GLM 5V Turbo vs Mercury 2
GLM 5V Turbo leads Mercury 2 on the Artificial Analysis Intelligence Index, 23.5 to 10.8, and Mercury 2 costs 5.3x less per output token ($0.75 vs $4.00 per million). Updated October 22, 2026; 37 benchmarks have a result for both.
GLM 5V Turbo or Mercury 2: which to pick
Neither model has a coding score yet, so the two cannot be ranked on coding.
Pick GLM 5V Turbo for a larger context window (203K against 128K tokens) and work measured by IFBench, where it leads.
- Shared results
- 37
- GLM 5V Turbo only
- 28
- Mercury 2 only
- 5
- Like-for-like categories
- 7 of 9
Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.
Which one for your work
Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.
Coding
Vibe Coding Index, six public coding benchmarks
No call
Neither has a coding score yet.
One side not measured
Intelligence
AA Intelligence Index
GLM 5V Turbo
GLM 5V Turbo leads, 23.5 against 10.8.
Same board, both measured
Agentic work
AA Agentic Index
No call
Only Mercury 2 has a AA Agentic Index result, 1.6.
Directional only
Web design
Design Arena: websites
GLM 5V Turbo
GLM 5V Turbo leads, 1230 against 1036.
Same board, both measured
Long documents
Listed context window
GLM 5V Turbo
GLM 5V Turbo takes 203K tokens against 128K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Mercury 2
GLM 5V Turbo $0.0032, Mercury 2 $0.0006 per turn.
List prices
At a glance
- Coding index
- GLM 5V Turbo not benchmarked, Mercury 2 not benchmarked.
- Widest category
- Agentic work, 27.8 points apart on average over 1 shared benchmark.
- Widest single gap
- LMArena WebDev: React: GLM 5V Turbo 1386 against Mercury 2 1160, 37.8 points apart on a 0 to 100 scale.
- Output price
- GLM 5V Turbo $4.00 against Mercury 2 $0.75 per million output tokens, 5.3x apart.
- Context window
- GLM 5V Turbo takes 203K tokens, Mercury 2 128K.
Benchmark by benchmark
First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.
| Category | GLM 5V Turbo | Bars | Mercury 2 | Ties |
|---|---|---|---|---|
| Coding | 6 | 0 | ||
| Intelligence | 1 | 0 | ||
| Agentic work | 1 | 0 | ||
| Reasoning | 4 | 0 | 1 tie | |
| Knowledge | 3 | 0 | ||
| Web design | 8 | 0 | ||
| General | 12 | 1 | ||
| All shared boards | 35 | 1 | 1 tie |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index60
| Benchmark | GLM 5V Turbo | Mercury 2 | Leader |
|---|---|---|---|
| LMArena WebDev | 1402 | 1171 | GLM 5V Turbo |
| AA Coding Index | Not measured | 31.1 | Only Mercury 2 measured |
| SciCode | Not measured | 37.7% | Only Mercury 2 measured |
| Terminal-Bench Hard (Artificial Analysis run) | 32.6% | 26.5% | GLM 5V Turbo |
| WeirdML | Not measured | 43.2% | Only Mercury 2 measured |
| ALE-Bench | Not measured | 785.6 | Only Mercury 2 measured |
| LMArena Text: coding | 1466 | 1390 | GLM 5V Turbo |
| LMArena Text: software and IT | 1460 | 1385 | GLM 5V Turbo |
| LMArena WebDev: React | 1386 | 1160 | GLM 5V Turbo |
| LMArena WebDev: HTML | 1356 | 1199 | GLM 5V Turbo |
| LMArena WebDev: from an image | 1425 | Not measured | Only GLM 5V Turbo measured |
| Neither model has a result on the other 28 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
| Benchmark | GLM 5V Turbo | Mercury 2 | Leader |
|---|---|---|---|
| AA Intelligence Index | 23.5 | 10.8 | GLM 5V Turbo |
| Neither model has a result on the other 1 board here | |||
Agentic workLike-for-likePublic boards, shown as published, kept out of the index10
| Benchmark | GLM 5V Turbo | Mercury 2 | Leader |
|---|---|---|---|
