Model profile / StepFun

Step 3.7 Flash

Step 3.7 Flash is a open weight model variant recorded in the BenchLM public dataset.

29 May 2026Open weights

Sources & details

Four areas of evidence

The capabilities behind the model.

How the indices work

Reasoning

106.2Index points

Mathematical and scientific problem solving.

This model│ Other models · 155 rated

Score and research range

Full-precision point: 106.16566164811687
Range: 103.55–108.78 · 90% Research Range
Scope: Conditional fuller R0 A

Score includes qualified prediction of missing evidence.

Coding

No current rating

Software engineering and programming.

Awaiting a qualified category score

General

No current rating

Factual reliability and instruction following.

Awaiting a qualified category score

Agentic

No current rating

Tool use, workflows and professional tasks.

Awaiting a qualified category score

7retained native records

7evidence families

Capabilities estimateQualified original evidence across four areas.

Current index snapshot · 2026-09-16. Each category uses its own scale; scores across categories are not directly comparable. Evidence counts describe the retained Capabilities inputs; a family can contain several tasks or configurations. A point lead does not establish superiority.

Performance in context

Capabilities, price & speed.

Explore every model

Step 3.7 Flash is highlighted wherever a compatible measurement is available.

Step 3.7 Flash: No current checkpoint-bound first-party quote qualified from reviewed original sources; retained values are historical only

Lumina Capabilities Index

Capabilities versus API price

The current Capabilities cohort, with this model highlighted.

Lumina

2025+ · 62 models · 1 highlighted

Chart loads as you explore

Lumina Capabilities Index

Capabilities versus output speed

The current Capabilities cohort, with this model highlighted.

Lumina

2025+ · 72 models · Developer API · 10K · 1 highlighted

Chart loads as you explore

Explore the detail

Sources & model details.

Original evidence, with its context.

Current index evidence 2Scores, research ranges and the sources behind each category.

Capabilities

Score uses the admitted direct native evidence under the selected method.

Exact checkpoint: step-3-7-flash
Method: methods-a4471cee84fd478d2ed3
Range interpretation: C1 native factor under conditional crossed source/family reweighting of admitted fixed-corpus reference and own portfolio
Sources: Artificial Analysis:Artificial Analysis
Source cutoff: {"asOfMeaning":"Selected local candidate: retained historical measurements plus reviewed additions; execution dates remain source-native.","newIdentityRecovery":"2026-09-13T08:41:08.804270+00:00","publicProjectionDate":"2026-09-16T06:02:45.491398+00:00","scoring":"Inherited pinned baseline source vintages plus retained4A/4A.1 originals and SWE owner correction; heterogeneous execution dates, often unknown. Not a claim of simultaneous2026-09-13 execution."}

Explore this index

Reasoning

Score includes qualified prediction of missing evidence.

Exact checkpoint: step-3-7-flash
Method: methods-a4471cee84fd478d2ed3
Range interpretation: Conditional fuller R0 A
Sources: aa
Source cutoff: {"asOfMeaning":"Selected local candidate: retained historical measurements plus reviewed additions; execution dates remain source-native.","newIdentityRecovery":"2026-09-13T08:41:08.804270+00:00","publicProjectionDate":"2026-09-16T06:02:45.491398+00:00","scoring":"Inherited pinned baseline source vintages plus retained4A/4A.1 originals and SWE owner correction; heterogeneous execution dates, often unknown. Not a claim of simultaneous2026-09-13 execution."}

Explore this index

Benchmark measurements 81Published values in each benchmark’s own units.

