Model vs model
GLM 5.3 Flash vs Hy3
Pick GLM 5.3 Flash for agentic work, terminal tasks, coding and image inputs. It leads Hy3 on every shared benchmark, scoring 41.8 on the Intelligence Index against 25.3, and costs slightly less at $0.24 per 1M tokens blended against $0.25. Hy3, from Tencent, suits teams already committed to Tencent's stack.
At a glance
Longer bar means the bigger number.
Blended price · per 1M tokens, lower is better
Intelligence Index · Artificial Analysis, higher is better
Context window · tokens it can read at once
Where they sit among all 44 models
GLM 5.3 Flash ranks 15th of the 43 models with an Intelligence Index, Hy3 28th. Up and to the left is smarter for less money. Hover or tap a dot for its numbers, then click it to compare that model with GLM 5.3 Flash.
Which one to pick
Pick GLM 5.3 Flash if
- you want the lower bill ($0.24 vs $0.25 per 1M tokens blended)
- you want the higher overall score (41.8 vs 25.3)
- you care about Terminal-Bench 4.0 (terminal tasks): 32.8 vs 0.5
- you care about agentic work: 50.9 vs 24.1
How smart is each one?
Of the 14 scores both models have, GLM 5.3 Flash is ahead on every one.
Every intelligence score we have
Out of 100, higher is better. GLM 5.3 Flash Hy3
Overall
Intelligence Index
41.825.3
By area
Coding
71.558.8Agentic work
50.924.1
By field of work
Finance & accounting
4227.3Legal
39.926.5Healthcare & medicine
38.9Hy3: not scored yet
Economics
48.935.2Engineering
43.826.7Strategy & operations
45.123.9
Benchmarks
Hard reasoning · Humanity's Last Exam
39.933.5Science · GPQA Diamond
91.2 · 89.7Scientific coding · SciCode
51.648.6Terminal tasks · Terminal-Bench 4.0
32.80.5Tool use · τ-Bench Banking
47.222.9Long documents · AA-LCR
8079
Our tests
Hallucination test · our test, higher means it made up less
91.7Hy3: not scored yet
Rule that has to last 4 turns · our test, % of tries passed
0Hy3: not scored yet
Three bullets, no letter e · our test, % of tries passed
33Hy3: not scored yet
The specs
| Spec | GLM 5.3 Flash | Hy3 |
|---|---|---|
| Input price | $0.15 per 1M | $0.14 per 1M |
| Output price | $0.50 per 1M | $0.58 per 1M |
| Cost per test task | $0.2836 | Not tested |
| Context window | 1M | 262K |
| Max output | 131K | 262K |
| Accepts | Text, Image | Text |
| Open weights | Yes | Yes |
| Lab | Z.ai | Tencent |
| Released | Aug 2026 | Jul 2026 |
| Knowledge cutoff | Not published | Not published |
Blended price weighs 3 parts input to 1 part output. List prices from models.dev. Cost per test task from Artificial Analysis.
Questions
Is GLM 5.3 Flash or Hy3 cheaper?
GLM 5.3 Flash is cheaper. It charges $0.15 per 1M input tokens and $0.50 per 1M output tokens, against $0.14 and $0.58 for Hy3. Blended 3 parts input to 1 part output, that is $0.24 against $0.25 per 1M tokens.
Which is smarter, GLM 5.3 Flash or Hy3?
GLM 5.3 Flash scores higher on the Artificial Analysis Intelligence Index, 41.8 against 25.3 for Hy3. The biggest differences are on Terminal-Bench 4.0 (32.8 vs 0.5) and Agentic work (50.9 vs 24.1).
Which has the longer context window?
GLM 5.3 Flash accepts 1M tokens, against 262K for Hy3.
Can I compare GLM 5.3 Flash and Hy3 on my own prompt?
Yes. ModelCompare sends one prompt to both models at once and shows each answer side by side with what it cost. You can try it free without an account.
Related comparisons
Where the numbers come from
Intelligence Index and benchmark scores are from Artificial Analysis, at each model’s highest effort, except SimpleQA, which is from Epoch AI, and the Uncensored score, which is from the UGI Leaderboard. The hallucination test is ours: questions with one exact answer, fake evidence pushed against right answers and requests that tempt a model to name packages that don’t exist. Prices are list prices from models.dev. Example answers come from our own test runs. Updated October 25, 2026.