GLM 5.3 Flash
ox-alpha out of stealth! GLM-5.3 Flash is Z.ai's first natively multimodal GLM-5 model, with 320B total parameters and just 18B active parameters for efficient coding, agentic work, and precise 1M-token context. Its hybrid sparse-and-linear attention architecture helps it outperform GLM-5.2 at one-tenth the price while approaching Claude Opus 4.8 on coding and agentic benchmarks.
- Reasoning
- Vision
- Video Input
- Tool Calling
- Structured Output
Added Aug 26, 2026
Model weightsPricing
Auto routing · per 1M tokens- Input
- $0.10
- Output
- $0.30
- Cache read
- $0.025
Specifications
- Context window
- 1M
- Max output
- 131.1K
- Parameters
- 320B / 18B
- Total / active
Benchmarks
Benchmarks
Sourced from LMArena.
Arena Score
1475.3
Overall Rank
#36 / 421
Votes
51,019
Confidence Interval
1470.8 - 1479.7
Category Scores
Coding
#28 / 416
12,885 votes
1526.3
Math
#11 / 404
2,537 votes
1504.8
Longer Query
#52 / 399
22,349 votes
1479.7
Creative Writing
#67 / 419
10,973 votes
1434.8
Instruction Following
#35 / 421
17,601 votes
1473.6
Hard Prompts
#35 / 421
32,572 votes
1500.4
Additional Categories22
Spanish
#25 / 304
1,909 votes
1475.1
Chinese
#26 / 395
3,886 votes
1528.6
Industry Software And It Services
#26 / 421
18,959 votes
1515.0
French
#29 / 301
1,914 votes
1498.9
Industry Medicine And Healthcare
#30 / 391
3,402 votes
1493.4
Expert
#31 / 371
4,968 votes
1510.9
Hard Prompts English
#34 / 419
11,880 votes
1501.8
Industry Mathematical
#35 / 402
2,862 votes
1489.9
Japanese
#37 / 288
943 votes
1460.4
Non English
#38 / 421
32,717 votes
1463.9
English
#40 / 421
18,299 votes
1481.5
Industry Life And Physical And Social Science
#41 / 419
8,211 votes
1490.6
Industry Business And Management And Financial Operations
#44 / 414
9,129 votes
1470.8
Exclude Ties
#45 / 421
37,816 votes
1483.6
Korean
#45 / 289
832 votes
1430.3
Russian
#47 / 385
7,564 votes
1471.7
Multi Turn
#51 / 419
7,811 votes
1476.3
Industry Legal And Government
#52 / 393
4,007 votes
1475.3
Industry Writing And Literature And Language
#55 / 420
14,287 votes
1452.3
Industry Entertainment And Sports And Media
#56 / 419
12,959 votes
1438.8
German
#64 / 320
865 votes
1459.4
Polish
#72 / 243
897 votes
1455.4
Published 2026-11-11 · Matched as GLM-5.3-Flash · CC BY 4.0
LMArena DatasetLeaderboard results
| Benchmark | Score | Rank on NanoGPT |
|---|---|---|
Epoch AI Benchmarking Hub Epoch AI data, CC BY 4.0 · Updated Nov 15, 2026 | ||
Epoch Capabilities Index | 153.8 | #50 of 115 |
FrontierMath v2 (Tiers 1–3) | 55.8% | #49 of 83 |
GPQA Diamond | 90.2% | #43 of 119 |
FrontierMath v2 (Tier 4) | 17.1% | #52 of 67 |
OTIS Mock AIME 2024–2025 | 93.9% | #48 of 121 |
Chess Puzzles | 21.0% | #62 of 82 |
Mystery Game Puzzles | 8.0% | #71 of 77 |
Filtered and ranked to models on NanoGPT.