| AA Agentic Index | Not measured | 1.6 | Only Mercury 2 measured |
| Design Arena: agents building web apps | 1124 | Not measured | Only GLM 5V Turbo measured |
| Design Arena: agents building full-stack apps | 1149 | Not measured | Only GLM 5V Turbo measured |
| Design Arena: agents building mobile apps | 1134 | Not measured | Only GLM 5V Turbo measured |
| Design Arena: agents building Android apps | 1267 | Not measured | Only GLM 5V Turbo measured |
| Design Arena: agents building Godot games | 957 | Not measured | Only GLM 5V Turbo measured |
| Design Arena: agents building games | 1102 | Not measured | Only GLM 5V Turbo measured |
| Design Arena: HTML slides | 1070 | Not measured | Only GLM 5V Turbo measured |
| Design Arena: PowerPoint slides | 1127 | Not measured | Only GLM 5V Turbo measured |
| τ²-Bench Telecom | 98.5% | 70.8% | GLM 5V Turbo |
| Neither model has a result on the other 31 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index40
| Benchmark | GLM 5V Turbo | Mercury 2 | Leader |
|---|---|---|---|
| GPQA Diamond (Artificial Analysis run) | 80.9% | 77.0% | GLM 5V Turbo |
| Humanity's Last Exam (Artificial Analysis run) | 17.1% | 17.1% | Tie |
| LMArena Text: hard prompts | 1443 | 1362 | GLM 5V Turbo |
| LMArena Text: expert | 1453 | 1358 | GLM 5V Turbo |
| LMArena Text: hard prompts in English | 1456 | 1374 | GLM 5V Turbo |
| LMArena Vision: diagrams | 1286 | Not measured | Only GLM 5V Turbo measured |
| LMArena Vision: homework | 1273 | Not measured | Only GLM 5V Turbo measured |
| Neither model has a result on the other 15 boards here | |||
MathDirectional onlyPublic boards, shown as published, kept out of the index2 boards, none shared
| Benchmark | GLM 5V Turbo | Mercury 2 | Leader |
|---|---|---|---|
| LMArena Text: math | 1442 | Not measured | Only GLM 5V Turbo measured |
| LMArena Text: mathematical work | 1447 | Not measured | Only GLM 5V Turbo measured |
| Neither model has a result on the other 11 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index30
| Benchmark | GLM 5V Turbo | Mercury 2 | Leader |
|---|---|---|---|
| LMArena Text: science | 1448 | 1343 | GLM 5V Turbo |
| LMArena Text: medicine and healthcare | 1433 | 1363 | GLM 5V Turbo |
| LMArena Text: legal and government | 1436 | Not measured | Only GLM 5V Turbo measured |
| LMArena Text: business and finance | 1435 | 1349 | GLM 5V Turbo |
| Neither model has a result on the other 14 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index80
| Benchmark | GLM 5V Turbo | Mercury 2 | Leader |
|---|---|---|---|
| Design Arena: websites | 1230 | 1036 | GLM 5V Turbo |
| Design Arena: UI components | 1210 | 996 | GLM 5V Turbo |
| Design Arena: game dev | 1218 | 984 | GLM 5V Turbo |
| Design Arena: data viz | 1202 | 1009 | GLM 5V Turbo |
| Design Arena: 3D | 1208 | 982 | GLM 5V Turbo |
| Design Arena: all code categories | 1228 | 1021 | GLM 5V Turbo |
| Design Arena: SVG | 1151 | 998 | GLM 5V Turbo |
| Design Arena: ASCII art | 1117 | 988 | GLM 5V Turbo |
| Neither model has a result on the other 1 board here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index121
| Benchmark | GLM 5V Turbo | Mercury 2 | Leader |
|---|---|---|---|
| IFBench | 61.1% | 69.8% | Mercury 2 |
| Long context reasoning (AA-LCR) | 70.3% | 43.7% | GLM 5V Turbo |
| LMArena Text | 1437 | 1354 | GLM 5V Turbo |
| LMArena Text: instruction following | 1423 | 1328 | GLM 5V Turbo |
| LMArena Text: creative writing | 1417 | 1286 | GLM 5V Turbo |
| LMArena Vision | 1264 | Not measured | Only GLM 5V Turbo measured |
