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  5. Grok 4 Fast (free)vsLing 3.0 Flash Sante (free)
Updated Sep 2026

Grok 4 Fast (free)vsLing 3.0 Flash Sante (free)

Grok 4 Fast (free) has a larger context window than Ling 3.0 Flash Sante (free) (2.0M tokens vs 262K tokens).

Grok 4 Fast (free) and Ling 3.0 Flash Sante (free) compared across 2 shared prompts
SpecGrok 4 Fast (free)Ling 3.0 Flash Sante (free)
Input priceFreeFree
Output priceFreeFree
Context window2.0M tokens262K tokens
Free API (OpenRouter)NoYes (1 provider)
ReleasedSep 2025Sep 2026
Side by side

Same prompt, both answers

Opening lines from every prompt 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…

Grok 4 Fast (free)849 words
1-Month Plan for Better Health and Longevity This beginner-friendly plan focuses on three foundational areas: diet, exercise, and sleep. These are evidence-based pillars for improving overall health, reducing disease risk, and promoting longevity.
Read the full answer
Ling 3.0 Flash Sante (free)240 words
Here’s a low-pressure, 4-week blueprint. Pick one area to start (Week 1), then stack the next. Consistency beats intensity. Sleep (The Longevity Foundation) Week 1: Set a fixed wake time (±30 min, even weekends). Week 2: No caffeine after 2 pm; stop screens 30 min before bed.
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…

Grok 4 Fast (free)240 words
Pantry Hero Pasta Primavera This simple, savory one-pot pasta dish transforms basic staples into a flavorful, garlicky tomato sauce that's comforting and ready in under 30 minutes.
Read the full answer
Ling 3.0 Flash Sante (free)137 words
The Midnight Cookie Vault A gooey, chocolatey skillet cookie that feels like a secret treasure. Ingredients (7): Butter (½ cup, softened) Brown sugar (¾ cup) All-purpose flour (1¼ cups) Eggs (2 large) Semi-sweet chocolate chips (½ cup) Baking powder (1 tsp) Vanilla extract (1 tsp) Instructions: Preheat oven to 350°F…
Read the full answer
Our Verdict
Grok 4 Fast (free)
Grok 4 Fast (free)
Ling 3.0 Flash Sante (free)
Ling 3.0 Flash Sante (free)

Not enough votes to call it. On the specs, nothing separates them.

Too close to call
API pricing

Cost per 1M tokens

Grok 4 Fast (free)
Input
$0.000
Output
$0.000
Ling 3.0 Flash Sante (free)
Input
$0.000
Output
$0.000
Where to run it

1 host

Grok 4 Fast (free)

No hosts listed on OpenRouter.

Ling 3.0 Flash Sante (free)1 host
HostInOutContextUptime
NNovita$0 in·$0 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

Grok 4 Fast (free) is developed by xAI while Ling 3.0 Flash Sante (free) is developed by inclusionAI. Grok 4 Fast (free) has a 2.0M token context window vs Ling 3.0 Flash Sante (free)'s 262K. You can compare their actual outputs across 2 challenges on Rival to see how they differ in practice.

It depends on your use case. Grok 4 Fast (free) and Ling 3.0 Flash Sante (free) each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 2 challenges so you can judge which fits your needs best.

Grok 4 Fast (free) costs $0/M input tokens and Ling 3.0 Flash Sante (free) costs $0/M input tokens. Ling 3.0 Flash Sante (free) is $0.00/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 Grok 4 Fast (free) and Ling 3.0 Flash Sante (free) 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

Grok 4 Fast (free) logo
Grok 4 Fast (free)35 outputs, specs and price
Ling 3.0 Flash Sante (free) logo
Ling 3.0 Flash Sante (free)19 outputs, specs and price
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