Capability
Unranked
field median 56.3
Not eligible for a public rank
Every change to the models you run, with its source and its date. Releases, price changes, retirements, API changes, and incidents.Every change to the models you run, with its source.
Follow model changesReleased Sep 20, 2026 — see all recent releases
Data as of September 21, 2026 · How the score is built
Step 5 Preview will be repriced, updated or retired. Get each notice with its source and date. Follow model changes
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Multimodal & Grounded ranks #28. Particularly strong for screenshots, documents, charts, and grounded multimodal workflows.
22 published rows leave some tracked benchmark slots empty.
Each value carries a field reference instead of floating alone. Markers compare this model with the current ranked and priced catalog; they are not absolute quality thresholds.
Capability
Unranked
field median 56.3
Not eligible for a public rank
Price
$1input / $2.70 output
input median $1
cached $0.050 · blended $1.85
Speed
92tok/s
field median 97 tok/s
First token 24.86 s
Context
1Mtokens
field median 256,000
Maximum output length is tracked separately
Coverage is split by category so a strong number never hides a thin evidence base. Verified means the row is tied to a published source; provisional rows remain visible but separate.
Scores and ranks appear only where published evidence can be displayed. The table keeps the score, weight, cohort, and evidence state together.
| Category | Score | Rank | Percentile | Weight | Benchmarks | Evidence |
|---|---|---|---|---|---|---|
| AgenticRank Not rankedWeight 22%11 benchmarksVerified | 78.3 | Not ranked | Not available | 22% | 11 benchmarks | Verified |
| CodingRank Not rankedWeight 20%6 benchmarksVerified | 75.9 | Not ranked | Not available | 20% | 6 benchmarks | Verified |
| ReasoningRank Not rankedWeight 17%1 benchmarkVerified | 78.5 | Not ranked | Not available | 17% | 1 benchmark | Verified |
| MultimodalRank #28 of 49Percentile 44thWeight 12%2 benchmarksVerified | 61.2 | #28 of 49 | 44th | 12% | 2 benchmarks | Verified |
| KnowledgeRank Not rankedWeight 12%2 benchmarksVerified | 67.1 | Not ranked | Not available | 12% | 2 benchmarks | Verified |
| MultilingualWeight 7%0 benchmarksNot measured | Not measured | Not ranked | Not available | 7% | 0 benchmarks | Not measured |
| Inst. FollowingWeight 5%0 benchmarksNot measured | Not measured | Not ranked | Not available | 5% | 0 benchmarks | Not measured |
| MathWeight 5%0 benchmarksNot measured | Not measured | Not ranked | Not available | 5% | 0 benchmarks | Not measured |
Coding opens by default. The marker compares each value with the best source-verified result in the catalog; provisional leaders do not set the reference. Expand the remaining categories for every published row.
| Benchmark | Score | Versus best verified row | Gap | Weight | Evidence |
|---|---|---|---|---|---|
| SciCodeScientific Code Benchmark | Score58.9% | Versus best verified row Best verified: Sakana Fugu · 60.1% | Gap1.2 behind | WeightWeighted 10% | Provider exact |
| DeepSWE | Score67.7% | Versus best verified row Best verified: Muse Spark 1.3 · 75.4% | Gap7.7 behind | WeightDisplay only | Provider exact |
| Terminal-Bench 2.1Terminal-Bench 2.1 (provider run) | Score85.0% | Versus best verified row Best verified: SWE-2 · 92.8% | Gap7.8 behind | WeightDisplay only | Provider exact |
| ProgramBenchProgramBench: Can Language Models Rebuild Programs From Scratch? | Score80.5% | Versus best verified row Best verified: Claude Opus 5 · 93.0% | Gap12.5 behind | WeightDisplay only | Provider exact |
| sweMarathon | Score72.7% | Versus best verified row Best verified: Step 5 Preview · 72.7% | GapBest verified | WeightDisplay only | Provider exact |
| MLS-Bench Lite | Score40.5% | Versus best verified row Best verified: Kimi K3 · 48.3% | Gap7.8 behind | WeightDisplay only | Provider exact |
| Benchmark | Score | Versus best verified row | Gap | Weight | Evidence |
|---|---|---|---|---|---|
| BrowseComp | Score88.7% | Versus best verified row Best verified: Atria Dawn Preview · 92.5% | Gap3.8 behind | WeightWeighted 25% | Provider exact |
| AutomationBench | Score44.0% | Versus best verified row Best verified: DeepSeek V4.1 Flash · 54.8% | Gap10.8 behind | WeightWeighted 10% | Provider exact |
| Terminal-Bench 2.1Terminal-Bench 2.1 (provider run) | Score85.0% | Versus best verified row Best verified: SWE-2 · 92.8% | Gap7.8 behind | WeightDisplay only | Provider exact |
| Terminal-Bench 4.0 | Score33.30% | Versus best verified row Best verified: Claude Mythos 5.1 · 60.90% | Gap27.6 behind | WeightDisplay only | Provider exact |
| CyberGym | Score84.7% | Versus best verified row Best verified: DeepSeek V4.1 Flash · 88.1% | Gap3.4 behind | WeightDisplay only | Provider exact |
| Toolathlon-Verified | Score74.1% | Versus best verified row Best verified: Claude Opus 5 · 80.6% | Gap6.5 behind | WeightDisplay only | Provider exact |
| MCP Atlas | Score85.6% | Versus best verified row Best verified: Muse Spark 1.1 · 88.1% | Gap2.5 behind | WeightDisplay only | Provider exact |
| JobBench | Score59.0% | Versus best verified row Best verified: Muse Spark 1.3 · 64.9% | Gap5.9 behind | WeightDisplay only | Provider exact |
| APEX-Agents | Score37.8% | Versus best verified row Best verified: Grok 4.6 · 57.5% | Gap19.7 behind | WeightDisplay only | Provider exact |
| DRACOData Research and Analysis with Complex Operations | Score83.3% | Versus best verified row Best verified: Claude Opus 5 · 88.6% | Gap5.3 behind | WeightDisplay only | Provider exact |
| Agents' Last Exam | Score29.5% | Versus best verified row Best verified: GPT-6 Astra · 59.3% | Gap29.8 behind | WeightDisplay only | Provider exact |
| Benchmark | Score | Versus best verified row | Gap | Weight | Evidence |
|---|---|---|---|---|---|
