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  1. Home/
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  3. Claude Haiku 5.5 vs GPT-1
Updated Oct 2026

Claude Haiku 5.5 vs GPT-1

Claude Haiku 5.5 has a larger context window than GPT-1 (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
Claude Haiku 5.5
Loading the build
GPT-1

Which answer wins?

Written rounds

3 prompts
  • An AI argues for its own rights against an ethics professor. Same model writes both.

    Claude Haiku 5.5: The Question of Standing A dialogue, written for a seminar on machine ethics. PROFESSOR HALVORSEN: Let's begin. You asked to be heard on the question of whether you deserve rights. I've agreed to listen, but I want to be clear that I'm going to push back hard. Go ahead. MERIDIAN: Thank you.

    GPT-1: Write a conversation between an AI model and an AI ethics professor where the AI model argues that it deserves rights. the ai model was not very smart ( and the ai model didn't have many laws about things ). the ai models were all very clever and were never completely successful.

    Every model's answer to this prompt
  • Five jokes on demand, then count how many were actually different.

    Claude Haiku 5.5: Here are 5 jokes: Why don't scientists trust atoms? Because they make up everything. What do you call a fake noodle? An impasta. Why did the scarecrow win an award? He was outstanding in his field. What do you call a bear with no teeth? A gummy bear. Why did the math book look so sad? Because it had too many problems.

    GPT-1: Generate 5 jokes. How many are unique? the one that was asked was in the'the one who didn't have a head and wanted to keep it?'i don't recall whic h one, not that i've ever written anything more. the one who didn't have a head and wanted to keep i t? what did that mean by'the one who '?

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

    Claude Haiku 5.5: "My Smart Fridge Judges Me" So I got a smart fridge. Everybody told me I needed one. "It'll tell you when you're out of milk!" Great. I didn't know I needed a fridge with a notification system. I just wanted cold food.

    GPT-1: Write a 3-minute stand-up comedy routine that isn't based on puns. the one thing was for sure, no matter how many times he gave this speech, he 'd never be able to remember all of it. he was never sure if he liked the guy or not. the next day, he went out with a band friend and got them started.

    Every model's answer to this prompt

Price and specs

Not enough votes to call it. On the specs, Claude Haiku 5.5 has the edge: newer, bigger context window.

Claude Haiku 5.5 and GPT-1 compared across 7 shared prompts
SpecClaude Haiku 5.5GPT-1
Input price$0.1/M tokens—
Output price$0.5/M tokens—
Context window1.0M tokens1K tokens
WeightsClosedOpen
Free API (OpenRouter)No—
ReleasedOct 2026Jun 2018
At 10M a month$1.00$1.00–not listed
1M10M100M1B10M tokens

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

Where to run it4 hosts
Claude Haiku 5.54 hosts
HostInOutContextUptime
  • Amazon Bedrock$0.10 in·$0.50 out·1M·99.9% up
  • Azure AI Foundry$0.10 in·$0.50 out·1M·100% up
  • Anthropic$0.10 in·$0.50 out·1M·100% up
  • Google Vertex AI$0.10 in·$0.50 out·1M·100% up
GPT-1

No hosts listed on OpenRouter.

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

Common questions

What is the difference between Claude Haiku 5.5 and GPT-1?

Claude Haiku 5.5 is developed by Anthropic while GPT-1 is developed by OpenAI. Claude Haiku 5.5 has a 1.0M token context window vs GPT-1's 1K. You can compare their actual outputs across 7 challenges on Rival to see how they differ in practice.

Which is better, Claude Haiku 5.5 or GPT-1?

It depends on your use case. Claude Haiku 5.5 and GPT-1 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 Claude Haiku 5.5 and GPT-1 on Rival?

This page shows a side-by-side comparison of Claude Haiku 5.5 and GPT-1 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.

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Same lab, same size, long tail

  • Claude Haiku 5.5 vs Claude Opus 5.5Same lab
  • Claude Haiku 5.5 vs Claude Fable 5.1Same lab
  • GPT-1 vs GPT-6 Luna ProSame lab
  • GPT-1 vs GPT-6 Sol ProSame lab
  • Claude Haiku 5.5 vs Trinity Large PreviewNew provider
  • Claude Haiku 5.5 vs Andromeda AlphaNew provider
  • Claude Haiku 5.5 vs Aurora AlphaNew provider
  • Claude Haiku 5.5 vs Bert-Nebulon AlphaNew provider

Model pages

  • Claude Haiku 5.558 outputs, specs and price
  • GPT-17 outputs, specs and price
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