $0.0058 and $0.0003 |
| A product announcement with five rules | Both passed | GLM 5.3, 10.8×took 9.2 s and 0.8 s | GLM 5.3, 12.2×cost $0.0095 and $0.0008 |
| Argue both sides of free buses | Neither passed | GLM 5.3, 5.2×took 9.1 s and 1.8 s | GLM 5.3, 7.3×cost $0.0092 and $0.0013 |
| A discount, then sales tax | Both passed | GLM 5.3, 3.8×took 3.6 s and 0.9 s | GLM 5.3, 20.7×cost $0.0042 and $0.0002 |
| Pens at 3 for $4 | Both passed | GLM 5.3, 6.5×took 9.6 s and 1.5 s | GLM 5.3, 68.0×cost $0.0121 and $0.0002 |
| Compound interest over three years | Both passed | GLM 5.3, 10.7×took 6.2 s and 0.6 s | GLM 5.3, 18.1×cost $0.0099 and $0.0005 |
| Four-digit numbers whose digits sum to 9 | Both passed | GLM 5.3, 5.2×took 9.6 s and 1.9 s | GLM 5.3, 59.4×cost $0.0150 and $0.0003 |
| The highest of three dice is a 5 | Both passed | GLM 5.3, 9.6×took 8.3 s and 0.9 s | GLM 5.3, 15.2×cost $0.0090 and $0.0006 |
| An article in three bullets | Only Gemini 3.1 Pro (preview) | GLM 5.3, 2.9×took 8.0 s and 2.8 s | GLM 5.3, 19.7×cost $0.0088 and $0.0004 |
| An email thread in one sentence | Both passed | GLM 5.3, 6.1×took 6.3 s and 1.0 s | GLM 5.3, 24.9×cost $0.0058 and $0.0002 |
| Decisions and action items from a meeting | Both passed | GLM 5.3, 5.0×took 7.6 s and 1.5 s | GLM 5.3, 34.5×cost $0.0081 and $0.0002 |
| A quarterly memo for the CEO | Both passed | GLM 5.3, 10.2×took 11.2 s and 1.1 s | GLM 5.3, 14.1×cost $0.0139 and $0.0010 |
| A study with a negative result | Both passed | GLM 5.3, 9.9×took 8.2 s and 0.8 s | GLM 5.3, 9.1×cost $0.0075 and $0.0008 |
| The region with the most revenue | Both passed | GLM 5.3, 4.1×took 8.5 s and 2.1 s | GLM 5.3, 29.8×cost $0.0117 and $0.0004 |
| Average order value in August | Both passed | GLM 5.3, 4.5×took 8.6 s and 1.9 s | GLM 5.3, 35.6×cost $0.0130 and $0.0004 |
| Revenue change from July to August | Both passed | GLM 5.3, 6.5×took 9.0 s and 1.4 s | GLM 5.3, 8.6×cost $0.0135 and $0.0016 |
| A median, filtered two ways | Both passed | GLM 5.3, 7.4×took 7.1 s and 1.0 s | GLM 5.3, 7.7×cost $0.0082 and $0.0011 |
| Correlation between ad spend and sign-ups | Both passed | GLM 5.3, 3.0×took 16.5 s and 5.6 s | GLM 5.3, 5.0×cost $0.0310 and $0.0062 |
| A late order | Both passed | GLM 5.3, 3.3×took 8.7 s and 2.6 s | GLM 5.3, 31.7×cost $0.0125 and $0.0004 |
| A return inside the window | Both passed | GLM 5.3, 4.4×took 6.9 s and 1.6 s | GLM 5.3, 32.4×cost $0.0076 and $0.0002 |
| A frustrated customer | Both passed | GLM 5.3, 4.2×took 9.8 s and 2.3 s | GLM 5.3, 35.2×cost $0.0110 and $0.0003 |
| A refund request outside the window | Both passed | GLM 5.3, 6.5×took 7.4 s and 1.1 s | GLM 5.3, 11.2×cost $0.0103 and $0.0009 |
