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Every score has a dated snapshot.

  1. Home
  2. Comparisons
  3. Gemini 1.5 Pro vs Grok 4

Pairwise benchmark snapshot · Aug 1, 2026

Gemini 1.5 Pro vs Grok 4 benchmark

This page compares Gemini 1.5 Pro (Google) and Grok 4 (xAI) using the latest snapshots we have as of Aug 1, 2026. On preference Elo, Grok 4 is ahead by 228 points (1,488 vs 1,260; seed-bootstrap (Aug 1, 2026)). On SWE-bench coding, Grok 4 resolves 58.6% versus 38% (seed-bootstrap (Aug 1, 2026)). Grok 4 streams faster (98 tok/s) while Gemini 1.5 Pro is the cheaper output token ($5/1M). Gemini 1.5 Pro has the larger context window (2M tokens). Every cell below is a dated snapshot from a named public source — we do not invent missing scores, and we do not run SWE-bench ourselves.

Quick answer

Gemini 1.5 Pro vs Grok 4 is a dated snapshot, not a lab score. Grok 4 leads preference Elo (1,488 vs 1,260). Grok 4 leads SWE-bench coding. Gemini 1.5 Pro is the cheaper output token. Elo is crowd preference, not an exam. Pick the column that matches the job.
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Google

Gemini 1.5 Pro

First million-token Gemini Pro. Baseline for 1.5 vs 2.5 vs 3.x Pro.

Elo 1,260$5/1M out

xAI

Grok 4

Previous xAI flagship.

Elo 1,488$15/1M out

Swap or Add Any Model to this Matchup

Instant pairwise benchmark recalculation across 400+ LLMs

Model A
Model B
Quick vs:vs Claude Opus 4.5vs Claude Opus 4.6vs Claude Sonnet 4.5vs Claude 3.7 Sonnet

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Gemini 1.5 Pro (3)vsGrok 4 (6)
Gemini 1.5 Pro: 3W (33%)Overall: Grok 4Grok 4: 6W (67%)
← Gemini 1.5 ProGrok 4 →
Grok 4 (4/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo
1,260vs1,488
Coding Elo
—vs—
SWE-bench
38%vs58.6%
LiveBench
49.2%vs64.1%
GPQA Diamond
58%vs79%
Gemini 1.5 Pro: 0WGrok 4: 4W
Grok 4 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed
70 tok/svs98 tok/s
Time to first token
240 msvs230 ms
Gemini 1.5 Pro: 0WGrok 4: 2W
Gemini 1.5 Pro (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price
$5/1Mvs$15/1M
Input price
$1.25/1Mvs$3/1M
Context window
2Mvs256k
Gemini 1.5 Pro: 3WGrok 4: 0W
Capability Matchup Radar

Multi-Dimensional Capability Radar

Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.

Tap any node to inspect
Percentile 0–100
Dimensional AdvantageGrok 4 4/6
Preference Elo

Grok 4

228 pts advantage

Throughput Speed

Grok 4

28 tok/s faster

Price Efficiency

Gemini 1.5 Pro

$10.00/1M cheaper

Full Benchmark Score Matrix

—
Elo
High is better
1,260
EloHigh is better
1,488+18%
LiveBench
High is better
49.2%
LiveBenchHigh is better
64.1%+30%
SWE-bench
High is better
38%
SWE-benchHigh is better
58.6%+54%
GPQA
High is better
58%
GPQAHigh is better
79%+36%
TTFT
Low is better
240 ms
TTFTLow is better
230 ms+4%
Speed
High is better
70 tok/s
SpeedHigh is better
98 tok/s+40%
In $
Low is better
+140%$1.25/1M
In $Low is better
$3/1M
Out $
Low is better
+200%$5/1M
Out $Low is better
$15/1M
Context
High is better
+681%2M
ContextHigh is better
256k
Interactive Simulator

Workload Cost & Savings Calculator

Simulate monthly production API costs based on published $/1M tokens.

Save up to 64% with Gemini 1.5 Pro
Monthly Volume50M tokens/mo
Quick Presets:
Token Ratio (In vs Out)70% In / 30% Out
RAG / Search (10% out)Coding / Chat (50% out)
Gemini 1.5 Pro$118.75 / mo
In: $43.75Out: $75.00
Grok 4$330.00 / mo
In: $105.00Out: $225.00
Estimated Cost Delta

Gemini 1.5 Pro is estimated to save $211.25/month ($2,535/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    Grok 4:Pick Grok 4 when repo-level coding accuracy is the constraint.
  • 2
    Gemini 1.5 Pro:Pick Gemini 1.5 Pro when you are optimizing output cost.
  • 3
    Grok 4:Pick Grok 4 when time-to-first-token matters more than peak Elo.

Recommended Workload Routing

Repo / coding agentsGrok 4

Higher SWE-bench (58.6%).

High-volume chatGemini 1.5 Pro

Lower output list price ($5/1M).

Voice / low-latency UIGrok 4

Lower TTFT (230 ms).

Long-document RAGGemini 1.5 Pro

Larger window (2M).

Screenshots / visionGrok 4

Both accept images. Defaulting to the higher-Elo side (Grok 4).

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsGrok 4Higher SWE-bench (58.6%).
High-volume chatGemini 1.5 ProLower output list price ($5/1M).
Voice / low-latency UIGrok 4Lower TTFT (230 ms).
Long-document RAGGemini 1.5 ProLarger window (2M).
Screenshots / visionGrok 4Both accept images. Defaulting to the higher-Elo side (Grok 4).

Related Editorial Dispatches & Benchmark Notes

View all news
launchJul 10, 2025

Grok 4 remains the previous xAI flagship on this catalog

2025-07 row. 4.6 is the buy. We keep 4 so upgrade pairs and old inbound links resolve.

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CompareLLM Matrix

Verified head-to-head card

LIVE
VS
Google

Gemini 1.5 Pro

Elo 1,260
LiveBench49.2%
SWE-bench38%
Speed70 tok/s
Output cost$5/1M
xAI

Grok 4

Elo 1,488
LiveBench64.1%
SWE-bench58.6%
Speed98 tok/s
Output cost$15/1M

Frequently Asked Questions

Which is better overall, Gemini 1.5 Pro or Grok 4?
Grok 4 has the higher preference Elo in our latest snapshot (1,488). “Better” still depends on coding, price, and latency — see the table.
Which is better at coding, Gemini 1.5 Pro or Grok 4?
Grok 4 leads SWE-bench at 58.6% vs 38%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?
Gemini 1.5 Pro output tokens are $5/1M versus $15/1M. Input prices and retry rates still move the real bill.
Which is faster, Gemini 1.5 Pro or Grok 4?
Grok 4 has the lower time-to-first-token (230 ms vs 240 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?
Gemini 1.5 Pro accepts 2M tokens versus 256k.
Can I self-host either model?
Neither model is marked open-weights here. You are comparing hosted APIs.
Are these scores from CompareLLM’s own evals?
No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?
Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Gemini 1.5 Pro and Grok 4 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Related news

  • launch · Jul 10, 2025

    Grok 4 remains the previous xAI flagship on this catalog

Similar Head-to-Head Comparisons

All Gemini 1.5 Pro matchups →|All Grok 4 matchups →
Gemini 1.5 Pro vs Gemini 2.5 Pro (next gemini-pro)Grok 4 vs Grok 3 (previous grok)Grok 4 vs Grok 4.6 (next grok)Gemini 3 Pro vs Grok 4Gemini 3 Flash vs Grok 4Gemini 2.0 Flash Thinking vs Grok 4