Cerebras
Qwen3.8-27B
Measured 2026-10-04
Run Qwen3.8-27B on Speko →One API, every model on this board.
Score
86
Task done
86.14%
72–97% 95% CI bootstrap over items · n=95 · measured 2026-10-04
Refusal quality
80.0%
names the gap 70% · offers a route 83% · 10 probes x 3 iterations · 2 silent turns scored zero
Fabrication
0%
0 of 10 probes (30 probe runs) · ≤31%
Dead-air
43.4%
139 of 320 turns
Tool silence
62.3%
139 of 223 tool-call turns
Stalled
7.8%
7 of 90 runs
TTFT p50
246ms
246–592 p50–p90 · n=38
Cost / 1M tok
$1.49
Cerebras list pricing for this model, $0.99/1M input and $1.49/1M output, from the vendor’s own model page (inference-docs.cerebras.ai/models/qwen-3.8-27b, read 2026-09-06). The same weights cost $2.55/1M output on the Alibaba row.
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