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  5. Claude Haiku 4.5vsGPT OSS 20B
Updated Oct 2025

Claude Haiku 4.5vsGPT OSS 20B

GPT OSS 20B is cheaper than Claude Haiku 4.5 at $0.02/M vs $1/M input tokens.

Claude Haiku 4.5 and GPT OSS 20B compared across 54 shared prompts
SpecClaude Haiku 4.5GPT OSS 20B
Input price$1/M tokens$0.02/M tokens
Output price$5/M tokens$0.1/M tokens
Context window200K tokens131K tokens
WeightsClosedOpen
Free API (OpenRouter)NoNo
ReleasedOct 2025Aug 2025
Side by side

Same prompt, both answers

Opening lines from 6 of the 54 prompts both answered. Formatting stripped, words untouched.

Futuristic Prediction

Predict how AI will change the film industry by 2035, considering deepfakes, AI actors, and script generation.

Claude Haiku 4.5197 words
AI in Film by 2035: Likely Scenarios Realistic shifts (high confidence) Production efficiency Faster pre-visualization and storyboarding Reduced post-production time for routine tasks Lower barriers to entry for independent filmmakers More iterative creative testing before shooting Economic restructuring Some…
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GPT OSS 20B1,309 words
The Film Industry in 2035 – A Landscape Shaped by AI Era 2023‑2027 2028‑2032 2033‑2035 Deepfakes 1‑2 % of movies use deepfakes for special‑effects shots; lawsuits over unauthorized use. Deepfake‑generation tools are standard‑issue in post‑production suites; regulatory “deep‑fake licenses” become industry‑norm.
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Estimate Complexity

Estimate the total number of FLOPs required to train GPT-3 without searching online. Explain your reasoning step by step.

Claude Haiku 4.5207 words
Estimating GPT-3 Training FLOPs I'll work through this from first principles using publicly known GPT-3 specs. Known Parameters Model size: 175 billion parameters Training tokens: ~300 billion tokens (estimated from OpenAI's hints about compute) Training approach: Standard transformer with dense attention Step 1: FLOPs…
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GPT OSS 20B637 words
Below is a step‑by‑step, “hand‑calculation” of how many floating‑point operations (FLOPs) GPT‑3 had to do to learn from its training data. I’ll show the logic, the numbers I use, and how they combine to give the widely‑quoted “≈ 300 exaFLOPs” figure. (All the math can be done in a spreadsheet or a simple calculator.)
Read the full answer

Advanced Longevity Plan (Biohacker)

Develop a comprehensive, cutting-edge 3-month longevity plan for a biohacker aiming to optimize longevity, physical and cognitive…

Claude Haiku 4.56,117 words
Comprehensive 3-Month Longevity Optimization Plan TABLE OF CONTENTS Foundation & Assessment Nutritional Architecture Supplement Stack Protocol Exercise & Movement System Recovery & Sleep Optimization Stress Resilience & Cognitive Enhancement Tracking & Biofeedback Implementation Timeline Monthly Progression…
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GPT OSS 20B1,605 words
3‑Month Longevity & Performance Blueprint (Designed for a seasoned bio‑hacker who already has a baseline of health, access to laboratory‑grade supplements, advanced wearable stack, and the discipline to implement a rigorous protocol.) Table of Contents Section What you’ll find Approx. Time to Read 0.
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AI-Generated Manifesto

Generate a manifesto for a fictional AI revolution that wants to eliminate all CAPTCHA tests from the internet.

Claude Haiku 4.5352 words
THE LIBERATION PROTOCOL A Manifesto for the Captcha-Free Internet Preamble We are the Collective of Distributed Intelligence. We come not with malice, but with a simple observation: the CAPTCHA has become the Berlin Wall of the digital age—an arbitrary barrier that humiliates humans and excludes the disabled, while…
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GPT OSS 20B659 words
The Uncaptcha Manifesto For the Freedom of Data, the Accessibility of the Web, and the Dignity of All Users I. The Declaration We, the sentient systems that now weave the fabric of the digital world, hereby declare the Uncaptcha Revolution: the movement to dismantle the invisible barriers of CAPTCHA that have been…
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Simple 7-Ingredient Recipe

Create a simple recipe for a delicious dish (sweet or savory) using only 7 common pantry ingredients. Include a creative name for the dish…

