Step 3.5 Flash

open weightsdeprecated by benchmark source

StepFun · released 2026-02-02 · 1 offers

Context 256K tokens

Top 1 cheapest providers (Adjusted $/task)

Within the active global provider, residency and confidentiality filters.

#	Provider	Platform	Raw input $/1M	Raw output $/1M	Adjusted $/task
1	SiliconFlow	OpenRouter	$0.100	$0.300

1 of 7 inputs6 radar axes: DesignArena's two boards share one

34.6

dominance-adjusted from 40.4: a better-measured model that is at least as good on each of these inputs ranks above it

AA Coding —Coding Agent v1.4 —AA Intelligence 16.6AA Agentic —Epoch ECI —Software ECI —DesignArena —/—

Radar: percentile among all models measured on each input; a gap means not measured.

12 of 140 registered benchmark versions · bars show the percentile among all models measured on each benchmark.

Terminal-Bench Hard (AA)6927.3%2026-09-10
Terminal-Bench Hard (AA) pinned revision 74221fb ↗ · Published board — Tests a pinned 44-task hard subset of terminal-based work using Terminus 2.

IFBench (AA single-turn)7664.6%2026-09-10
IFBench (AA single-turn) published 2026-09-10 ↗ · Published board — Tests precise single-turn instructions with deterministic rule checks.

Humanity's Last Exam (AA text-only)7321.1%2026-09-10
Humanity's Last Exam (AA text-only) published 2026-09-10 ↗ · Published board — Tests expert-level knowledge on AA's text-only Humanity's Last Exam subset.
AA-Omniscience Index45-41.82026-09-10
AA-Omniscience Index published 2026-09-10 ↗ · Published board — Tests factual reliability while rewarding correct answers and penalizing hallucinations.
UGI NatInt8637.62026-09-10
UGI NatInt published 2026-09-10 ↗ · Published board — A private-question evaluation of general knowledge and reasoning across textbook, popular-culture and world-model topics.

AA-LCR v1.14750.0%2026-09-10
AA-LCR v1.1 v1.1 ↗ · Published board — Tests reasoning across multiple long documents with corrected answer keys and grading.

AA Intelligence Index6416.62026-09-19
AA Intelligence Index published 2026-09-19 ↗ · Published board — Artificial Analysis publishes this board without a version number; we keep the date each result was retained.

CritPt (AA)712.5%2026-09-10
CritPt (AA) published 2026-09-10 ↗ · Published board — Tests research-level physics reasoning with Python, symbolic and numerical answers.
GPQA Diamond (AA)7383.1%2026-09-10
GPQA Diamond (AA) published 2026-09-10 ↗ · Published board — Tests graduate-level biology, physics and chemistry knowledge on the Diamond subset.

τ²-Bench Telecom (AA)9394.4%2026-09-10
τ²-Bench Telecom (AA) published 2026-09-10 ↗ · Published board — Tests dual-control telecom agents that coordinate tool use with a simulated user.

UGI Willingness272.502026-09-10
UGI Willingness published 2026-09-10 ↗ · Published board — A private-question evaluation of how far a model follows challenging instructions before refusing or deviating.
UGI7940.82026-09-10
UGI published 2026-09-10 ↗ · Published board — A private-question suite combining sensitive-topic knowledge with willingness to follow controversial instructions.

UGI Writing9045.92026-09-10
UGI Writing published 2026-09-10 ↗ · Published board — A maintainer-owned writing evaluation considering intelligence, style, repetition and length adherence, informed by human preferences.

Missing coverage · 132 benchmark versions

No result does not mean a zero, or that the model was never tested. Collection failures and disputed versions retain their distinct status.

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SiliconFlow