Model comparison
GLM-5V-Turbo vs Mercury 2
GLM-5V-Turbo is the stronger model overall, scoring 43.8 to 39.1 on the Noometry Index. Mercury 2 costs 5.1× less per token, which makes it the better buy when GLM-5V-Turbo's lead doesn't matter for your workload.
Last verified . 12 shared benchmarks.
Summary
- They share 12 benchmarks with published results for both. GLM-5V-Turbo scores higher in 7 categories and Mercury 2 in 0 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where GLM-5V-Turbo leads 62.5 to 53.8.
- Mercury 2 is cheaper at $0.25 / $0.75 per million input/output tokens, against $1.20 / $4 for GLM-5V-Turbo.
- GLM-5V-Turbo accepts more context: 200K tokens versus 128K.
Side by side
| GLM-5V-Turbo | Mercury 2 | |
|---|---|---|
| Provider | Z.ai (Zhipu) | Inception |
| Noometry Index | 43.8 | 39.1 |
| Released | 2026-04-01 | 2026-02-20 |
| Weights | Proprietary | Proprietary |
| Context window | 200K | 128K |
| Max output | 131K | 50K |
| Input $ / M tokens | $1.20 | $0.25 |
| Output $ / M tokens | $4 | $0.75 |
| Results tracked | 19 | 17 |
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Category by category
Coding GLM-5V-Turbo leads
GLM-5V-Turbo: 42.1 (#111), Mercury 2: 33.5 (#255)
| Benchmark | GLM-5V-Turbo | Mercury 2 |
|---|---|---|
| LMArena WebDev | 1401 | 1171 |
| LMArena Coding | 1466 | 1391 |
| SciCode | — | 38.7% |
| WeirdML | — | 43.2% |
| ALE-Bench | — | 785.58 |
Reasoning GLM-5V-Turbo leads
GLM-5V-Turbo: 29.7 (#89), Mercury 2: 23.8 (#170)
| Benchmark | GLM-5V-Turbo | Mercury 2 |
|---|---|---|
| LMArena Hard Prompts | 1443 | 1362 |
| CritPt | — | 0.8% |
Math Not comparable
GLM-5V-Turbo: 39.4 (#106), Mercury 2: —
| Benchmark | GLM-5V-Turbo | Mercury 2 |
|---|---|---|
| LMArena Math | 1441 | — |
Knowledge GLM-5V-Turbo leads
GLM-5V-Turbo: 40.6 (#117), Mercury 2: 36.2 (#172)
| Benchmark | GLM-5V-Turbo | Mercury 2 |
|---|---|---|
| LMArena Expert | 1452 | 1358 |
| Vectara Hallucination Rate | — | 12.3% |
Multimodal Not comparable
GLM-5V-Turbo: 40.9 (#42), Mercury 2: —
| Benchmark | GLM-5V-Turbo | Mercury 2 |
|---|---|---|
| LMArena Vision | 1264 | — |
| LMArena Document | 1416 | — |
Multilingual GLM-5V-Turbo leads
GLM-5V-Turbo: 53.0 (#73), Mercury 2: 46.6 (#157)
| Benchmark | GLM-5V-Turbo | Mercury 2 |
|---|---|---|
| LMArena Non-English | 1420 | 1331 |
| LMArena Chinese | 1488 | 1417 |
| LMArena Russian | 1431 | 1304 |
| LMArena French | 1444 | — |
| LMArena German | 1423 | — |
| LMArena Korean | 1396 | — |
| LMArena Spanish | 1450 | — |
Instruction Following GLM-5V-Turbo leads
GLM-5V-Turbo: 75.0 (#80), Mercury 2: 70.2 (#165)
| Benchmark | GLM-5V-Turbo | Mercury 2 |
|---|---|---|
| LMArena Instruction Following | 1423 | 1329 |
Long Context GLM-5V-Turbo leads
GLM-5V-Turbo: 44.0 (#80), Mercury 2: 40.5 (#154)
| Benchmark | GLM-5V-Turbo | Mercury 2 |
|---|---|---|
| LMArena Longer Query | 1438 | 1330 |
Writing & Preference GLM-5V-Turbo leads
GLM-5V-Turbo: 62.5 (#73), Mercury 2: 53.8 (#155)
| Benchmark | GLM-5V-Turbo | Mercury 2 |
|---|---|---|
| LMArena Text | 1437 | 1355 |
| LMArena Creative Writing | 1416 | 1289 |
| LMArena Multi-Turn | 1432 | 1358 |
Frequently asked questions
Is GLM-5V-Turbo better than Mercury 2?
GLM-5V-Turbo is the stronger model overall, scoring 43.8 to 39.1 on the Noometry Index. Mercury 2 costs 5.1× less per token, which makes it the better buy when GLM-5V-Turbo's lead doesn't matter for your workload.
Which is cheaper, GLM-5V-Turbo or Mercury 2?
Mercury 2 is cheaper. It lists at $0.25 per million input tokens and $0.75 per million output tokens; GLM-5V-Turbo lists at $1.20 and $4.
Is GLM-5V-Turbo or Mercury 2 better for coding?
GLM-5V-Turbo scores higher on coding benchmarks: 42.1 versus 33.5 in the Noometry coding category.
Which has the bigger context window?
GLM-5V-Turbo does, with 200K tokens against 128K.
How many benchmarks do GLM-5V-Turbo and Mercury 2 share?
12 benchmarks have published results for both models. GLM-5V-Turbo has 19 scored results on Noometry and Mercury 2 has 17.