- First word afterttft_median_s · s
- 673.54 sper person · median of 5
- Slowest first wordttft_max_s · s
- 676.91 sper person · max of 5
- Machine totalaggregate_decode_tps · tok/s
- 18.10 tok/smachine total · single · sample count not recorded
- Machine total including first-word waitaggregate_e2e_tps · tok/s
- 0.86 tok/smachine total · single · sample count not recorded
- Everyone answered inwall_seconds · s
- 682.35 smachine total · single · sample count not recorded
- Peak memory, whole hostpeak_host_unavailable_gib · GiB
- 94.36 GiBmachine total · max · sample count not recorded
Runs on this setup
Earlier runs keep their own engine versions and outcomes. Workload shapes stay separate.
History and measured sweep
| Date | Shape | Each person · median | Machine total | First word · median | Result | Run |
|---|---|---|---|---|---|---|
2026-10-07 | 5 people · shared · warm | not recorded | 85.36 tok/s | 14.44 s | Passed | |
2026-10-07 | 5 people · shared · cold | not recorded | 72.02 tok/s | 672.79 s | Passed | |
2026-10-07 | 5 people · distinct · cold | not recorded | 18.10 tok/s | 673.54 s | Failed |
Each person in this run
First-word wait against writing speed after that word, including pauses. Earlier streams can pause while other people’s prompts are read. The table preserves filled input, cached-token counts and each person’s checks.
Per-person table · all measured request rows
| Person | Filled input | Cached tokens | Output | First word | Writing after first word | Total time | Checks | Run |
|---|---|---|---|---|---|---|---|---|
2 | 250,011 | unknown | 119 | 650.29 s | 3.76 tok/sone person · includes waits | 681.65 s | 3/3 Hidden facts found · completed · checks passed | |
4 | 250,011 | unknown | 110 | 665.16 s | 6.61 tok/sone person · includes waits | 681.65 s | 3/3 Hidden facts found · completed · checks passed | |
1 | 250,011 | unknown | 118 | 673.54 s | 13.54 tok/sone person · includes waits | 682.18 s | 3/3 Hidden facts found · completed · checks passed | |
3 | 250,011 | unknown | 115 | 676.91 s | 21.62 tok/sone person · includes waits | 682.18 s | 3/3 Hidden facts found · completed · checks passed | |
5 | 250,011 | unknown | 123 | 676.46 s | 20.76 tok/sone person · includes waits | 682.34 s | 0/3 Hidden facts found · completed · checks missed |
Per-person table · all measured request rows
| Person | Filled input | Cached tokens | Output | First word | Writing after first word | Total time | Checks | Run |
|---|---|---|---|---|---|---|---|---|
2 | 250,011 | unknown | 119 | 650.29 s | 3.76 tok/sone person · includes waits | 681.65 s | 3/3 Hidden facts found · completed · checks passed | |
4 | 250,011 | unknown | 110 | 665.16 s | 6.61 tok/sone person · includes waits | 681.65 s | 3/3 Hidden facts found · completed · checks passed | |
1 | 250,011 | unknown | 118 | 673.54 s | 13.54 tok/sone person · includes waits | 682.18 s | 3/3 Hidden facts found · completed · checks passed | |
3 | 250,011 | unknown | 115 | 676.91 s | 21.62 tok/sone person · includes waits | 682.18 s | 3/3 Hidden facts found · completed · checks passed | |
5 | 250,011 | unknown | 123 | 676.46 s | 20.76 tok/sone person · includes waits | 682.34 s | 0/3 Hidden facts found · completed · checks missed |
Answer checks
12/15 Hidden facts found4/5 request checks
Method
Synchronized long public-domain prompts, three exact hidden facts per user. Decode rate uses completion tokens minus one over first output through stream completion; effective prefill includes scheduling and first-token latency. Aggregate decode uses the union window from first output to final completion; end-to-end rate includes prefill.
Limits
Lab observation, not customer acceptance. Prompt content length excludes the server chat template; actual per-request usage is recorded. Synthesis is requested and retained but semantic accuracy is unassessed. All requested users must overlap in observed decode to pass.
What did not work
- One or more requests did not meet completion, exact retrieval, synthesis-presence, reasoning-off or token-accounting requirements.
What ran
Exact identity
- Original publisher model
- Ornith-1.5-35B-A3B
- Publisher revision
10fbf86fed7ecee4a061f8b499a618f46001cac1- Variant · format · precision
- NVFP4 variant · safetensors · NVFP4
- Weights SHA-256
648fe83171485f4be03ea58d86089e088c94c2a3dc88922233f9002f30d8bc8b8303cef7d375021d69dcafc60d3fad5f8186995b18b0db5e2a609aadeb8a4f51cb5c5978721a1e87406ae68f1cd5a855326e40ff8bc13832644c392115336987- Engine · version · feature
- NVIDIA NGC vLLM ·
0.29.0+5013de39.dev· with multi-token prediction - Hardware
- NVIDIA GB10, 128 GB unified memory
- Harness / workload
keep-long-context-concurrency-v1 · 1- Workload suite · version
not recorded- Harness SHA-256
not recorded- Fixture SHA-256
1e01cbcbd88ac9878b889cba44f56c74f5ab023f35e2d28a3bbe343923d909e0
Workload shape
- cache state
- cold
- People in this run
- 5
- Configured window (tokens)
- 262144
- Filled content target (tokens)
- 250000
- fixture variant
- distinct-v1
- KV cache precision
- fp8
- Output token ceiling
- 512
- scenario
- distinct
- Feature
- with multi-token prediction
- Thinking
- off
Full reproduction pack available to customers and evaluators on request
All recorded numbers
Metric definitions, scope and statistics
| Metric | Value | Scope | Statistic | Sample count | Basis / source field | Run |
|---|---|---|---|---|---|---|
wall seconds | 682.35 s | machine total | single | not recorded | wall_seconds | |
ttft median s | 673.54 s | per person | median | 5 | ttft_median_s | |
hidden facts total | 15.00 count | machine total | single | not recorded | needle_total | |
ttft max s | 676.91 s | per person | max | 5 | ttft_max_s | |
requests ok | 4.00 count | machine total | single | not recorded | requests_ok | |
hidden facts correct | 12.00 count | machine total | single | not recorded | needle_correct | |
latency bar seconds | 300.00 s | machine total | single | not recorded | latency_bar_seconds | |
decode overlap | 5.00 count | machine total | single | not recorded | decode_overlap | |
aggregate concurrency | 5.00 count | machine total | single | not recorded | aggregate_concurrency | |
requests total | 5.00 count | machine total | single | not recorded | requests_total | |
aggregate decode tps | 18.10 tok/s | machine total | single | not recorded | aggregate_tps | |
aggregate e2e tps | 0.86 tok/s | machine total | single | not recorded | aggregate_end_to_end_tps | |
peak host unavailable gib | 94.36 GiB | machine total | max | not recorded | peak_host_unavailable_gib |
Data and citation
Skilak Keep evidence, run fcdbf0c4c05e4432a275612c, measured 2026-10-07T07:04:09.414932+00:00. https://skilak.ai/keep/resources/evidence/r/fcdbf0c4c05e4432a275612c