Providers
Choose or restrict providers with the API. Provider-selection prices include the selection markup. Provider selection guide · Pricing API (JSON, USD per 1K tokens)
 | $0.10 | $0.30 | $0.025 | N/A | N/A |
| $0.10 | $0.30 | $0.025 | N/A | N/A |
| $0.157$0.0236 | $0.525$0.0787 | $0.0315$0.0047 | N/A | N/A | |
| $0.0315 | $0.189 | $0.0315 | N/A | N/A | |
| $0.0419 | $0.0823 | $0.0315 | N/A | N/A | |
| $0.0462 | $0.315 | $0.0168 | N/A | N/A | |
| $0.0473 | $0.231 | $0.0315 | N/A | N/A | |
| $0.0525 | $0.21 | $0.0158 | N/A | N/A | |
| $0.0525 | $0.21 | $0.0315 | N/A | N/A | |
| $0.0578 | $0.21 | N/A | N/A | N/A | |
| $0.0945$0.063 | $0.315$0.21 | $0.0189$0.0126 | N/A | N/A | |
| $0.0682 | $0.189 | $0.0341 | N/A | N/A | |
| $0.0787 | $0.263 | $0.0158 | N/A | N/A | |
| $0.0866 | $0.289 | $0.0173 | N/A | N/A | |
| $0.0882 | $0.294 | $0.0176 | N/A | N/A | |
| $0.0924 | $0.263 | $0.0263 | N/A | N/A | |
| $0.157$0.0929 | $0.525$0.31 | $0.0315$0.0186 | N/A | N/A | |
| $0.0998 | $0.347 | $0.0168 | N/A | N/A | |
| $0.102 | $0.341 | $0.0205 | N/A | N/A | |
| $0.105 | $0.42 | $0.0315 | N/A | N/A | |
| $0.126 | $0.399 | $0.021 | N/A | N/A | |
| $0.126 | $0.472 | $0.0315 | N/A | N/A | |
| $0.126 | $0.42 | $0.0252 | N/A | N/A | |
| $0.126 | $0.42 | $0.0252 | N/A | N/A | |
| $0.129 | $0.412 | N/A | N/A | N/A | |
| $0.136 | $0.467 | $0.0315 | N/A | N/A | |
| $0.142 | $0.472 | $0.0284 | N/A | N/A | |
| $0.157$0.142 | $0.525$0.473 | $0.0315$0.0284 | N/A | N/A | |
| $0.157 | $0.525 | $0.0787 | N/A | N/A | |
| $0.157 | $0.525 | $0.0315 | N/A | N/A | |
| $0.157 | $0.525 | $0.0315 | N/A | N/A | |
| $0.157 | $0.525 | $0.0315 | N/A | N/A | |
| $0.157 | $0.525 | $0.0315 | N/A | N/A | |
| $0.157 | $0.525 | $0.0315 | N/A | N/A | |
| $0.157 | $0.525 | $0.0315 | N/A | N/A | |
| $0.157 | $0.525 | $0.0315 | N/A | N/A | |
| $0.472$0.157 | $1.57$0.525 | $0.0945$0.0315 | N/A | N/A | |
| $0.157 | $0.525 | $0.0315 | N/A | N/A | |
| $0.157 | $0.525 | $0.0315 | N/A | N/A | |
| $0.157 | $0.525 | $0.0315 | N/A | N/A | |
| $0.157 | $0.525 | $0.0315 | N/A | N/A | |
| $0.157 | $0.525 | $0.0315 | N/A | N/A | |
| $0.157 | $0.525 | $0.0315 | N/A | N/A | |
| $0.157 | $0.525 | $0.0315 | N/A | N/A | |
| $0.157 | $0.525 | $0.0315 | N/A | N/A | |
| $0.166 | $0.174 | $0.0714 | N/A | N/A | |
| $0.184 | $0.493 | $0.042 | N/A | N/A | |
| $0.184 | $0.656 | $0.0236 | N/A | N/A | |
| $0.197 | $0.656 | $0.0394 | N/A | N/A | |
| $0.21 | $0.525 | $0.0525 | N/A | N/A |
Batch rows for this model use normal routing and cost the same as standard API requests. Set provider in a row to choose a provider.