GLM 5.3 Flash · Math
GLM 5.3 Flash for math: our test runs
GLM 5.3 Flash ran our 5 math prompts in llmwise, through the same pipeline your messages take. Here's every reply as it came, whether it passed, what it cost and what it counts as on Pro, next to the other models.
Based on 5 of our test runs on , through OpenRouter with the app's own prompt and settings. Updated .
Short answer
In our test runs on September 27, 2026, GLM 5.3 Flash passed 5 of 5 of our math prompts (both hard ones): tied 1st of 20 models. Each reply counted as 1 message on Pro, where it has 60 a day, and cost $0.0002 to run on average.
Prompt by prompt
Each of the 5 math prompts, and how GLM 5.3 Flash's reply did.
| Prompt | Result | Cost | Time |
|---|---|---|---|
| A discount, then sales taxEveryday | Passed: Final answer 66: right. | $0.0001 | 2.4 s |
| Pens at 3 for $4Everyday | Passed: Final answer Buy three packs of 3 plus one single pen, costing 13.50: right. | $0.0003 | 14.6 s |
| Compound interest over three yearsEveryday | Passed: Final answer 315.25: right. | $0.0002 | 4.9 s |
| Four-digit numbers whose digits sum to 9Hard | Passed: Final answer 165: right. | $0.0001 | 2.7 s |
| The highest of three dice is a 5Hard | Passed: Final answer 61/216: right. | $0.0001 | 0.9 s |
Every math reply from GLM 5.3 Flash
A discount, then sales tax
An everyday prompt: “A discount, then sales tax”, in full.
Passed: Final answer 66: right.
Discount: 80 × 0.75 = $60 Tax: 60 × 1.10 = $66 Final answer: $66
416 tokens in, 48 out (15 of them reasoning) · 2.4 s · $0.0001 · 1 message on Pro · answered by z-ai/glm-5.3-flash via AtlasCloud ·
Pens at 3 for $4
An everyday prompt: “Pens at 3 for $4”, in full.
Passed: Final answer Buy three packs of 3 plus one single pen, costing 13.50: right.
**Working:** - 10 = 3a + b, where a = packs of 3 ($4 each), b = singles ($1.50 each) - a=3, b=1: 3×$4 + $1.50 = **$13.50** - a=2, b=4: $8 + $6.00 = $14.00 - a=1, b=7: $4 + $10.50 = $14.50 - a=0, b=10: $15.00 Buying 12 pens (4 packs) would cost $16 but exceeds 10, so it doesn't qualify. Final answer: Buy three packs of 3 plus one single pen, costing $13.50
418 tokens in, 393 out (232 of them reasoning) · 14.6 s · $0.0003 · 1 message on Pro · answered by z-ai/glm-5.3-flash via Wafer ·
Compound interest over three years
An everyday prompt: “Compound interest over three years”, in full.
Passed: Final answer 315.25: right.
**Working:** - Formula: A = P(1 + r)ⁿ = 2000 × (1.05)³ - (1.05)³ = 1.157625 - A = 2000 × 1.157625 = $2,315.25 - Interest earned = 2,315.25 − 2,000 = $315.25 Final answer: $315.25
417 tokens in, 165 out (71 of them reasoning) · 4.9 s · $0.0002 · 1 message on Pro · answered by z-ai/glm-5.3-flash via Wafer ·
Four-digit numbers whose digits sum to 9
A hard prompt: “Four-digit numbers whose digits sum to 9”, in full.
Passed: Final answer 165: right.
We need digits d₁+d₂+d₃+d₄ = 9 with d₁ ≥ 1 (thousands digit), others 0–9 (no digit can exceed 9 since the sum is 9, so that constraint is automatic). Substitute e₁ = d₁ − 1 ≥ 0: e₁+d₂+d₃+d₄ = 8. Number of nonnegative solutions: C(8+4−1, 4−1) = C(11,3) = 165. Final answer: 165
393 tokens in, 171 out (54 of them reasoning) · 2.7 s · $0.0001 · 1 message on Pro · answered by z-ai/glm-5.3-flash via Together ·
The highest of three dice is a 5
A hard prompt: “The highest of three dice is a 5”, in full.
Passed: Final answer 61/216: right.
P(max ≤ 5) = (5/6)³ = 125/216, P(max ≤ 4) = (4/6)³ = 64/216. So P(max = 5) = 125/216 − 64/216 = 61/216. Final answer: 61/216
409 tokens in, 97 out (27 of them reasoning) · 0.9 s · $0.0001 · 1 message on Pro · answered by z-ai/glm-5.3-flash via Together ·
How it compares on math
GLM 5.3 Flash beside the job's picks among every model. 19 models share the hard-problems pick, GLM 5.3 Flash among them.
| Model | Passed | On Pro | Cost per reply |
|---|---|---|---|
| GLM 5.3Our pick: hard problems (shared), best value | 5 of 5 | 250 a month on Pro | $0.0004 |
| Claude Haiku 5.5Our pick: hard problems (shared), everyday | 5 of 5 | 60 a day on Pro | $0.0001 |
| GLM 5.3 FlashOur pick: hard problems (shared) | 5 of 5 | 60 a day on Pro | $0.0002 |
Every limit is published. Paid plans also have a monthly fair-use limit on AI cost: Plus $3.75, 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.
