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  5. Mercury 2vsTernary Bonsai 2 27B
Updated Sep 2026

Mercury 2vsTernary Bonsai 2 27B

Ternary Bonsai 2 27B is cheaper than Mercury 2 at $0.075/M vs $0.25/M input tokens.

Mercury 2 and Ternary Bonsai 2 27B compared across 9 shared prompts
SpecMercury 2Ternary Bonsai 2 27B
Input price$0.25/M tokens$0.075/M tokens
Output price$0.75/M tokens$0.5/M tokens
Context window128K tokens262K tokens
Free API (OpenRouter)NoNo
ReleasedMar 2026Sep 2026
Side by side

Same prompt, both answers

Opening lines from 4 of the 9 prompts both answered. Formatting stripped, words untouched.

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…

Mercury 2291 words
Golden‑Crunch Oatmeal Squares A sweet, chewy snack that comes together with just seven pantry staples. Ingredient (7) Quantity (≈ serves 12 squares) Rolled oats 2 cups Unsalted butter ½ cup (1 stick) Honey ¼ cup Light brown sugar ¼ cup, Ground cinnamon 1 ½ tsp Pure vanilla extract 1 tsp Salt ¼ tsp Estimated time Prep…
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Ternary Bonsai 2 27B358 words
🍫 Velvet Hour Skillet Cakes A one-pan, one-pan-pour, one-lick-the-spoon kind of dessert. Fluffy, deeply chocolate, and done before your coffee goes cold. Serves: 2–3 Prep: 10 min Cook: 12–15 min Total: ~25 min The 7 Ingredients # Ingredient Amount 1 All-purpose flour ¾ cup 2 Granulated sugar ⅓ cup 3 Unsweetened cocoa…
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Startup Pitch Teardown

Here's a pitch deck summary for a startup called "MindMeld AI": **Slide 1 - Vision:** "We're building the future of human-AI collaboration.…

Mercury 2900 words
Below are the three statements that, in a typical investor‑review, would raise the most skepticism, why they are vulnerable, and concrete ways to turn them into credible, fundable talking points. 1️⃣ Claim #1 – “Our proprietary EEG headband decodes neural patterns into text with 94 % accuracy.”
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Ternary Bonsai 2 27B1,109 words
The 3 Weakest Claims in the MindMeld AI Pitch "FDA Clearance (40% of $15M)" — Slide 7 The claim: They're allocating $6M (40% of the entire raise) toward "FDA clearance" for a consumer EEG headband that decodes thoughts into text for everyday smartphone use.
Read the full answer

Explain Like I'm a Specific Expert

Explain how a large language model (like GPT or Claude) learns and generates text to each of these three audiences: 1. **An experienced…

Mercury 2896 words
1. Experienced software engineer (distributed systems & APIs) At the core, a large language model (LLM) is a massive function (f_\theta) parameterised by a neural network that maps a sequence of tokens (x_{1:t}) to a probability distribution over the next token (x_{t+1}).
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Ternary Bonsai 2 27B1,636 words
For the Distributed-Systems Engineer Think of the model as a single, enormous state object—roughly 150 billion floating-point parameters—that has been trained offline over months on a cluster of thousands of GPUs.
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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…

Mercury 2920 words
One‑Month “Kick‑Start” Blueprint for Health & Longevity Pick three pillars – Nutrition, Movement, Sleep – and build daily habits that are easy to start, track, and keep.
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Ternary Bonsai 2 27B729 words
1-Month Foundation Plan: Health & Longevity How to Use This Plan Pick one area per week's focus while maintaining the other two at a baseline level. The point is consistency over intensity. You're building a habit identity, not a transformation.
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Our Verdict
Ternary Bonsai 2 27B
Ternary Bonsai 2 27B
Mercury 2
Mercury 2Runner-up

Not enough votes to call it. On the specs, Ternary Bonsai 2 27B has the edge: newer, bigger context window.

Too close to call
API pricing

Cost per 1M tokens

Mercury 2
Input
$0.25
Output
$0.75
Ternary Bonsai 2 27B
Input
$0.07
3.3× cheaper
Output
$0.50
1.5× cheaper

Ternary Bonsai 2 27B is cheaper on both: 3.3× input, 1.5× output.

Where to run it

2 hosts

Mercury 21 host
HostInOutContextUptime
Inception$0.25 in·$0.75 out·128k·100% up
Ternary Bonsai 2 27B1 host
HostInOutContextUptime
DDarkbloomint4$0.07 in·$0.50 out·262k·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 22 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

Mercury 2 is developed by Inception while Ternary Bonsai 2 27B is developed by PrismML. Mercury 2 has a 128K token context window vs Ternary Bonsai 2 27B's 262K. You can compare their actual outputs across 9 challenges on Rival to see how they differ in practice.

It depends on your use case. Mercury 2 and Ternary Bonsai 2 27B each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 9 challenges so you can judge which fits your needs best.

Mercury 2 costs $0.25/M input tokens and Ternary Bonsai 2 27B costs $0.075/M input tokens. Ternary Bonsai 2 27B is $0.17/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 Mercury 2 and Ternary Bonsai 2 27B 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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