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  5. DeepSeek V4 ProvsLing 3.0 Flash VL (free)
Updated Sep 2026

DeepSeek V4 ProvsLing 3.0 Flash VL (free)

Ling 3.0 Flash VL (free) is cheaper than DeepSeek V4 Pro at $0/M vs $1.74/M input tokens.

DeepSeek V4 Pro and Ling 3.0 Flash VL (free) compared across 18 shared prompts
SpecDeepSeek V4 ProLing 3.0 Flash VL (free)
Input price$1.74/M tokensFree
Output price$3.48/M tokensFree
Context window1.0M tokens262K tokens
WeightsOpen—
Free API (OpenRouter)NoYes (1 provider)
ReleasedApr 2026Sep 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 18 prompts both answered. Formatting stripped, words untouched.

Debug This Architecture

Here's the architecture for a real-time collaborative document editor (like Google Docs): **System Overview:** - Frontend: React SPA with…

DeepSeek V4 Pro1,419 words
This architecture has several critical flaws that would cause data loss, stale states, high latency, and scalability limits. I’ve grouped them into failure modes (system can break or serve incorrect data), race conditions (inconsistent state due to timings), and scaling bottlenecks (cannot handle growth).
Read the full answer
Ling 3.0 Flash VL (free)1,856 words
Architecture Audit: Real-Time Collaborative Document Editor Critical Issues Found: 25+ REAL-TIME COLLABORATION FAILURES Issue #1 — Last-Write-Wins Silently Destroys User Work Problem: If User A and User B both edit the same paragraph, the change with the later client timestamp wins.
Read the full answer

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…

DeepSeek V4 Pro1,006 words
Here’s a gentle, beginner-friendly 1-month plan focused on three foundational pillars: Nutrition, Movement, and Rest & Resilience (sleep + stress). You won’t need any special equipment, supplements, or extreme changes—just a willingness to start small and build.
Read the full answer
Ling 3.0 Flash VL (free)493 words
🌱 Your 1-Month Health & Longevity Starter Plan 🥗 Key Area 1: Diet — Nourish Your Body Week 1: Add one extra serving of vegetables to your day (e.g., a handful of spinach in your morning eggs or a side salad at dinner). Week 2: Swap one sugary drink (soda, juice, sweetened coffee) per day for water or herbal tea.
Read the full answer

Historical Counterfactual Analysis

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

DeepSeek V4 Pro2,259 words
If the transistor had emerged in 1920—a full 27 years earlier—the entire trajectory of the 20th century would have been radically altered. The vacuum-tube era would have been cut short, unleashing a cascade of miniaturized, reliable, and energy-efficient electronics that would accelerate computing, communications, and…
Read the full answer
Ling 3.0 Flash VL (free)2,673 words
If the Transistor Had Been Invented in 1920: A Counterfactual Trajectory to 1980 Preconditions and plausibility By 1920, Karl Braun's cathode ray tube (1897) and Greenleaf Pickard's silicon crystal detector (1906) had already demonstrated semiconductor properties. Quantum theory was nascent (Planck, Bohr).
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…

DeepSeek V4 Pro336 words
Midnight Pantry Pomodoro Penne A deeply comforting, no-fuss pasta that proves the humblest staples can shine like a moonlit trattoria dinner. Ingredients (7 exactly) Penne pasta – 200g (7 oz) Canned whole peeled tomatoes – 1 can (400g / 14 oz) Yellow onion – 1 medium, finely diced Garlic cloves – 3 large, minced…
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Ling 3.0 Flash VL (free)234 words
✨ Midnight Stardust Pasta ✨ A silky, golden garlic butter pasta that tastes far more magical than its humble ingredients suggest. ⏱ Time Prep: 5 minutes Cook: 12 minutes Total: 17 minutes 🛒 Ingredients (7 Pantry Staples) Spaghetti (8 oz) Butter (4 tbsp) Olive oil (2 tbsp) Garlic (4 cloves, minced) Parmesan cheese (½…
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Michelin Star Recipe Design

Design an innovative recipe for a multi-component dish worthy of a Michelin 3-star restaurant. The recipe should feature an unusual…

