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  5. Gemma 4 31BvsGrok 4.7
Updated Sep 2026

Gemma 4 31BvsGrok 4.7

Gemma 4 31B is cheaper than Grok 4.7 at $0.14/M vs $1.6/M input tokens.

Gemma 4 31B and Grok 4.7 compared across 9 shared prompts
SpecGemma 4 31BGrok 4.7
Input price$0.14/M tokens$1.6/M tokens
Output price$0.4/M tokens$4.8/M tokens
Context window262K tokens500K tokens
WeightsOpenClosed
Free API (OpenRouter)Yes (1 provider)No
ReleasedApr 2026Sep 2026
Side by side

Same prompt, both answers

Opening lines from 4 of the 9 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…

Gemma 4 31B691 words
This architecture contains several critical flaws that would make it unusable for a real-time collaborative experience. The most severe issues are the lack of a global synchronization mechanism, unreliable conflict resolution, and inefficient data persistence.
Read the full answer
Grok 4.71,399 words
This design will lose edits, split users into inconsistent views, and fall over under concurrent writing. The core problems are clock-based conflict resolution, per-server WebSocket fan-out, polling as the sync path, and treating documents as full HTML snapshots.
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…

Gemma 4 31B222 words
Here is a recipe for a rich, comforting dessert that tastes like a gourmet treat but uses basic staples. 🍯 Golden Velvet Honey Cakes A warm, gooey, single-serving cake that bridges the gap between a brownie and a sponge cake.
Read the full answer
Grok 4.7129 words
Pantry Gold Honey Biscuits A sweet, buttery, slightly salty biscuit that tastes like it took more effort than it did. Ingredients (7) 2 cups all-purpose flour 1 tbsp baking powder ½ tsp salt ¼ cup sugar ½ cup butter (cold) ¾ cup milk 2 tbsp honey Time: about 10 minutes prep, 12–15 minutes bake Instructions Heat the…
Read the full answer

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.…

Gemma 4 31B537 words
Here are the three weakest claims in the MindMeld AI pitch, the reasoning behind their weakness, and strategies to strengthen them. The Technical Claim: "94% accuracy... works with any language, any device."
Read the full answer
Grok 4.7599 words
Three weakest claims 1. “Predict what you want to type before you think it” (Slide 1) This is scientifically incoherent, not just ambitious. Non-invasive EEG decodes neural activity that is already underway (motor imagery, attempted speech, attention).
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…

Gemma 4 31B548 words
This plan is designed for sustainability, not intensity. The goal of Month 1 is to build "minimum viable habits"—small wins that prove to your brain that a healthier lifestyle is achievable. We will focus on three pillars: Nutrition, Movement, and Sleep.
Read the full answer
Grok 4.7442 words
1-month beginner plan for better health and longevity Focus on three foundations: nutrition, movement, and sleep. Aim for consistency over perfection. If you have a medical condition, check with a clinician before big changes. Week-by-week rhythm Week 1: Build awareness and one easy habit in each area.
Read the full answer
Our Verdict
Gemma 4 31B
Gemma 4 31B
Grok 4.7
Grok 4.7

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

Gemma 4 31B costs 12x less per token.

Too close to call
API pricing

Cost per 1M tokens

Gemma 4 31B
Input
$0.14
11× cheaper
Output
$0.40
12× cheaper
Grok 4.7
Input
$1.60
Output
$4.80

Gemma 4 31B is cheaper on both: 11× input, 12× output.

Where to run it

12 hosts, cheapest first

Gemma 4 31B11 hosts
HostInOutContextUptime
DDeepInfrafp4$0.09 in·$0.34 out·262k·97.5% upCCoreWeavefp4$0.10 in·$0.34 out·262k·97.1% upVVenicefp4$0.12 in·$0.36 out·256k·96.2% upCChutesfp4$0.12 in·$0.37 out·131k·92.7% upCCrusoebf16$0.14 in·$0.40 out·262k·97.5% upFFriendli$0.14 in·$0.40 out·262k·92.6% up
5 more hostsFewer hosts
NNovitabf16$0.14 in·$0.40 out·262k·87.2% upPParasailfp8$0.15 in·$0.40 out·262k·99.1% upSSambaNova$0.38 in·$1.15 out·131k·96.8% upMModelRunfp4$0.75 in·$1.00 out·262k·100% upSSiliconFlowfp8$0.75 in·$1.00 out·262k·43.1% up
Grok 4.71 host
HostInOutContextUptime
xAI$1.60 in·$4.80 out·500k·98.9% up

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

Research

What we learned reading every model

FAQ

Common questions

Gemma 4 31B is developed by Google AI while Grok 4.7 is developed by xAI. Gemma 4 31B has a 262K token context window vs Grok 4.7's 500K. You can compare their actual outputs across 9 challenges on Rival to see how they differ in practice.

It depends on your use case. Gemma 4 31B and Grok 4.7 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.

Gemma 4 31B costs $0.14/M input tokens and Grok 4.7 costs $1.6/M input tokens. Gemma 4 31B is $1.46/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 Gemma 4 31B and Grok 4.7 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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Gemma 4 31B49 outputs, specs and price
Grok 4.7 logo
Grok 4.710 outputs, specs and price
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Explore all of Rival

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