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Z.ai: GLM 5.1

z-ai/glm-5.1

Z.AIopen-weight203K context19 providersIntelligence 73.5· est.

Cheapest provider

$0.98 / 1M

Baidu

Fastest provider (p95)

No throughput data yet — populated as traffic accumulates

Intelligence (estimated)

73.5

Family + generation + popularity + price tier

Per-provider performance

Latency / throughput / uptime measured across providers over the last 30 minutes of live traffic. Atlas’s router weighs these per call (with the eval-gate signal) when picking a variant for Standard and Batch tiers.

ProviderQuantInput $/1MOutput $/1MLatency p50 / p95Throughput p50 / p95Uptime 30mSuccess
Baiduq8· fp8$0.9800$3.0800100.00%
GMICloudq8· fp8$0.9800$3.080099.34%
DeepInfraq4· fp4$1.0500$3.5000100.00%
Chutesq8· fp8$1.2000$4.000097.27%
Phalaundisclosed$1.2100$4.200097.83%
Io Netq8· fp8$1.2200$4.080099.08%
AtlasCloudq8· fp8$1.2600$3.960099.75%
StreamLakeundisclosed$1.2600$3.960099.92%
BaseTenq4· fp4$1.3000$4.3000100.00%
Novitaq8· fp8$1.3800$4.400099.08%
Ambientq8· fp8$1.4000$4.400098.56%
Fireworksundisclosed$1.4000$4.400099.05%
Friendliundisclosed$1.4000$4.4000100.00%
Inceptronq8· fp8$1.4000$4.400095.33%
Parasailq8· fp8$1.4000$4.400086.64%
SiliconFlowq8· fp8$1.4000$4.4000100.00%
Togetherundisclosed$1.4000$4.400098.51%
Z.AIundisclosed$1.4000$4.400099.69%
Veniceq8· fp8$1.7500$5.5000

“—” means live telemetry hasn’t accumulated enough recent traffic for that endpoint. “undisclosed” means the provider serves the model but doesn’t expose the quantization label (typically running fp8 / int8 internally).

Intelligence estimate

No public benchmark numbers indexed for this model yet, so the leaderboard score is derived from the catalogue data we sync: model family standing, generation, and live usage rank — applied identically to open- and closed-weight models. The heuristic ceiling sits below confirmed-benchmark frontier models so curated rankings stay clearly on top.

Want a curated score? File a benchmark report and we’ll add it to the next sync.

How Atlas routes Z.ai: GLM 5.1

  • Realtime tier — direct passthrough at the upstream’s native precision. Best for hard latency / quality guarantees.
  • Standard tier — Atlas picks the cheapest provider variant whose quantization has stayed green on your operation’s eval gates. For Z.ai: GLM 5.1 that’s currently Baidu at $0.98/1M.
  • Batch tier — async, biggest discount. Roadmapped to use provider batch APIs (OpenAI / Anthropic) where available and queued spot capacity for open-weight workloads.