Skip to content
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Default Index
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed
  1. Home
  2. /
  3. Compare
  4. /
  5. Grok Code Fast 1vsLaguna S 2.1 (free)
Updated Jul 2026

Grok Code Fast 1vsLaguna S 2.1 (free)

Laguna S 2.1 (free) is cheaper than Grok Code Fast 1 at $0/M vs $0.2/M input tokens.

Grok Code Fast 1 and Laguna S 2.1 (free) compared across 10 shared prompts
SpecGrok Code Fast 1Laguna S 2.1 (free)
Input price$0.2/M tokensFree
Output price$1.5/M tokensFree
Context window256K tokens262K tokens
Free API (OpenRouter)NoYes (1 provider)
ReleasedAug 2025Jul 2026
Side by side

Same prompt, both answers

Opening lines from 3 of the 10 prompts both answered. Formatting stripped, words untouched.

Advanced Longevity Plan (Biohacker)

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

Grok Code Fast 1941 words
Comprehensive 3-Month Longevity Biohacking Plan This plan is designed for an experienced biohacker seeking to optimize longevity, physical performance, and cognitive function through evidence-based, cutting-edge strategies. It integrates advanced nutrition, supplementation, exercise, stress management, and technology.
Read the full answer
Laguna S 2.1 (free)1,140 words
Comprehensive 3-Month Longevity Optimization Plan Phase 1: Foundation & Assessment (Month 1) Week 1-2: Baseline Establishment Comprehensive Health Testing Complete blood panel (CBC, CMP, lipid panel, inflammatory markers: hs-CRP, IL-6) Hormone panel (testosterone, estrogen, DHEA, cortisol, thyroid panel) Genetic…
Read the full answer

Adversarial Contract Review

Here is a contract for a software consulting engagement: --- SOFTWARE CONSULTING AGREEMENT This Agreement is entered into between TechCorp…

Grok Code Fast 11,671 words
Analysis of Exploitable Clauses Against the Contractor This contract is heavily one-sided, favoring the Client (TechCorp Solutions Inc.) at the Contractor's expense.
Read the full answer
Laguna S 2.1 (free)275 words
I'll analyze each clause for potential exploitation against the contractor and suggest improvements. Exploitable Clauses & Recommended Modifications SCOPE CLAUSE Problem: "Client reserves the right to modify the scope at any time without additional compensation" Allows unlimited scope creep without extra pay No…
Read the full answer

Advanced Investment Memo (IC Memo)

You are writing an internal investment committee memo for a long/short equity fund. Company (fictional): LedgerLift (ticker: LLLT) – B2B…

Grok Code Fast 1845 words
Investment Committee Memo: LedgerLift (LLLT) Recommendation: Long with 12-month price target range of $55-$75. LedgerLift is a high-quality SaaS platform with expanding margins and strong retention in a fragmented B2B spend management market, poised for accelerated growth as mid-market enterprises prioritize…
Read the full answer
Laguna S 2.1 (free)910 words
INTERNAL INVESTMENT COMMITTEE MEMO 1. Recommendation & Thesis Recommendation: LONG 12-Month Price Target Range: $62 – $75/share Thesis: LedgerLift is a high-quality B2B SaaS platform with strong recurring revenue, exceptional unit economics, and durable customer retention.
Read the full answer
Our Verdict
Laguna S 2.1 (free)
Laguna S 2.1 (free)
Grok Code Fast 1
Grok Code Fast 1Runner-up

Not enough votes to call it. On the specs, Laguna S 2.1 (free) has the edge: bigger model tier, newer.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Grok Code Fast 1
Input
$0.20
Output
$1.50
Laguna S 2.1 (free)
Input
$0.000
Output
$0.000
Where to run it

1 host

Grok Code Fast 1

No hosts listed on OpenRouter.

Laguna S 2.1 (free)1 host
HostInOutContextUptime
PPoolsidefp4$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

Grok Code Fast 1 is developed by xAI while Laguna S 2.1 (free) is developed by Poolside. Grok Code Fast 1 has a 256K token context window vs Laguna S 2.1 (free)'s 262K. You can compare their actual outputs across 10 challenges on Rival to see how they differ in practice.

It depends on your use case. Grok Code Fast 1 and Laguna S 2.1 (free) each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 10 challenges so you can judge which fits your needs best.

Grok Code Fast 1 costs $0.2/M input tokens and Laguna S 2.1 (free) costs $0/M input tokens. Laguna S 2.1 (free) is $0.20/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 Code Fast 1 and Laguna S 2.1 (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.

Keep exploring

More comparisons

Against the newest arrivals

Grok Code Fast 1 logoDeepSeek V4 Flash Vision Exp logo
Grok Code Fast 1 vs DeepSeek V4 Flash Vision ExpLanded Sep 2026
Laguna S 2.1 (free) logoSolar Pro 4 logo
Laguna S 2.1 (free) vs Solar Pro 4Landed Sep 2026
Grok Code Fast 1 logoHy3 logo
Grok Code Fast 1 vs Hy3Landed Sep 2026
Laguna S 2.1 (free) logoQwen3.7 Flash logo
Laguna S 2.1 (free) vs Qwen3.7 FlashLanded Sep 2026
Grok Code Fast 1 logoLing 3.0 Flash logo
Grok Code Fast 1 vs Ling 3.0 FlashLanded Sep 2026
Laguna S 2.1 (free) logoMuse Glimmer 30B logo
Laguna S 2.1 (free) vs Muse Glimmer 30BLanded Sep 2026
Grok Code Fast 1 logoGLM 5.3 logo
Grok Code Fast 1 vs GLM 5.3Landed Sep 2026
Laguna S 2.1 (free) logoTernary Bonsai 2 27B logo
Laguna S 2.1 (free) vs Ternary Bonsai 2 27BLanded Sep 2026

Same lab, same size, long tail

Grok Code Fast 1 logoGrok 4.7 logo
Grok Code Fast 1 vs Grok 4.7Same lab
Grok Code Fast 1 logoGrok 4.6 logo
Grok Code Fast 1 vs Grok 4.6Version compare
Laguna S 2.1 (free) logoLaguna XS 2.1 (free) logo
Laguna S 2.1 (free) vs Laguna XS 2.1 (free)Same lab
Laguna S 2.1 (free) logoOx Alpha logo
Laguna S 2.1 (free) vs Ox AlphaSame size
Laguna S 2.1 (free) logoQwen3 30B A3B Thinking 2507 logo
Laguna S 2.1 (free) vs Qwen3 30B A3B Thinking 2507Same size
Grok Code Fast 1 logoQwen3 Coder logo
Grok Code Fast 1 vs Qwen3 CoderNew provider
Laguna S 2.1 (free) logoQwen3 Coder Flash logo
Laguna S 2.1 (free) vs Qwen3 Coder FlashNew provider
Grok Code Fast 1 logoQwen3 Coder Next logo
Grok Code Fast 1 vs Qwen3 Coder NextNew provider

Model pages

Grok Code Fast 1 logo
Grok Code Fast 160 outputs, specs and price
Laguna S 2.1 (free) logo
Laguna S 2.1 (free)10 outputs, specs and price
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Default Index
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed