Z.aiOpen weightsReleased 26 Aug 2026
z-ai/glm-5.3-flashPeer group: 31 models with a blended list price $0.15 to $1 per 1M tokens (3 input : 1 output). Charts below compare GLM 5.3 Flash with all models; cost and speed charts focus on this peer group.
Verification score: the share of 80 questions from open datasets answered correctly. See the benchmark datasets.
GLM 5.3 Flash circled; dashed line joins models no cheaper model beats
GLM 5.3 Flash circled · accurate and quick sits top left
GLM 5.3 Flash circled · output tokens, reasoning included
All models tested on the current suite
Average cost of one question, split into input, reasoning and answer tokens at each model's list price. Reasoning tokens are billed as output.
Peer group: blended price $0.15 to $1
All models · lower is better
Median of 3 streamed runs of the same prompt, measured 25 Oct 2026.
Peer group ($0.15 to $1) · higher is better
Peer group ($0.15 to $1) · lower is better
Peer group ($0.15 to $1) · lower is better
GLM 5.3 Flash circled · quick to start and fast sits top left
Questions answered correctly in each category
Head to head with its closest rivals, other Z.ai models and the top models overall.
Every host serving this model through OpenRouter, from OpenRouter's catalogue
| Host | Input / 1M | Output / 1M | Context | Max output | Quantization |
|---|---|---|---|---|---|
| Relace | $0.0379 | $0.074 | 1M | 131k | — |
| OpenInference | $0.0363 | $0.110001 | 1M | 944k | fp4 |
| Darkbloom | $0.065 | $0.18 | 262k | 66k | fp4 |
| Wafer | $0.054 | $0.2 | 1M | 131k | nvfp4 |
| GMICloud | $0.075 | $0.25 | 1M | 944k | fp8 |
| Sail Research | $0.07835 | $0.25 | 1M | 131k | fp4 |
| Novita | $0.084 | $0.28 | 1M | 131k | fp8 |
| StreamLake | $0.0885 | $0.295 | 1M | 128k | fp8 |
| CoreWeave | $0.12 | $0.38 | 1M | 944k | nvfp4 |
| InferenceNet | $0.12 | $0.388 | 1M | 262k | fp4 |
| Phala | $0.1275 | $0.425 | 1M | 131k | nvfp4 |
| DigitalOcean | $0.13125 | $0.4375 | 1M | 131k | — |
| Makora | $0.14 | $0.47 | 1M | 131k | — |
| Near AI | $0.08 | $0.5 | 1M | 944k | fp8 |
| Reka | $0.12 | $0.5 | 1M | 944k | — |
| NextBit | $0.125 | $0.5 | 1M | 128k | fp4 |
| Mistral | $0.15 | $0.5 | 1M | 131k | — |
| Cohere | $0.15 | $0.5 | 1M | 131k | — |
| PrimeIntellect | $0.15 | $0.5 | 1M | 131k | — |
| Nebius | $0.15 | $0.5 | 1M | 922k | fp4 |
| Modal | $0.15 | $0.5 | 1M | 944k | fp4 |
| BaseTen | $0.15 | $0.5 | 1M | 131k | fp8 |
| Crusoe | $0.15 | $0.5 | 1M | 944k | fp4 |
| AtlasCloud | $0.15 | $0.5 | 1M | 131k | fp8 |
| Fireworks | $0.15 | $0.5 | 1M | 944k | — |
| Friendli | $0.15 | $0.5 | 1M | 944k | — |
| SiliconFlow | $0.15 | $0.5 | 1M | 262k | fp8 |
| Morph | $0.15 | $0.5 | 1M | 944k | fp8 |
| Together | $0.15 | $0.5 | 1M | 944k | — |
| Parasail | $0.15 | $0.5 | 1M | 944k | fp4 |
| Venice | $0.15 | $0.5 | 1M | 131k | — |
| DeepInfra | $0.15 | $0.5 | 1M | 944k | fp4 |
| Z.AI | $0.15 | $0.5 | 1M | 131k | fp8 |
| Inceptron | $0.17 | $0.6 | 1M | 944k | fp8 |
Scores, speed and billed cost are our own measurements. Prices, context window and hosts come from OpenRouter's catalogue on the test date.