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  5. Claude 2vsClaude Opus 4.8
Updated May 2026

Claude 2vsClaude Opus 4.8

Claude Opus 4.8 is cheaper than Claude 2 at $5/M vs $11.02/M input tokens.

Claude 2 and Claude Opus 4.8 compared across 5 shared prompts
SpecClaude 2Claude Opus 4.8
Input price$11.02/M tokens$5/M tokens
Output price$32.68/M tokens$25/M tokens
Context window100K tokens1.0M tokens
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedJun 2023May 2026
Side by side

Same prompt, both answers

Opening lines from 2 of the 5 prompts both answered. Formatting stripped, words untouched.

Beginner's Longevity Plan

Outline a simple, actionable 1-month plan for someone starting their journey towards better health and longevity. Focus on 3 key areas…

Claude 2257 words
Here is a 1-month beginner health and longevity plan focused on diet, exercise, and sleep: Diet: Eliminate sugary drinks and limit sweets. Replace with water and fruits. Eat more veggies. Aim for 1-2 cups with each meal. Focus on dark leafy greens, broccoli, carrots. Increase fiber intake.
Read the full answer
Claude Opus 4.8316 words
1-Month Health & Longevity Starter Plan A realistic, beginner-friendly approach focusing on three pillars: Movement, Nutrition, and Sleep. The goal is to build sustainable habits, not perfection. 🏃 Pillar 1: Movement Goal: Make daily activity automatic.
Read the full answer

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 2146 words
Here is a 7-ingredient recipe for a sweet dish I'll call "Cinnamon Apple Surprise": Cinnamon Apple Surprise Ingredients: 3 apples, cored and sliced 1⁄4 cup brown sugar 1⁄4 cup all-purpose flour 1 tsp ground cinnamon 1⁄4 tsp nutmeg 2 tbsp butter, melted 1 refrigerated pie crust Instructions: Preheat oven to 375°F.
Read the full answer
Claude Opus 4.8196 words
Cinnamon Sugar Pull-Apart Bites A warm, gooey treat that tastes like a cinnamon roll but comes together in minutes! Ingredients (7 total) 2 cups all-purpose flour 1 tablespoon baking powder 1 teaspoon salt ¾ cup milk 4 tablespoons butter (melted, divided) ½ cup sugar 2 teaspoons ground cinnamon Instructions Preheat…
Read the full answer
Our Verdict
Claude Opus 4.8
Claude Opus 4.8
Claude 2
Claude 2Runner-up

Not enough votes to call it. On the specs, Claude Opus 4.8 has the edge: bigger model tier, newer, bigger context window.

Slight edge

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Claude 2
Input
$11.02
Output
$32.68
Claude Opus 4.8
Input
$5.00
2.2× cheaper
Output
$25.00
1.3× cheaper

Claude Opus 4.8 is cheaper on both: 2.2× input, 1.3× output.

Where to run it

4 hosts

Claude 2

No hosts listed on OpenRouter.

Claude Opus 4.84 hosts
HostInOutContextUptime
Amazon Bedrock$5.00 in·$25.00 out·1M·99.9% upAzure AI Foundry$5.00 in·$25.00 out·1M·98.8% upAnthropic$5.00 in·$25.00 out·1M·100% upGoogle Vertex AI$5.00 in·$25.00 out·1M·99.9% up

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

Writing DNA

Style Comparison

Similarity
37%

Claude Opus 4.8 uses 45.9x more hedging

Claude 2
Claude Opus 4.8
65%Vocabulary60%
13wSentence Length19w
0.00Hedging0.46
0.0Bold4.7
10.2Lists3.2
0.00Emoji0.78
0.00Headings1.15
0.00Transitions0.04
Based on 2 + 27 text responses
Research

What we learned reading every model

FAQ

Common questions

Both are developed by Anthropic but target different use cases. Claude 2 has a 100K token context window vs Claude Opus 4.8's 1.0M. You can compare their actual outputs across 5 challenges on Rival to see how they differ in practice.

It depends on your use case. Claude 2 and Claude Opus 4.8 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 5 challenges so you can judge which fits your needs best.

Claude 2 costs $11.02/M input tokens and Claude Opus 4.8 costs $5/M input tokens. Claude Opus 4.8 is $6.02/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 2 and Claude Opus 4.8 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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