Recipe
gpt-oss-20b-q8-0-apple-m1-max-64gb-llama-cpp-tp1
gpt-oss-20b-q8-0-apple-m1-max-64gb-llama-cpp-tp1Observed LocalMaxxing leaderboard run. Evidence for compatibility, not an executable launch contract.
Record
- Status
- candidate
- Source
- localmaxxing
- Engine
- llama.cpp
- Engine version
- b9535 (da87e9b61)
- Accelerators
- 1
- Tensor parallel
- 1
- Context tokens
- 640
- Max concurrency
- 1
- chat
- unknown
- reasoning
- unknown
- tools
- unknown
- vision
- unknown
Hugging Face model card
Identity
https://huggingface.co/openai/gpt-oss-20b- Repository
- openai/gpt-oss-20b
- Status
- known
- Link type
- Exact Hub repository
Public Hugging Face repository confirmed by the Hub API.
Candidate: useful compatibility or speed evidence. The registry does not offer Run until promotion requirements are met.
Observed configuration
llama.cpp
Evidence only · candidate · reference
Candidate evidence — not a Run contract
Observed source tokens
Mechanical split of the source command. Unverified against the engine CLI. The registry does not offer Run for this recipe.
llama-bench-mgpt-oss-20b-Q8_0.gguf-p512-n128
| Flag | Value |
|---|---|
-m | gpt-oss-20b-Q8_0.gguf |
-p | 512 |
-n | 128 |
Measured speed
| Concurrency | Context | Prefill | Decode | TTFT ms | Status | Sweep |
|---|---|---|---|---|---|---|
| 1 | 640 | 1,021.9 | 83.6 | — | observed | gpt-oss-20b-q8-0-apple-m1-max-64gb-llama-cpp-tp1-sweep |
Remaining fields
Identity, launch, related records, and measured speed are shown above. This is the rest of the normalized record.
- hardware count
- 1
- hardware id
- apple-m1-max-64gb
- id
- gpt-oss-20b-q8-0-apple-m1-max-64gb-llama-cpp-tp1
- model instance id
- openai-gpt-oss-20b--q8-0
- recipe source
- localmaxxing
- schema version
- local-ai-registry/v1
- speed sweep ids
- gpt-oss-20b-q8-0-apple-m1-max-64gb-llama-cpp-tp1-sweep
- status
- candidate
capabilities
engine
- name
- llama.cpp
- version
- b9535 (da87e9b61)
serving
- max concurrency
- 1
- max context tokens
- 640
- tensor parallel
- 1
Provenance & metadata (3)
facts
- capabilities.chat · provenance · captured at
- 2026-08-30T09:10:02Z
capabilities.chat · reason capability-not-verified
capabilities.chat · state unknown
- capabilities.reasoning · provenance · captured at
- 2026-08-30T09:10:02Z
capabilities.reasoning · reason capability-not-verified
capabilities.reasoning · state unknown
- capabilities.tools · provenance · captured at
- 2026-08-30T09:10:02Z
capabilities.tools · reason capability-not-verified
capabilities.tools · state unknown
- capabilities.vision · provenance · captured at
- 2026-08-30T09:10:02Z
capabilities.vision · reason capability-not-verified
capabilities.vision · state unknown
- engine.graph mode · provenance · captured at
- 2026-08-30T09:10:02Z
engine.graph mode · reason runtime-detail-not-published
engine.graph mode · state unknown
- serving.kv cache tokens · provenance · captured at
- 2026-08-30T09:10:02Z
serving.kv cache tokens · reason kv-cache-capacity-not-published
serving.kv cache tokens · state unknown
metadata
- localmaxxing · backend
- metal
- localmaxxing · hardware label
- M1 Max
- localmaxxing · notes
- M1 Max (Metal) via prebuilt llama.cpp b9535, llama-bench best-of-5. tg128=83.58 t/s, pp512=1021.94 t/s. Comparison vs 1x AMD R9700 Vulkan (123.4 tg / 3159 pp).
- localmaxxing · observed command
- llama-bench -m gpt-oss-20b-Q8_0.gguf -p 512 -n 128
- localmaxxing · run id
- cmq1eccf500mko6015zitbqv8
- localmaxxing · tokenized · arguments
- llama-bench, -m, gpt-oss-20b-Q8_0.gguf, -p, 512, -n, 128
- localmaxxing · tokenized · fidelity
- faithful
provenance
- captured at
- 2026-08-30T09:10:02Z
sources
| captured at | kind | url |
|---|---|---|
| 2026-08-30T09:10:02Z | normalized-recipe | www.localmaxxing.com/en/runs/cmq1eccf500mko6015zitbqv8 ↗ |