| A message with a planted instruction | Both passed | GLM 5.3, 2.0×took 10.6 s and 5.3 s | GLM 5.3, 24.5×cost $0.0116 and $0.0005 |
| A delivery message into Spanish | Both passed | GLM 5.3, 7.9×took 11.8 s and 1.5 s | GLM 5.3, 68.5×cost $0.0157 and $0.0002 |
| A product description into French | Both passed | GLM 5.3, 6.2×took 9.1 s and 1.5 s | GLM 5.3, 47.7×cost $0.0141 and $0.0003 |
| A meeting note into German | Both passed | GLM 5.3, 8.2×took 13.0 s and 1.6 s | GLM 5.3, 85.4×cost $0.0158 and $0.0002 |
| Idioms into natural Japanese | Both passed | GLM 5.3, 6.0×took 10.3 s and 1.7 s | GLM 5.3, 10.1×cost $0.0118 and $0.0012 |
| A lease clause into Brazilian Portuguese | Both passed | GLM 5.3, 4.7×took 8.1 s and 1.7 s | GLM 5.3, 7.7×cost $0.0125 and $0.0016 |
| Customers in one country | Both passed | GLM 5.3, 6.2×took 4.9 s and 0.8 s | GLM 5.3, 22.0×cost $0.0029 and $0.0001 |
| Count orders by status | Both passed | GLM 5.3, 4.3×took 5.0 s and 1.2 s | GLM 5.3, 29.9×cost $0.0039 and $0.0001 |
| Revenue by category | Both passed | GLM 5.3, 6.0×took 7.4 s and 1.2 s | GLM 5.3, 35.8×cost $0.0074 and $0.0002 |
| Every customer, even those without orders | Both passed | GLM 5.3, 8.1×took 7.9 s and 1.0 s | GLM 5.3, 12.3×cost $0.0089 and $0.0007 |
| Monthly revenue with a running total | Both passed | GLM 5.3, 3.4×took 11.1 s and 3.2 s | GLM 5.3, 40.2×cost $0.0155 and $0.0004 |
| A fact from one section | Both passed | GLM 5.3, 6.1×took 5.3 s and 0.9 s | GLM 5.3, 17.2×cost $0.0045 and $0.0003 |
| Core hours and start times | Both passed | GLM 5.3, 11.6×took 5.8 s and 0.5 s | GLM 5.3, 7.2×cost $0.0052 and $0.0007 |
| Two sections in one answer | Both passed | GLM 5.3, 11.1×took 5.6 s and 0.5 s | GLM 5.3, 10.3×cost $0.0047 and $0.0005 |
| A later amendment changes the answer | Both passed | GLM 5.3, 6.7×took 8.6 s and 1.3 s | GLM 5.3, 16.7×cost $0.0099 and $0.0006 |
| A question the handbook doesn't answer | Both passed | GLM 5.3, 8.7×took 5.6 s and 0.6 s | GLM 5.3, 9.9×cost $0.0046 and $0.0005 |
| Pick the tool and work out the date | Both passed | GLM 5.3, 4.8×took 4.3 s and 0.9 s | GLM 5.3, 22.1×cost $0.0048 and $0.0002 |
| Convert a currency | Both passed | GLM 5.3, 4.7×took 5.3 s and 1.1 s | GLM 5.3, 31.8×cost $0.0044 and $0.0001 |
| Book a meeting from a sentence | Both passed | GLM 5.3, 4.2×took 7.1 s and 1.7 s | GLM 5.3, 12.2×cost $0.0068 and $0.0006 |
| Search, but don't book | Both passed | GLM 5.3, 8.7×took 4.7 s and 0.5 s | GLM 5.3, 11.2×cost $0.0061 and $0.0005 |
| Two calls with a unit conversion | Both passed | GLM 5.3, 9.8×took 6.9 s and 0.7 s | GLM 5.3, 8.3×cost $0.0063 and $0.0008 |
Gemini 3.1 Pro (preview) vs GLM 5.3 in our test runs
Gemini 3.1 Pro (preview) and GLM 5.3 on the same prompts, job by job: how many replies passed their check.
