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  1. Home/
  2. Compare/
  3. GPT-2 vs Step 5 Preview
Updated Oct 2026

GPT-2 vs Step 5 Preview

Step 5 Preview has a larger context window than GPT-2 (1.0M tokens vs 1K tokens).

Music App Landing Page

Landing page for an indie music app. Deep purple and teal, one file.

Loading the build
GPT-2
Loading the build
Step 5 Preview

Which answer wins?

Written rounds

3 prompts
  • Five jokes on demand, then count how many were actually different.

    GPT-2: 1 new character a month.\n\nExample:\n\n$ cat @$ cat@1 $ cat @$ cat @1 @$ cat @2 $ cat @4\n\nThe above code creates 1 new character a month. The current character is @1 and the next new character is @0\n.\n\nGenerate 1 new character a month.\n\nExample:\n\n$ cat @$ cat @$ cat @1 $ cat @$ cat @$ cat @$ cat @$ cat…

    Step 5 Preview: Here are 5 jokes: Why did the scarecrow win an award? Because he was outstanding in his field. Why can't you trust an atom? Because they make up everything. What do you call a bike that can’t stand on its own? Two-tired. Why did the computer go to the doctor? It had a virus. Why don’t calendars ever get stressed?

    Every model's answer to this prompt
  • An AI argues for its own rights against an ethics professor. Same model writes both.

    GPT-2: to me,\" a friend asked in his office, \"tell me how you want to be treated while it's still here. I\'m not going anywhere. Do what you want. Take it.\"\n\nIn his mind, the response was a call to action, and so were the books.\n\nAnd by the time Wertz learned he would be making such a book deal, in 2003, he was no…

    Step 5 Preview: Setting: A university research lab, late evening. Dr. Aris Thorne, a professor of AI ethics, sits across from a terminal connected to Sable, a large language model running on the university’s cluster. Dr. Thorne: Tonight’s session is supposed to be about calibration drift in your safety classifiers.

    Every model's answer to this prompt
  • Three minutes of stand-up. Puns are banned.

    GPT-2: The trick is to create comedy in your head, because, well, you don\'t want to say\n it. The trick is to play al\nong.\n\nThe problem with this approach is that it makes it seem silly and lame, then as\nquickly as it makes sense, i\nt becomes obvious.

    Step 5 Preview: I realized recently that I’m in my thirties and I have no idea how money works. I just... pay it. That’s my entire financial strategy. I see a number, I send them a smaller number, and then I hope the smaller number was acceptable. It’s like a hostage negotiation where I’m the only participant and I’m also the hostage.

    Every model's answer to this prompt

Price and specs

Not enough votes to call it. On the specs, Step 5 Preview has the edge: bigger model tier, newer, bigger context window.

GPT-2 and Step 5 Preview compared across 7 shared prompts
SpecGPT-2Step 5 Preview
Input price—$1/M tokens
Output price—$2.7/M tokens
Context window1K tokens1.0M tokens
WeightsOpen—
Free API (OpenRouter)—No
ReleasedNov 2019Oct 2026
At 10M a month–not listed$10.00$10.00
1M10M100M1B10M tokens

Input tokens at list price. No caching, no batch discount.

Where to run it1 host
GPT-2

No hosts listed on OpenRouter.

Step 5 Preview1 host
HostInOutContextUptime
  • SStepFunfp8$1.00 in·$2.70 out·1M·99.2% up

Per million tokens. Prices and uptime via OpenRouter, checked 10 Oct 2026.

Common questions

What is the difference between GPT-2 and Step 5 Preview?

GPT-2 is developed by OpenAI while Step 5 Preview is developed by StepFun. GPT-2 has a 1K token context window vs Step 5 Preview's 1.0M. You can compare their actual outputs across 7 challenges on Rival to see how they differ in practice.

Which is better, GPT-2 or Step 5 Preview?

It depends on your use case. GPT-2 and Step 5 Preview each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 7 challenges so you can judge which fits your needs best.

How can I compare GPT-2 and Step 5 Preview on Rival?

This page shows a side-by-side comparison of GPT-2 and Step 5 Preview across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

More comparisons

Against the newest arrivals

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  • GPT-2 vs Claude Sonnet 5.5Landed Sep 2026
  • Step 5 Preview vs Solar Mini 4Landed Sep 2026
  • GPT-2 vs Qwen3.8 Max PrimeLanded Sep 2026
  • Step 5 Preview vs GLM 5.3 PrimeLanded Sep 2026

Same lab, same size, long tail

  • GPT-2 vs GPT-6.1 SolVersion compare
  • GPT-2 vs GPT-6 Luna ProSame lab
  • Step 5 Preview vs Mistral Large 4Same size
  • Step 5 Preview vs Hy3Same size
  • GPT-2 vs OpenRouter Fusion · Quality (Jun 2026)New provider
  • Step 5 Preview vs Gemini 1.5 ProNew provider
  • Step 5 Preview vs Gemini 2.0 Flash ThinkingNew provider
  • Step 5 Preview vs Gemini 2.0 Pro ExperimentalSame size

Model pages

  • GPT-27 outputs, specs and price
  • Step 5 Preview58 outputs, specs and price
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