The Known Good Updated 25 Jul 2026
grok-4-0709 vs OpenAI: GPT-5.2 ·xAI vs OpenAI

grok-4-0709 vs OpenAI: GPT-5.2 — head-to-head comparison

grok-4-0709 profile OpenAI: GPT-5.2 profile All comparisons
grok-4-0709 — xAI
Quality
#27 of 61
67based on 3 of 6 evaluations
Known Good Index
Speed
unranked
—
Output tokens per second
Price
unranked
—
Blended per 1M tokens
Cache hit price
unranked
—
per 1M tokens
Context
unranked
—
tokens
OpenAI: GPT-5.2 — OpenAI
Quality
#16 of 61
80based on 5 of 6 evaluations
Known Good Index
Speed
#151 of 316
53.9
Output tokens per second
Price
#295 of 340
$4.81
Blended per 1M tokens
In $1.75 · Out $14.00
Cache hit price
#134 of 206
$0.17
per 1M tokens (−90%)
Context
#106 of 345
400k
tokens (~600 pages)
Summary

On the Known Good Index, grok-4-0709 scores 67 and OpenAI: GPT-5.2 scores 80 — a 13-point lead for OpenAI: GPT-5.2. They share 3 published evaluations, with grok-4-0709 ahead on 0 and OpenAI: GPT-5.2 ahead on 3.

Published pricing is tracked for OpenAI: GPT-5.2 only, at $4.81 per 1M tokens blended.

grok-4-0709 is proprietary; OpenAI: GPT-5.2 is proprietary. 2 tracked hosts serve one or both.

Generated from tracked data on 25 Jul 2026 · how these comparisons are computed →

At a glance
Metricgrok-4-0709OpenAI: GPT-5.2
Known Good Index 67 based on 3 of 6 evaluations 80 based on 5 of 6 evaluations
Blended $/1M — $4.81
Output tok/s — 54
Context window — 400k
Providers 0 2
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Quality

Known Good Index and the capability indices, side by side

IndicesComponents
Index scores

Each index is min-max normalised across tracked models and scaled 0–100 from published evaluations. We do not run these evaluations.

Metricgrok-4-0709OpenAI: GPT-5.2
Known Good Index 67 80
Coding Index — 76
Mathematics Index 84 96
Science Index 91 96
Reasoning Index — 77
Agentic Index 27 76
Openness Index 5 5
The Known Good

Quality Breakdown

Every evaluation both models report a published score for

Evaluations both models report

Bar = grok-4-0709 · marker = OpenAI: GPT-5.2 · scores ingested from Epoch AI (CC-BY 4.0)

GPQA Diamond87 / 91
MATH / AIME84 / 96
Terminal-Bench27 / 65

Right-hand figures read grok-4-0709 / OpenAI: GPT-5.2. grok-4-0709 leads on 0 of 3, OpenAI: GPT-5.2 on 3.

The Known Good

Arena Elo

Human preference rating from blind pairwise votes

Arena ratings

Elo from blind pairwise votes, ingested from Arena. Higher is better.

Metricgrok-4-0709OpenAI: GPT-5.2
Text Arena 1,410 1,411
Text Arena (style controlled) 1,410 1,434
The Known Good

Price & Cost

Published API pricing by token type

Per token typeCache discount
Published pricing

USD per 1M tokens. Blended is a 3:1 input:output mix. Live from OpenRouter, cross-checked against models.dev. Lower is better.

Metricgrok-4-0709OpenAI: GPT-5.2
Input $/1M — $1.75
Output $/1M — $14.00
Blended $/1M — $4.81
Cache read $/1M — $0.175
The Known Good
We publish blended price rather than cost-per-task. Cost-per-task requires token counts from an evaluation suite we do not run. Blended price is computed from published rates and is fully reproducible — see the pricing methodology.

Context Window

Maximum input accepted and maximum output emitted

Context and output limits

Provider-declared limits, from metadata via models.dev and OpenRouter. Higher is better.

Metricgrok-4-0709OpenAI: GPT-5.2
Context window — 400k
Max output tokens — 128k
The Known Good

Speed & Latency

Median throughput and time to first token across hosting providers

Output speedTime to first token
Throughput and latency

Medians across all tracked providers, derived from OpenRouter endpoint telemetry.

Metricgrok-4-0709OpenAI: GPT-5.2
Output tokens/s — 54
Time to first token — 2.5s
The Known Good

Providers

Which hosts serve each model, and at what price and speed

2 hosts
Full provider benchmarks →
Provider grok-4-0709 blendedgrok-4-0709 tok/s OpenAI: GPT-5.2 blendedOpenAI: GPT-5.2 tok/s
OpenAI · first party — — $2.41 49
Azure · first party — — $4.81 43

Per-host pricing and telemetry from OpenRouter. A dash means that host does not serve that model.

The Known Good
Sources for this page
Pricing & providers — OpenRouter Metadata — models.dev Benchmarks — Epoch AI (CC-BY 4.0)Elo — Arena Full attribution →