| LMArena Text: English | 1454 | 1378 | GLM 5V Turbo |
| LMArena Text: non-English | 1420 | 1330 | GLM 5V Turbo |
| LMArena Text: Chinese | 1491 | 1414 | GLM 5V Turbo |
| LMArena Text: German | 1422 | Not measured | Only GLM 5V Turbo measured |
| LMArena Text: Korean | 1397 | Not measured | Only GLM 5V Turbo measured |
| LMArena Text: French | 1443 | Not measured | Only GLM 5V Turbo measured |
| LMArena Text: Spanish | 1452 | Not measured | Only GLM 5V Turbo measured |
| LMArena Text: Russian | 1432 | 1304 | GLM 5V Turbo |
| LMArena Text: Polish | 1432 | Not measured | Only GLM 5V Turbo measured |
| LMArena Text: multi-turn | 1431 | 1357 | GLM 5V Turbo |
| LMArena Text: longer queries | 1438 | 1329 | GLM 5V Turbo |
| LMArena Text: writing and language | 1420 | 1300 | GLM 5V Turbo |
| LMArena Text: entertainment and media | 1407 | 1314 | GLM 5V Turbo |
| LMArena Vision: English | 1274 | Not measured | Only GLM 5V Turbo measured |
| LMArena Vision: Chinese | 1329 | Not measured | Only GLM 5V Turbo measured |
| LMArena Vision: reading text | 1270 | Not measured | Only GLM 5V Turbo measured |
| LMArena Vision: humor | 1268 | Not measured | Only GLM 5V Turbo measured |
| LMArena Vision: captioning | 1264 | Not measured | Only GLM 5V Turbo measured |
| LMArena Vision: recognizing things | 1241 | Not measured | Only GLM 5V Turbo measured |
| LMArena Vision: creative writing | 1252 | Not measured | Only GLM 5V Turbo measured |
| LMArena Document | 1416 | Not measured | Only GLM 5V Turbo measured |
| Neither model has a result on the other 19 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | GLM 5V Turbo | Mercury 2 | Leader |
|---|---|---|---|
| Neither model has a result on 5 boards here | |||
What each workload costs
Three fixed token mixes at each model's listed price, so per-token rates become a bill.
Chat turn
1K input + 500 output tokens
Mercury 2 costs less
Repository review
50K input + 3K output tokens
Mercury 2 costs less
Agent loop
200K input + 10K output tokens
Mercury 2 costs less
Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.
Specification differences
The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.
| Specification | Z.ai GLM 5V Turbo | Inception Mercury 2 |
|---|---|---|
| Maker | Z.ai | Inception |
| Weights | No public weights listed | No public weights listed |
| Released | April 1, 2026 | March 4, 2026 |
| Context window | 203K | 128K |
| Input $/Mtok | $1.20 | $0.25 |
| Output $/Mtok | $4.00 | $0.75 |
| Coding index | Not benchmarked | Not benchmarked |
| Independent measurements behind it | 1 | 1 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is GLM 5V Turbo better than Mercury 2 for coding?
Neither model has a coding score yet, so the two cannot be ranked on coding. Pick GLM 5V Turbo for a larger context window (203K against 128K tokens) and work measured by IFBench, where it leads.
Which is cheaper, GLM 5V Turbo or Mercury 2?
GLM 5V Turbo costs $1.20 per million input tokens and $4.00 per million output tokens; Mercury 2 costs $0.25 and $0.75. Cost per solved task is known for neither of them.
Which has the bigger context window, GLM 5V Turbo or Mercury 2?
GLM 5V Turbo, with 203K tokens against 128K.
How many benchmarks is the GLM 5V Turbo vs Mercury 2 comparison based on?
37 benchmarks have a result for both models as of October 22, 2026. GLM 5V Turbo's coding index rests on 1 independent benchmark and Mercury 2's on 1. Where only one model has a result, the page says so instead of naming a winner.