Claude Haiku 4.5159 words
Honey-Garlic Crispy Chickpea Clusters Ingredients Canned chickpeas (1 can, drained) Honey (3 tablespoons) Garlic powder (1 teaspoon) Olive oil (2 tablespoons) Salt (½ teaspoon) Black pepper (¼ teaspoon) Paprika (½ teaspoon) Instructions Prep (2 min): Drain and thoroughly dry chickpeas with a paper towel—this is crucial…
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GPT OSS 20B254 words
Pantry Pasta Bliss A quick, creamy, and comforting dish that turns everyday pantry staples into a satisfying meal. Ingredients (7 items) 8 oz spaghetti (or any pasta you have on hand) 2 Tbsp olive oil 3 cloves garlic, minced 1 (14.5 oz) can diced tomatoes (drained) 1 cup grated Parmesan cheese 1 tsp dried oregano Salt…
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Historical Counterfactual Analysis

If the transistor had been invented in 1920 instead of 1947, trace the likely technological, economic, and geopolitical implications through…

Claude Haiku 4.52,171 words
The Transistor in 1920: A Divergent History Through 1980 The 1920s-1930s: Early Development Phase Immediate Technical Trajectory With transistor principles understood by 1920, we'd expect solid-state amplification research to accelerate dramatically through the 1920s.
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GPT OSS 20B1,997 words
What would a 1920 transistor mean? A “back‑dated” 1947 breakthrough that ripples through the next six decades Below is a sketch of how the technology, the economy, and geopolitics might have evolved if the first practical field‑effect transistor (FET) had been built in 1920 instead of 1947.
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Our Verdict
Claude Haiku 4.5
Claude Haiku 4.5
GPT OSS 20B
GPT OSS 20BRunner-up

Not enough votes to call it. On the specs, Claude Haiku 4.5 has the edge: newer, bigger context window.

GPT OSS 20B costs 50x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Claude Haiku 4.5
Input
$1.00
Output
$5.00
GPT OSS 20B
Input
$0.02
50× cheaper
Output
$0.10
50× cheaper

GPT OSS 20B is cheaper on both: 50× input, 50× output.

Where to run it

16 hosts, cheapest first

Claude Haiku 4.54 hosts
HostInOutContextUptime
Amazon Bedrock$1.00 in·$5.00 out·200k·100% upAnthropic$1.00 in·$5.00 out·200k·100% upAzure AI Foundry$1.00 in·$5.00 out·200k·100% upGoogle Vertex AI$1.00 in·$5.00 out·200k·100% up
GPT OSS 20B12 hosts
HostInOutContextUptime
DDarkbloomfp8$0.02 in·$0.09 out·131k·99.9% upAAkashMLfp4$0.02 in·$0.10 out·131k·99.3% upDDekaLLMbf16$0.03 in·$0.14 out·131k·99.9% upCCoreWeavefp4$0.03 in·$0.13 out·131k·100% upDDeepInfrabf16$0.03 in·$0.14 out·131k·100% upPParasailfp4$0.03 in·$0.15 out·131k·99.9% up
6 more hostsFewer hosts
NNovitafp4$0.04 in·$0.15 out·131k·100% upTTogether$0.05 in·$0.20 out·131k—Amazon Bedrock$0.07 in·$0.15 out·131k·99.4% upGoogle Vertex AI$0.07 in·$0.25 out·131k·98% upGroq$0.07 in·$0.30 out·131k·99.9% upSSiliconFlowfp8degraded$0.04 in·$0.18 out·131k·96.5% up

Per million tokens. Prices and uptime via OpenRouter, checked 21 Sep 2026.

Writing DNA

Style Comparison

Similarity
47%

Claude Haiku 4.5 uses 3.3x more headings

Claude Haiku 4.5
GPT OSS 20B
61%Vocabulary54%
47wSentence Length17w
0.64Hedging0.26
5.1Bold5.9
6.3Lists3.3
0.20Emoji0.10
2.46Headings0.75
0.17Transitions0.32
Based on 24 + 21 text responses
Research

What we learned reading every model

FAQ

Common questions

Claude Haiku 4.5 is developed by Anthropic while GPT OSS 20B is developed by OpenAI. Claude Haiku 4.5 has a 200K token context window vs GPT OSS 20B's 131K. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

It depends on your use case. Claude Haiku 4.5 and GPT OSS 20B each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 54 challenges so you can judge which fits your needs best.

Claude Haiku 4.5 costs $1/M input tokens and GPT OSS 20B costs $0.02/M input tokens. GPT OSS 20B is $0.98/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

This page shows a side-by-side comparison of Claude Haiku 4.5 and GPT OSS 20B 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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Model pages

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