Z.ai (GLM)
GLM 5.3 Prime
GLM-5.3-Prime is the high-speed variant of Z.ai's GLM-5.3, inheriting its full capabilities while delivering 1.5–2× the output throughput through inference acceleration. It supports text input and output with a 1M-token...
Cost / 1M tokens
High usage$2.80
input
$0.56
cached input
$8.80
output
Context Window
1M
Up to 131K max output
Architecture
753B total MoE
text → text
Quickstart & API
z-ai/glm-5.3-primeBest for & Strengths
Key Strengths
Recommended Workloads in ChatOSS
- Demanding software engineering
- Agentic code review
- Self-hosted enterprise AI
Verified Evaluations
Benchmarks & Frontier Comparison
How GLM 5.3 Prime compares against leading open-weight and proprietary frontier models across independent agentic coding and reasoning suites.
| Benchmark (Metric) | GLM 5.3 Prime | DeepSeek V4.1 Flash | GLM 5.3 | Kimi K3.1 Pro | Claude Opus 5.5 |
|---|---|---|---|---|---|
| Agentic & Software Engineering | |||||
| ChatOSS Agentic Coding Index (%) | 58.3% | 63.2% | 58.3% | 65% | 74.1% |
| SWE-Bench Verified (%) | 95.4% | 91.5% | 95.4% | 94.8% | 97% |
| DeepSWE v1.1 (Pass@1 %) | 69% | 77% | 69% | 73.5% | 74.2% |
| Vibe Code Bench v1.1 (%) | 78.13% | 87.7% | 78.1% | 88.4% | 90.3% |
| Terminal-Bench 4.0 (%) | 42% | 42.3% | 42% | 46.2% | 65.2% |
| Code Migration (%) | 44.22% | 45.6% | 44.2% | 52% | 66.7% |
| Intelligence & Token Economics | |||||
| Artificial Analysis Intelligence Index (0–100) | — | 39.5 | 44.8 | 55.1 | 57.6 |
| Input Price (/ 1M tokens) | $2.80 | $0.15 | $1.40 | $2.00 | $4.00 |
| Output Price (/ 1M tokens) | $8.80 | $0.60 | $4.40 | $10.00 | $20.00 |
ChatOSS Agentic Coding Index
ChatOSS Benchmark Audit · 4-benchmark composite mean
SWE-Bench Verified
Vals AI · Terminus 2
DeepSWE v1.1
DeepSWE / Official Audit · Mini-SWE-Agent
Vibe Code Bench v1.1
Vals.ai · OpenHands
Terminal-Bench 4.0
Vals.ai / Artificial Analysis · Terminus 2
Terminal-Bench 2.1
Vals.ai · Terminus 2
Code Migration
Vals.ai · Vals evaluation harness
AutomationBench
Artificial Analysis v4.3
GPQA Diamond (Pass@1)
Benchmark Audit
Humanity's Last Exam (Pass@1)
Artificial Analysis / Audit
Active Provider Endpoints (1)
Upstream inference providers serving GLM 5.3 Prime, with per-provider pricing, context limits, quantization, and 24-hour uptime.
| Provider | Input / 1M | Output / 1M | Cache Read / 1M | Context | Max Output | Quantization | Uptime (24h) |
|---|---|---|---|---|---|---|---|
Alibabacache alibaba | $2.80 | $8.80 | $0.56 | 1M | 131K | — | 99.7% |
Supported API Parameters
Parameters accepted by this model when called through ChatOSS or OpenRouter.
Deep-Dive Benchmarks & Teardowns
Independent benchmark analysis and real-world agent billing teardowns featuring GLM 5.3 Prime.
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