81 measurements

Step 3.7 Flash published benchmark measurements
Benchmark	Result	Published configuration	Source
Artificial Analysis Agentic Index2026	21.53 index	Exact BenchLM registry variant Step 3.7 Flash; bulk export does not retain a complete upstream harness configuration.Source-native system	BenchLM public datasets — 21 July 2026 ↗Observed 2026-07-21 · checked 2026-07-21source-checked · reference-only
Artificial Analysis Agentic Index2026	21.53 index	Exact BenchLM registry variant Step 3.7 Flash; bulk export does not retain a complete upstream harness configuration.Source-native system	BenchLM public datasets — 2026-07-27 ↗Observed 2026-07-27 · checked 2026-07-27source-checked · reference-only
Artificial Analysis Agentic Index2026	21.53 index	Exact BenchLM registry variant Step 3.7 Flash; bulk export does not retain a complete upstream harness configuration.Source-native system	BenchLM public datasets — 2026-08-01 ↗Observed 2026-08-01 · checked 2026-08-01source-checked · reference-only
Artificial Analysis Coding Index2026	39.57 index	Exact BenchLM registry variant Step 3.7 Flash; bulk export does not retain a complete upstream harness configuration.Source-native system	BenchLM public datasets — 21 July 2026 ↗Observed 2026-07-21 · checked 2026-07-21source-checked · reference-only
Artificial Analysis Coding Index2026	39.57 index	Exact BenchLM registry variant Step 3.7 Flash; bulk export does not retain a complete upstream harness configuration.Source-native system	BenchLM public datasets — 2026-07-27 ↗Observed 2026-07-27 · checked 2026-07-27source-checked · reference-only
Artificial Analysis Coding Index2026	39.57 index	Exact BenchLM registry variant Step 3.7 Flash; bulk export does not retain a complete upstream harness configuration.Source-native system	BenchLM public datasets — 2026-08-01 ↗Observed 2026-08-01 · checked 2026-08-01source-checked · reference-only
GPQA Diamond2026	80.9%	Exact BenchLM registry variant Step 3.7 Flash; bulk export does not retain a complete upstream harness configuration.Source-native system	BenchLM public datasets — 21 July 2026 ↗Observed 2026-07-21 · checked 2026-07-21source-checked · reference-only
GPQA Diamond2026	80.9%	Exact BenchLM registry variant Step 3.7 Flash; bulk export does not retain a complete upstream harness configuration.Source-native system	BenchLM public datasets — 2026-07-27 ↗Observed 2026-07-27 · checked 2026-07-27source-checked · reference-only
GPQA Diamond2026	80.9%	Exact BenchLM registry variant Step 3.7 Flash; bulk export does not retain a complete upstream harness configuration.Source-native system	BenchLM public datasets — 2026-08-01 ↗Observed 2026-08-01 · checked 2026-08-01source-checked · reference-only
Humanity's Last Exam2026	19.9%	Exact BenchLM registry variant Step 3.7 Flash; bulk export does not retain a complete upstream harness configuration.Source-native system	BenchLM public datasets — 21 July 2026 ↗Observed 2026-07-21 · checked 2026-07-21source-checked · reference-only

Showing 10 of 81 measurements

Specifications & source recordsDocumented model details and original references.

Model ID / checkpoint: step-3-7-flash
Weight access: Open weights
Context window: 256,000
Maximum output: Not documented
Modalities: text
Details checked: 1 Aug 2026

BenchLM public datasets — 21 July 2026BenchLM · Published 21 Jul 2026 · checked 21 Jul 2026 · source-checked Artificial Analysis Free API — 21 July 2026Artificial Analysis · Published 21 Jul 2026 · checked 21 Jul 2026 · source-checked BenchLM public datasets — 2026-07-27BenchLM · Published 27 Jul 2026 · checked 27 Jul 2026 · source-checked Artificial Analysis LLM data API — 2026-07-27Artificial Analysis · Published 27 Jul 2026 · checked 27 Jul 2026 · source-checked BenchLM public datasets — 2026-08-01BenchLM · Published 1 Aug 2026 · checked 1 Aug 2026 · source-checked Artificial Analysis LLM data API — 2026-08-01Artificial Analysis · Published 1 Aug 2026 · checked 1 Aug 2026 · source-checked

Specialist task evidenceSeparate agent runs and execution conditions.

All models

Model profile / StepFun

Step 3.7 Flash

Step 3.7 Flash is a open weight model variant recorded in the BenchLM public dataset.

29 May 2026Open weights

Sources & details

Four areas of evidence

The capabilities behind the model.

How the indices work

Reasoning

106.2Index points

Mathematical and scientific problem solving.

This model│ Other models · 155 rated

Score and research range

Full-precision point: 106.16566164811687
Range: 103.55–108.78 · 90% Research Range
Scope: Conditional fuller R0 A

Score includes qualified prediction of missing evidence.

Coding

No current rating

Software engineering and programming.

Awaiting a qualified category score

General

No current rating

Factual reliability and instruction following.

Awaiting a qualified category score

Agentic

No current rating

Tool use, workflows and professional tasks.

Awaiting a qualified category score

7retained native records

7evidence families

Capabilities estimateQualified original evidence across four areas.

Performance in context

Capabilities, price & speed.

Explore every model

Step 3.7 Flash is highlighted wherever a compatible measurement is available.

Step 3.7 Flash: No current checkpoint-bound first-party quote qualified from reviewed original sources; retained values are historical only

Lumina Capabilities Index

Capabilities versus API price

The current Capabilities cohort, with this model highlighted.

Lumina

2025+ · 62 models · 1 highlighted

Chart loads as you explore

Lumina Capabilities Index

Capabilities versus output speed

The current Capabilities cohort, with this model highlighted.

Lumina

2025+ · 72 models · Developer API · 10K · 1 highlighted

Chart loads as you explore

Explore the detail

Sources & model details.

Original evidence, with its context.

Current index evidence 2Scores, research ranges and the sources behind each category.

Capabilities

Score uses the admitted direct native evidence under the selected method.

Exact checkpoint: step-3-7-flash
Method: methods-a4471cee84fd478d2ed3
Range interpretation: C1 native factor under conditional crossed source/family reweighting of admitted fixed-corpus reference and own portfolio
Sources: Artificial Analysis:Artificial Analysis
Source cutoff: {"asOfMeaning":"Selected local candidate: retained historical measurements plus reviewed additions; execution dates remain source-native.","newIdentityRecovery":"2026-09-13T08:41:08.804270+00:00","publicProjectionDate":"2026-09-16T06:02:45.491398+00:00","scoring":"Inherited pinned baseline source vintages plus retained4A/4A.1 originals and SWE owner correction; heterogeneous execution dates, often unknown. Not a claim of simultaneous2026-09-13 execution."}

Explore this index

Reasoning

Score includes qualified prediction of missing evidence.