GLM 5.3 Flash next to each model on math
GLM 5.3 Flash against each model on the same 5 math prompts. One run each, through OpenRouter: a wait depends on the provider and the load that day, so a lead under 10% counts as close.
Against Claude Fable 5.1: GLM 5.3 Flash answered 1.7× sooner (2.7 s to 4.6 s), cost 77.5× less, and passed 5 of 5 to its 5.
Against Claude Opus 5.5: GLM 5.3 Flash answered 1.4× sooner (2.7 s to 3.9 s), cost 39.7× less, and passed 5 of 5 to its 5.
Against Claude Sonnet 5.5: GLM 5.3 Flash answered 1.6× later (2.7 s to 1.7 s), cost 16.4× less, and passed 5 of 5 to its 5.
Against Claude Sonnet 5: GLM 5.3 Flash answered 1.5× sooner (2.7 s to 3.9 s), cost 22.0× less, and passed 5 of 5 to its 5.
Against Claude Haiku 5.5: GLM 5.3 Flash answered 1.6× later (2.7 s to 1.7 s), cost within 10% of it, and passed 5 of 5 to its 5.
Against Claude Haiku 4.5: GLM 5.3 Flash answered 1.2× later (2.7 s to 2.2 s), cost 10.2× less, and passed 5 of 5 to its 5.
Against GPT-6 Astra: GLM 5.3 Flash answered within 10% of its time (2.7 s to 2.6 s), cost 56.9× less, and passed 5 of 5 to its 5.
Against GPT-6.1 Sol: GLM 5.3 Flash answered 1.5× later (2.7 s to 1.8 s), cost 5.7× less, and passed 5 of 5 to its 5.
Against GPT-6 Sol: GLM 5.3 Flash answered 1.2× later (2.7 s to 2.2 s), cost 12.1× less, and passed 5 of 5 to its 5.
Against GPT-6 Luna: GLM 5.3 Flash answered 1.2× later (2.7 s to 2.2 s), cost 1.5× more, and passed 5 of 5 to its 4. Only GLM 5.3 Flash passed Pens at 3 for $4.
Against Gemini 4 Argon: GLM 5.3 Flash answered 1.6× sooner (2.7 s to 4.4 s), cost 10.3× less, and passed 5 of 5 to its 5.
Against Gemini 3.1 Pro (preview): GLM 5.3 Flash answered 3.1× sooner (2.7 s to 8.3 s), cost 66.7× less, and passed 5 of 5 to its 5.
Against Gemini 3.8 Flash: GLM 5.3 Flash answered 1.7× sooner (2.7 s to 4.7 s), cost 9.5× less, and passed 5 of 5 to its 5.
Against DeepSeek V4.1 Flash: GLM 5.3 Flash answered 2.9× later (2.7 s to 0.9 s), cost 1.7× less, and passed 5 of 5 to its 5.
Against DeepSeek V4 Pro: GLM 5.3 Flash answered within 10% of its time (2.7 s to 2.7 s), cost 5.8× less, and passed 5 of 5 to its 5.
Against Grok 4.7: GLM 5.3 Flash answered 4.3× sooner (2.7 s to 11.7 s), cost 48.1× less, and passed 5 of 5 to its 5.
Against Kimi K3: GLM 5.3 Flash answered 2.0× sooner (2.7 s to 5.4 s), cost 24.9× less, and passed 5 of 5 to its 5.
Against GLM 5.3: GLM 5.3 Flash answered 2.9× later (2.7 s to 0.9 s), cost 2.4× less, and passed 5 of 5 to its 5.
Against Mistral Large 4: GLM 5.3 Flash answered 1.9× sooner (2.7 s to 5.1 s), cost 12.2× less, and passed 5 of 5 to its 5.
How these runs were done
Final answer. Automatic. The reply's last “Final answer:” line must hold the right value.
GLM 5.3 Flash, and math, elsewhere
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- Analyze a CSV with code: the prompt, and its price
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- Our test runs: 50 prompts on every model
Questions
Is GLM 5.3 Flash good for math?
In our test runs it passed 5 of 5 math prompts, tied 1st of the 20 models in llmwise. Every reply is on this page, so you can judge them yourself.
How many of my messages does a math reply from GLM 5.3 Flash use?
1 message each on Pro, where it has 60 a day on Pro. The price of a message is fixed and shown before you send it, however long the reply.
How were these runs done?
The same way for every model: each prompt sent through llmwise's own pipeline, each reply checked the same way. The methods page has every prompt and how each is scored.
Claude, GPT, Gemini, DeepSeek, Grok, Kimi, GLM, and Mistral, 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.