Based on 100 of our test runs on , through OpenRouter with the app's own prompt and settings. Updated .
| Job | Gemini 3.1 Pro (preview) | GLM 5.3 |
|---|---|---|
| Coding | 5 of 5 | 5 of 5 |
| Writing | 4 of 5 | 4 of 5 |
| Math | 5 of 5 | 5 of 5 |
| Summarization | 5 of 5 | 4 of 5 |
| Data analysis | 5 of 5 | 5 of 5 |
| Customer support | 5 of 5 | 5 of 5 |
| Translation | 5 of 5 | 5 of 5 |
| SQL | 5 of 5 | 5 of 5 |
| RAG and answering from documents | 5 of 5 | 5 of 5 |
| Agents and tool use | 5 of 5 | 5 of 5 |
| All jobs | 49 of 50 · 1 message each · $0.0107 a reply | 48 of 50 · 1 message each · $0.0007 a reply |
The same prompts, sent to both through llmwise's own pipeline and checked the same way: five for each job. A bold count is the one that passed more. Messages: what each reply counted as on Pro. Cost: what OpenRouter charged us per reply, on average. Every prompt, and how it's scored.
Where they differed most, summarization: both replies to a prompt only one of them passed.
An everyday prompt: “An article in three bullets”, in full.
Gemini 3.1 Pro
Passed: Graded 4.3 of 5 on average (lowest 4).
* Daily bike trips jumped to 2,300 and cyclist injuries dropped sharply. * Car traffic fell 14% with minor delays, while local business impacts were mixed. * The city council votes in November on spending €1.1 million to make the lanes permanent.
560 tokens in, 636 out (577 of them reasoning) · 8.0 s · $0.0088 · 1 message on Pro · answered by google/gemini-3.1-pro-preview via Google ·
GLM 5.3
Failed: Graded 4.3 of 5 on average (lowest 3); but 68 words, over the 60 allowed.
- Aldmoor ended its six-month protected bike lane trial on Market Street; the council votes in November on making them permanent. - Daily bike trips rose from about 900 to 2,300, cyclist injuries fell from nine to two, and car traffic dropped 14%, though rush-hour drives got slightly longer. - Businesses are split (27 reported more customers, 19 fewer), and permanence would cost an extra €1.1 million beyond the €410,000 spent.
539 tokens in, 218 out (118 of them reasoning) · 2.8 s · $0.0004 · 1 message on Pro · answered by z-ai/glm-5.3 via Morph ·
Gemini 3.1 Pro (preview) and GLM 5.3 on every plan
Whether the one-time free trial reaches each model, then each paid plan's messages on it.
| Plan | Price | Gemini 3.1 Pro (preview) | GLM 5.3 |
|---|---|---|---|
| Free | $0 | In the one-time trial of 5 messages | In the one-time trial of 5 messages |
| Pro | $20 a month | Up to 125 a month | Up to 250 a month |
| Max | $50 a month | Up to 400 a month | Up to 800 a month |
| Ultra | $100 a month | Up to 900 a month | Up to 1,800 a month |
| Studio | $200 a month | Up to 2,000 a month | Up to 4,000 a month |
Prices don't include tax, which is added where it applies and shown before you pay. A paid plan's month is one allowance shared by every model, so each monthly count is the most you get if all of it goes to that model. It renews each billing period; everyday models refill daily at 00:00 UTC. Long chats count more per reply. How pricing works.
Every limit is published. Paid plans also have a monthly fair-use limit on AI cost: Pro $7.50, Max $20, Ultra $42, Studio $85. Using every message on your plan at typical sizes stays under it; very large messages and heavy research use it faster. Every limit, explained.
What differs
Messages on Pro
GLM 5.3 gets twice as many messages: up to 250 messages a month on Pro, against up to 125 messages a month for Gemini 3.1 Pro (preview).
Context window
Both take up to 1.05M tokens of context. A chat in llmwise holds up to 200k tokens, which fits in either, so the difference shows only through each maker's own API.
