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Step 5 Preview by StepFun

Shares rank 63 of 72 language models by recommenders

Recommended for its price-performance and fast throughput on OpenRouter. Critics say it is verbose and its reasoning runs too long.

Recommended for its price-performance and fast throughput on OpenRouter. Critics say it is verbose and its reasoning runs too long.

11 people gave an opinion

recommend it
7
criticize it
4
approval share
64%
Each figure is one person. RecommendsCriticizes

Recommended in 2 of 13 months

  1. November 2025: not recommended
  2. December 2025: not recommended
  3. January 2026: not recommended
  4. February 2026: not recommended
  5. March 2026: not recommended
  6. April 2026: not recommended
  7. May 2026: not recommended
  8. June 2026: not recommended
  9. July 2026: not recommended
  10. August 2026: not recommended
  11. September 2026: recommended
  12. October 2026: recommended
  13. November 2026: not recommended (month in progress)

Why it doesn’t carry the badge

  • 7 people recommend itNeeds 10 or more, not met.
  • 1.7 recommenders for every criticNeeds 2 to 1 or better, not met.
  • Recommended in 2 of 13 monthsNeeds 4 or more, not met.

The same three rules apply to every product, and the badge can’t be bought. How the badge works

What people say about it

The reasons people give, with the number of comments that give each one. Open a reason to read what they said.

Why people recommend it

Each mark is one comment

  • Good price-performance for the cost

    “The price/performance looks interesting, though it also seems pretty verbose.”

    Comment from 19 Sep 2026 in “Stepfun Step 5 Preview (LLM): On AA Pareto frontier”

    “Pretty decent "API" rates for ~500M+ tokens on Step Fun 5”

    Comment from 20 Sep 2026 in “Step 5 Preview: Advancing the Pareto Frontier”
  • Fast, usable generation speed

    “The average speed is 115 tokens/sec according to OpenRouter.”

    Comment from 8 Oct 2026 in “Step 5 Preview, a 1M-context MoE from StepFun, shows up on OpenRouter”

    “I can get ~45tok/sec which is quite usable.”

    Comment from 9 Oct 2026 in “Step 5 Preview, a 1M-context MoE from StepFun, shows up on OpenRouter”

What people warn about

Each mark is one comment

  • Verbose output and overlong reasoning

    “The price/performance looks interesting, though it also seems pretty verbose.”

    Comment from 19 Sep 2026 in “Stepfun Step 5 Preview (LLM): On AA Pareto frontier”

    “A huge amount of waffly padding around a thesis that may or may not exist.”

    Comment from 20 Sep 2026 in “Step 5 Preview: Advancing the Pareto Frontier”

    “their model reasons too much and too long”

    Comment from 20 Sep 2026 in “Step 5 Preview: Advancing the Pareto Frontier”

Other language models people recommend

The four most recommended other language models, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.

Step 5 Preview by StepFun compared with 4 alternatives
ProductRecommendCriticizeApprovalMonthsOwnedBadge
Claude Opus3,3312,74655%134 mo156 owners—
OpenAI GPT1,20598755%136 mo47 owners—
Claude Sonnet85458659%136 mo46 owners—
DeepSeek V4 Flash82822379%81 mo24 ownersApproved
Step 5 Preview by StepFunThis page7464%2——
See all 72 language models, ranked

What people said

All 11 comments that mention it, newest first. Each links to the original comment.

“broken prompt responses, garbled repo state, derailed trajectories, hallunies”

CriticizesComment from 13 Oct 2026 in “Step 5 Preview, a 1M-context MoE from StepFun, shows up on OpenRouter”

“I can get ~45tok/sec which is quite usable.”

RecommendsComment from 9 Oct 2026 in “Step 5 Preview, a 1M-context MoE from StepFun, shows up on OpenRouter”

“Composite indices are only useful for model companies which want to build one horizontal capability for N use cases”

MixedComment from 9 Oct 2026 in “Step 5 Preview, a 1M-context MoE from StepFun, shows up on OpenRouter”

“It looks reasonable by open model standards”

RecommendsComment from 8 Oct 2026 in “Step 5 Preview, a 1M-context MoE from StepFun, shows up on OpenRouter”

“The average speed is 115 tokens/sec according to OpenRouter.”

MixedComment from 8 Oct 2026 in “Step 5 Preview, a 1M-context MoE from StepFun, shows up on OpenRouter”

“It doesn't look competitive along any dimension”

CriticizesComment from 8 Oct 2026 in “Step 5 Preview, a 1M-context MoE from StepFun, shows up on OpenRouter”

“their model reasons too much and too long”

MixedComment from 20 Sep 2026 in “Step 5 Preview: Advancing the Pareto Frontier”

“A huge amount of waffly padding around a thesis that may or may not exist.”

CriticizesComment from 20 Sep 2026 in “Step 5 Preview: Advancing the Pareto Frontier”

“600b-a27b doesn’t sound enticing.”

CriticizesComment from 20 Sep 2026 in “Step 5 Preview: Advancing the Pareto Frontier”

“Pretty decent "API" rates for ~500M+ tokens on Step Fun 5”

RecommendsComment from 20 Sep 2026 in “Step 5 Preview: Advancing the Pareto Frontier”

“The price/performance looks interesting, though it also seems pretty verbose.”

MixedComment from 19 Sep 2026 in “Stepfun Step 5 Preview (LLM): On AA Pareto frontier”

Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.