Exact checkpoint: step-3-7-flash
Method: methods-a4471cee84fd478d2ed3
Range interpretation: Conditional fuller R0 A
Sources: aa
Source cutoff: {"asOfMeaning":"Selected local candidate: retained historical measurements plus reviewed additions; execution dates remain source-native.","newIdentityRecovery":"2026-09-13T08:41:08.804270+00:00","publicProjectionDate":"2026-09-16T06:02:45.491398+00:00","scoring":"Inherited pinned baseline source vintages plus retained4A/4A.1 originals and SWE owner correction; heterogeneous execution dates, often unknown. Not a claim of simultaneous2026-09-13 execution."}

Explore this index

Benchmark measurements 81Published values in each benchmark’s own units.

81 measurements

Step 3.7 Flash published benchmark measurements
Benchmark	Result	Published configuration	Source
Artificial Analysis Agentic Index2026	21.53 index	Exact BenchLM registry variant Step 3.7 Flash; bulk export does not retain a complete upstream harness configuration.Source-native system	BenchLM public datasets — 21 July 2026 ↗Observed 2026-07-21 · checked 2026-07-21source-checked · reference-only
Artificial Analysis Agentic Index2026	21.53 index	Exact BenchLM registry variant Step 3.7 Flash; bulk export does not retain a complete upstream harness configuration.Source-native system	BenchLM public datasets — 2026-07-27 ↗Observed 2026-07-27 · checked 2026-07-27source-checked · reference-only
Artificial Analysis Agentic Index2026	21.53 index	Exact BenchLM registry variant Step 3.7 Flash; bulk export does not retain a complete upstream harness configuration.Source-native system	BenchLM public datasets — 2026-08-01 ↗Observed 2026-08-01 · checked 2026-08-01source-checked · reference-only
Artificial Analysis Coding Index2026	39.57 index	Exact BenchLM registry variant Step 3.7 Flash; bulk export does not retain a complete upstream harness configuration.Source-native system	BenchLM public datasets — 21 July 2026 ↗Observed 2026-07-21 · checked 2026-07-21source-checked · reference-only
Artificial Analysis Coding Index2026	39.57 index	Exact BenchLM registry variant Step 3.7 Flash; bulk export does not retain a complete upstream harness configuration.Source-native system	BenchLM public datasets — 2026-07-27 ↗Observed 2026-07-27 · checked 2026-07-27source-checked · reference-only
Artificial Analysis Coding Index2026	39.57 index	Exact BenchLM registry variant Step 3.7 Flash; bulk export does not retain a complete upstream harness configuration.Source-native system	BenchLM public datasets — 2026-08-01 ↗Observed 2026-08-01 · checked 2026-08-01source-checked · reference-only
GPQA Diamond2026	80.9%	Exact BenchLM registry variant Step 3.7 Flash; bulk export does not retain a complete upstream harness configuration.Source-native system	BenchLM public datasets — 21 July 2026 ↗Observed 2026-07-21 · checked 2026-07-21source-checked · reference-only
GPQA Diamond2026	80.9%	Exact BenchLM registry variant Step 3.7 Flash; bulk export does not retain a complete upstream harness configuration.Source-native system	BenchLM public datasets — 2026-07-27 ↗Observed 2026-07-27 · checked 2026-07-27source-checked · reference-only
GPQA Diamond2026	80.9%	Exact BenchLM registry variant Step 3.7 Flash; bulk export does not retain a complete upstream harness configuration.Source-native system	BenchLM public datasets — 2026-08-01 ↗Observed 2026-08-01 · checked 2026-08-01source-checked · reference-only
Humanity's Last Exam2026	19.9%	Exact BenchLM registry variant Step 3.7 Flash; bulk export does not retain a complete upstream harness configuration.Source-native system	BenchLM public datasets — 21 July 2026 ↗Observed 2026-07-21 · checked 2026-07-21source-checked · reference-only

Showing 10 of 81 measurements

Specifications & source recordsDocumented model details and original references.

Model ID / checkpoint: step-3-7-flash
Weight access: Open weights
Context window: 256,000
Maximum output: Not documented
Modalities: text
Details checked: 1 Aug 2026

Specialist task evidenceSeparate agent runs and execution conditions.

The capabilities behind the model.

Capabilities, price & speed.

Capabilities versus API price

Capabilities versus output speed

Sources & model details.

Capabilities

Reasoning

More from StepFun.

Step 3.5 Flash 2603

Step 3.5 Flash

Step3 VL 10B

The capabilities behind the model.

Capabilities, price & speed.

Capabilities versus API price

Capabilities versus output speed

Sources & model details.

Capabilities

Reasoning

More from StepFun.

Step 3.5 Flash 2603

Step 3.5 Flash

Step3 VL 10B