DeepSeek V4 Pro1,680 words
Unagi: Midori no Yume (Eel’s Green Dream) A multi-sensory kaiseki-inspired contemporary dish that unites the deep umami of charcoal-grilled freshwater eel with the ethereal chill of matcha snow, punctuated by dashi pearls, yuzu kosho gel, and a wisp of cherry blossom smoke.
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Ling 3.0 Flash VL (free)2,639 words
"MYCELIUM" A Celebration of the Hidden Network Beneath the Forest Floor 🍄 CONCEPTUAL NARRATIVE Beneath every forest lies mycelium — the vast, invisible fungal network that connects trees, decomposes matter, and transforms the dead into life.
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Mini LBO Underwrite

You are underwriting a 5-year LBO for a private equity investment committee. Company (fictional): HarborTech Services (HTS) –…

DeepSeek V4 Pro602 words
HarborTech Services (HTS) – 5-Year LBO Model Projected Financials & Debt Schedule (US$ millions, fiscal years ending December) FY2026 FY2027 FY2028 FY2029 FY2030 Revenue 972.0 1,040.0 1,102.4 1,157.6 1,215.4 EBITDA 136.1 156.0 176.4 191.0 206.6 Margin 14.0% 15.0% 16.0% 16.5% 17.0% Cash Interest Term Loan (9% cash) 43.2…
Read the full answer
Ling 3.0 Flash VL (free)576 words
HarborTech Services (HTS) — LBO Underwriting Analysis ENTRY SUMMARY (End FY2025) Item Value FY2025 EBITDA $120.0m Purchase EV (12.0x) $1,440.0m Transaction Fees (2.0%) $28.8m Total Uses $1,468.8m Term Loan (4.0x) $480.0m Mezzanine (1.5x) $180.0m Total Debt $660.0m Equity Check $808.8m YEAR-BY-YEAR MODEL (FY2026–FY2030…
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Our Verdict
DeepSeek V4 Pro
DeepSeek V4 Pro
Ling 3.0 Flash VL (free)
Ling 3.0 Flash VL (free)Runner-up

Not enough votes to call it. On the specs, DeepSeek V4 Pro has the edge: bigger model tier, bigger context window, major provider backing.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

DeepSeek V4 Pro
Input
$1.74
Output
$3.48
Ling 3.0 Flash VL (free)
Input
$0.000
Output
$0.000
Where to run it

16 hosts, cheapest first

DeepSeek V4 Pro15 hosts
HostInOutContextUptime
SStreamLakefp8$0.96 in·$1.91 out·1M·99% upGGMI Cloudfp8$0.96 in·$1.91 out·1M·99.8% upDDigitalOcean$1.04 in·$2.09 out·1M·100% upDDeepInfrafp8$1.30 in·$2.60 out·1M·99.2% upAlibaba Cloudfp8$1.42 in·$2.83 out·1M·100% upSSiliconFlowfp8$1.50 in·$3.13 out·1M·99.4% up
9 more hostsFewer hosts
NNovitafp8$1.60 in·$3.20 out·1M·100% upVVenice$1.65 in·$3.30 out·1M·97.9% upAAtlasCloudfp4$1.68 in·$3.38 out·1M·99.8% upBaidu Qianfanfp8$1.69 in·$3.38 out·1M·99.9% upBBasetenfp4$1.74 in·$3.48 out·1M·99.6% upNNextBitfp8$1.74 in·$3.48 out·1M·97.6% upPParasailfp8$1.74 in·$3.48 out·1M·99% upAzure AI Foundry$1.91 in·$3.83 out·1M·95.5% upCloudflare Workers AIdegraded$1.15 in·$2.55 out·1M·94.2% up
Ling 3.0 Flash VL (free)1 host
HostInOutContextUptime
NNovitabf16$0 in·$0 out·262k·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 23 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

DeepSeek V4 Pro is developed by DeepSeek while Ling 3.0 Flash VL (free) is developed by inclusionAI. DeepSeek V4 Pro has a 1.0M token context window vs Ling 3.0 Flash VL (free)'s 262K. You can compare their actual outputs across 18 challenges on Rival to see how they differ in practice.

It depends on your use case. DeepSeek V4 Pro and Ling 3.0 Flash VL (free) each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 18 challenges so you can judge which fits your needs best.

DeepSeek V4 Pro costs $1.74/M input tokens and Ling 3.0 Flash VL (free) costs $0/M input tokens. Ling 3.0 Flash VL (free) is $1.74/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 DeepSeek V4 Pro and Ling 3.0 Flash VL (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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Explore all of Rival

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