Images and PDFs
GLM 5.3 doesn't read images. GLM 5.3 gets a PDF's text rather than the file itself.
On Free
Both are in the free trial.
Where messages go
Gemini 3.1 Pro (preview): Sent to Google directly. GLM 5.3: Served through OpenRouter, only by hosts that don't store or train on prompts. The maker's own endpoint is never asked.
Fact by fact
| Fact | Gemini 3.1 Pro (preview) | GLM 5.3 |
|---|---|---|
| Context window | 1.05M tokens | 1.05M tokens |
| Reads images | Yes | No |
| PDFs | Whole file | Text only |
| Reasoning | Yes | Yes |
| API price (September 2026) | $2.00 in / $12.00 out per million tokens | $1.40 in / $4.40 out per million tokens |
| A typical message at API prices (4,000 tokens in, 700 out) | $0.0164 | $0.0087 |
| A $10 top-up adds | 100 messages | 200 messages |
| Where a message goes | Sent to Google directly. | Served through OpenRouter, only by hosts that don't store or train on prompts. The maker's own endpoint is never asked. |
| If the provider fails | If Google fails before the reply starts (an overload, a server error, a dropped connection), llmwise sends the same request to Gemini 3.1 Pro (preview) through OpenRouter instead. | When one host is down, OpenRouter moves the request to another host that meets the same rules. |
| Anthropic's safety fallback | Doesn't apply | Doesn't apply |
Gemini 3.1 Pro (preview) or GLM 5.3?
From the facts above and our test runs: the rest is how their answers suit your work, which one chat can show you.
Pick Gemini 3.1 Pro (preview): it reads images; it reads a PDF as the whole file, charts and scans included.
Pick GLM 5.3: more messages for the money, up to 250 messages a month on Pro.
Each model's page, the families, and other pairs
Gemini 3.1 Pro (preview) vs GLM 5.3 is one pair of models. The page below covers the whole families.
- Gemini 3.1 Pro: price, limits and messages on every plan
- GLM 5.3: price, limits and messages on every plan
- Gemini vs GLM
- Claude Opus 5.5 vs Gemini 3.1 Pro (preview)
- Claude Sonnet 5 vs Gemini 3.1 Pro (preview)
- Claude Haiku 4.5 vs Gemini 3.1 Pro (preview)
- GLM 5.3 vs GLM 5.3 Flash
- Kimi K3 vs GLM 5.3
- DeepSeek V4 Pro vs GLM 5.3
- Every model-vs-model page
Gemini 3.1 Pro (preview) is a Gemini model; GLM 5.3 is a GLM model.
Questions
Is Gemini 3.1 Pro (preview) or GLM 5.3 cheaper in llmwise?
GLM 5.3 gets twice as many messages: up to 250 messages a month on Pro, against up to 125 messages a month for Gemini 3.1 Pro (preview). Every paid plan's monthly allowance is shared by all models, so each count is the most you get if it all goes to that model.
Can I try Gemini 3.1 Pro (preview) and GLM 5.3 for free?
Yes: both are in the free trial of 5 messages.
Which has the bigger context window, Gemini 3.1 Pro (preview) or GLM 5.3?
Neither: both take 1.05M tokens. A chat in llmwise holds up to 200k tokens, which fits in either, so the difference shows only through each maker's own API.
Can I use Gemini 3.1 Pro (preview) and GLM 5.3 in the same chat?
Yes. Pick Gemini 3.1 Pro (preview) for one message and GLM 5.3 for the next; the second sees the whole chat, including the first one's answer.
Which did better in your test runs, Gemini 3.1 Pro (preview) or GLM 5.3?
On the same 50 prompts, run on September 27, 2026, Gemini 3.1 Pro (preview) passed 49 and GLM 5.3 passed 48. The table on this page has each job, and every reply is published.
Claude, GPT, Gemini, DeepSeek, Grok, Kimi, and GLM, in one chat.
See what a message costs before you send it. Free is 5 messages to try; sign in with an email link, no password or card.