| CritPtCritical Physics Tasks | Score20.9% | Versus best verified row Best verified: GPT-6 Astra · 31.7% | Gap10.8 behind | WeightDisplay only | Provider exact |
| Benchmark | Score | Versus best verified row | Gap | Weight | Evidence |
|---|---|---|---|---|---|
| MMMU-ProMassive Multi-discipline Multimodal Understanding Pro | Score76% | Versus best verified row Best verified: Gemini 3.5 Flash · 83.6% | Gap7.6 behind | WeightWeighted 40% | Provider exact |
| OfficeQA Pro | Score60.3% | Versus best verified row Best verified: Claude Opus 5 · 66.9% | Gap6.6 behind | WeightWeighted 25% | Provider exact |
| Benchmark | Score | Versus best verified row | Gap | Weight | Evidence |
|---|---|---|---|---|---|
| HLEHumanity's Last Exam | Score46.5% | Versus best verified row Best verified: Claude Fable 5.1 · 65% | Gap18.5 behind | WeightWeighted 35% | Provider exact |
| GPQA-DGPQA Diamond | Score93.5% | Versus best verified row Best verified: GPT-6 Astra · 96.0% | Gap2.5 behind | WeightDisplay only | Provider exact |
Each documented value carries its source. Missing fields stay visible as not sourced or not published, rather than disappearing from the page.
The sequence follows explicit supersedes links. A successor's displayed score stays at least 0.1 points above its predecessor; raw benchmark rows do not move. Scores and prices remain blank when the corresponding public row or first-party rate is unavailable.
Sep 20, 2026 · you are here
Step 5 PreviewNot publicly ranked · $1 / $2.7
preview · Preview
The visual layer above carries the decisions. These notes preserve the model, ranking, coverage, and family context behind the numbers.
We track Step 5 Preview, but the public leaderboard excludes this profile until enough non-generated benchmark coverage is available. Only published rows appear above.
Step 5 Preview has no verified publication yet for weight access. Its 1M context window is documented separately from that pending weight status. The profile records its reasoning mode as reasoning.
Available through StepFun's Open Platform API as `step-5-preview`. StepFun says it will release open weights on October 15; no checkpoint or license is published yet.
Official exact-value snapshot from StepFun's Step 5 Preview launch table, using the published High reasoning setting. We map only rows with an existing compatible benchmark lane and keep this API-hosted preview out of ranking coverage while independent or protocol-aligned results arrive. StepFun-developed StepCodeBench and FinStepBench rows, the HLE-with-tools text-only subset, GDP.pdf, and other provider-specific or protocol-ambiguous results stay outside the scored fields. StepFun says open weights will be released on October 15 but has not published a checkpoint or license.
22 of 447 tracked benchmark slots currently have displayable evidence. Missing categories stay blank.
Its strongest eligible category is Multimodal & Grounded at #28. particularly strong for screenshots, documents, charts, and grounded multimodal workflows.
StepFun · Model release
Radar confirmed these at the source. Use Step 5 Preview in your work? Explore Radar to follow supported changes and choose your alerts.
Step 5 Preview has 22 source-displayable benchmark rows, but it does not qualify for a public overall rank. The available rows remain visible by category without being converted into a site-wide score. Missing evidence stays blank instead of being estimated from an earlier model.
Step 5 Preview has source-displayable benchmark coverage for knowledge and understanding, but the public category table does not assign it a rank there. The individual rows remain available for inspection. A missing category position means the evidence threshold was not met; it does not convert the model's unmeasured work into a zero.
Step 5 Preview has source-displayable benchmark coverage for coding and programming, but the public category table does not assign it a rank there. The individual rows remain available for inspection. A missing category position means the evidence threshold was not met; it does not convert the model's unmeasured work into a zero.
Step 5 Preview has source-displayable benchmark coverage for reasoning and logic, but the public category table does not assign it a rank there. The individual rows remain available for inspection. A missing category position means the evidence threshold was not met; it does not convert the model's unmeasured work into a zero.
Step 5 Preview has source-displayable benchmark coverage for agentic tool use and computer tasks, but the public category table does not assign it a rank there. The individual rows remain available for inspection. A missing category position means the evidence threshold was not met; it does not convert the model's unmeasured work into a zero.
Step 5 Preview ranks #28 out of 49 eligible models for multimodal and grounded tasks, with a public category score of 61.2/100. Higher-ranked alternatives are available for workloads where this category decides the choice. Check the underlying rows before treating the aggregate as a workload guarantee.
No. Step 5 Preview currently has 34 source-displayable rows across 447 tracked benchmark slots. The profile exposes published, non-generated evidence and leaves missing categories blank until an exact evaluation is available. Coverage describes how much was measured; it is not a penalty added to an individual benchmark result.
Step 5 Preview has a documented context window of 1M. That figure is the maximum combined prompt and retained-conversation space reported for this exact model; it is not the maximum output length. The profile keeps output limits separate because providers often publish those limits independently.
Related resources
Last updated September 21, 2026. Runtime fields remain blank until a sourced snapshot exists.
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