spark-s1-4b-v6 (Open Spark Jev, abhishek085)
Data: JevBench v1.6.1, published 2026-10-06
Capability 54.0 · rank #53 of 92 on the open-weights board
Last measured: 2026-10-05 · measurement release: v1.6.1
Apache-2.0 (code and weights); base Qwen/Qwen3.5-4B Apache-2.0
intelligence
43.2
calibration
64.8
speed
87.0
cost
60.4
Composite (secondary)
44.9 · Composite rank #27
Cost and measurement conditions
$0.021 per 1,000 decisions (estimated)
v1.5.4 published cost per 1,000 decisions carried (pricing rules unchanged; v1.6 item lengths differ): documented hosted-model estimate; reference deepinfra:Qwen/Qwen3.5-4B frozen at the 25 Sep cut-off; the snapshot records deprecation on 11 Jun 2026 and replacement by Qwen/Qwen3.5-9B; the frozen snapshot rates remain in use (I-3)
Measured p50 latency: 0.129 s (on-GPU, no network, loopback; not directly comparable with API latency, which we time end to end from our measuring host, network included)
Ranking and cap use: 0.41 s (est. incl. network (2x + 150 ms))
Self-hosted model: measured p50 0.129 s on-GPU, no network (timed on our GPU over loopback). Not directly comparable with API latency, which we time end to end from our measuring host, network included. The ranking and latency cap use the same estimate for every self-hosted row: 2 × measured + 150 ms = 0.41 s. Model authors can ask us to time a hosted endpoint instead (on request).
x2 + 0.15 s (assumption, not measured)
evaluator-owned Lium GPU pod (RTX6000), offline read-only container