- Source
- Model registry API
- Verified
- 25 Aug 2026
- Confidence
- High
01What this is
- Author
- Qwen
- Family
- Qwen2.5
- Task
- text-generation
- Hugging Face
- Qwen/Qwen2.5-72B-Instruct
- OpenRouter
- qwen/qwen-2.5-72b-instruct
- Also known as
- Qwen2.5-72B-Instruct, qwen2.5 72b, qwen 72b
02Registry facts
- LicenceFACT
other
- FreshRetrieved 25 Aug 2026
- ParametersFACT
72.7B
- FreshRetrieved 25 Aug 2026
- Context lengthFACT
not returned by the registry
- Evidence not verified
- Downloads (30 days)FACT
399,619
- FreshRetrieved 25 Aug 2026
- LikesFACT
976
- FreshRetrieved 25 Aug 2026
- GatedFACT
no
- FreshRetrieved 25 Aug 2026
Model
- downloadsFACT
399619
- FreshRetrieved 25 Aug 2026
- gatedFACT
false
- FreshRetrieved 25 Aug 2026
- likesFACT
976
- FreshRetrieved 25 Aug 2026
- model licenseFACT
other
- FreshRetrieved 25 Aug 2026
- parameter countFACT
72706203648
- FreshRetrieved 25 Aug 2026
Other
- last modifiedFACT
2025-01-12T02:07:38.000Z
- FreshRetrieved 25 Aug 2026
- libraryFACT
transformers
- FreshRetrieved 25 Aug 2026
03VRAM by quantisation
Peak VRAM for serving this model, computed by lib/deployment/hardware.ts from weights + KV cache + 15% runtime overhead. Inputs: 72.7B parameters, 8,192 tokens of context (assumed — none fetched yet), 4 concurrent requests (assumed).
| Quantisation | Weights | Total |
|---|---|---|
| fp16 | 145.41 GB | 179.57 GB |
| int8 | 72.71 GB | 95.96 GB |
| int4 | 36.35 GB | 54.15 GB |
What this estimate assumes
- Weights: 72.7B parameters × 2 bytes per parameter (fp16) = 145.41 GB.
- No model configuration was supplied, so the KV cache uses the size heuristic for this band: 0.328 MB per token, from Qwen2.5-72B-Instruct (80 × 8 × 128).
- KV cache: 0.328 MB per token × 8,192 tokens of context × 4 concurrent requests = 10.74 GB, sized for every user holding a full context at once.
- Overhead: 15% of weights plus KV cache for the runtime, activations and memory fragmentation = 23.42 GB.
- GB means 10⁹ bytes, matching how GPU memory is advertised.
- KV cache held at fp16 (2 bytes per element); quantising weights does not by itself quantise the cache.
- Peak figure, not average: prefix caching and paged attention usually keep real usage lower, while speculative decoding, CUDA graphs and a second resident model push it higher.
- "Concurrent" counts requests generated at the same instant, not people: 4 simultaneous requests is the worst case this estimate is built on — measure yours before buying.
04Hardware profiles
Cloud GPU instance — 1–2 × NVIDIA A100 80 GB
- GPU
- NVIDIA A100 80 GB (AWS P4d, Azure NDasr A100 v4, GCP A2)
- VRAM
- 80 GB
- System RAM
- 256 GB
- Storage
- 2000 GB
- CPU
- 24–48 vCPU
- Form factor
- Cloud instance
Indicative costUS$2 – US$12
indicative on-demand rental, USD per hour, Aug 2026 — verify against the provider price list for your region
For 32B models with long context, or 70B-class models on two cards. The band covers one to two GPUs and the gap between committed-use and on-demand rates. Check that the GPU family you need exists in the region you are required to stay in before committing to a design.
Sizing basis
- Weights: 72.7B parameters × 2 bytes per parameter (fp16) = 145.41 GB.
- No model configuration was supplied, so the KV cache uses the size heuristic for this band: 0.328 MB per token, from Qwen2.5-72B-Instruct (80 × 8 × 128).
- KV cache: 0.328 MB per token × 8,192 tokens of context × 4 concurrent requests = 10.74 GB, sized for every user holding a full context at once.
- Overhead: 15% of weights plus KV cache for the runtime, activations and memory fragmentation = 23.42 GB.
- GB means 10⁹ bytes, matching how GPU memory is advertised.
- KV cache held at fp16 (2 bytes per element); quantising weights does not by itself quantise the cache.
- Peak figure, not average: prefix caching and paged attention usually keep real usage lower, while speculative decoding, CUDA graphs and a second resident model push it higher.
- "Concurrent" counts requests generated at the same instant, not people: 4 simultaneous requests is the worst case this estimate is built on — measure yours before buying.
On-premise dual 80 GB GPU server
- GPU
- 2 × NVIDIA A100 80 GB or 2 × NVIDIA H100 80 GB with NVLink
- VRAM
- 160 GB
- System RAM
- 512 GB
- Storage
- 8000 GB
- CPU
- Dual-socket x86 server CPU, 48+ cores total
- Form factor
- Rack server
Indicative costUS$35,000 – US$110,000
indicative build cost for the complete machine, USD, Aug 2026 — verify with a local supplier
For a 70B-class model at fp16/int8 with tensor parallelism, or several mid-size models served side by side. Needs real data-centre conditions: 4–8 kW of power, front-to-back cooling and a rack. The price band is wide because A100 and H100 are several times apart.
Sizing basis
- Weights: 72.7B parameters × 2 bytes per parameter (fp16) = 145.41 GB.
- No model configuration was supplied, so the KV cache uses the size heuristic for this band: 0.328 MB per token, from Qwen2.5-72B-Instruct (80 × 8 × 128).
- KV cache: 0.328 MB per token × 8,192 tokens of context × 4 concurrent requests = 10.74 GB, sized for every user holding a full context at once.
- Overhead: 15% of weights plus KV cache for the runtime, activations and memory fragmentation = 23.42 GB.
- GB means 10⁹ bytes, matching how GPU memory is advertised.
- KV cache held at fp16 (2 bytes per element); quantising weights does not by itself quantise the cache.
- Peak figure, not average: prefix caching and paged attention usually keep real usage lower, while speculative decoding, CUDA graphs and a second resident model push it higher.
- "Concurrent" counts requests generated at the same instant, not people: 4 simultaneous requests is the worst case this estimate is built on — measure yours before buying.
05Hosted providers
No hosted provider has been fetched for this model. OpenRouter’s catalogue is read by pnpm sync; until it runs, this is empty rather than assumed.
06Deployment stacks
No published deployment stack names this model yet.
07Evidence
- 01–07Tier 4official repository / model cardHugging Face Hub
Hugging Face model card data — Qwen/Qwen2.5-72B-Instruct
https://huggingface.co/api/models/Qwen/Qwen2.5-72B-Instruct
FreshRetrieved 25 Aug 2026sha256:86738a70de8e7 records · · · · · ·
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