AIHubMixAIHubMix
← Models

GPT 5.2 vs Grok 4.5

Compare GPT 5.2 from OpenAI and Grok 4.5 from Grok on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.

OpenAIGPT 5.2GrokGrok 4.5
+ Add model · 2/4
OpenAI logo
GPT 5.2
OpenAI · text, image → text

GPT-5.2 is an advanced general-purpose model that improves on GPT-5.1 with more reliable, flexible, and user-friendly interactions. It delivers clearer responses, stronger instruction-following, and adaptive reasoning that scales from simple requests to complex, multi-step tasks. With enhanced control over tone and structure and support for extended context, GPT-5.2 is well suited for agent workflows, analysis, coding, and cross-domain applications.

Input$1.75 /M
Output$14.00 /M
Details
Grok logo
Grok 4.5
Grok · text, image → text

Grok 4.5 was trained on datasets spanning knowledge in coding, science, engineering, and math. With both intelligent and efficient reasoning, Grok 4.5 excels at real engineering tasks and exceeds comparable leading models at these tasks.

Input$2.00 /M
Output$6.00 /M
Details

Pricing & Specifications

Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.

GPT 5.2
Grok 4.5
Input /M
$1.75
$2.00
Output /M
$14.00
$6.00
Cache read /M
$0.18
$0.50
Context length
400,000
500,000
Max output
128,000
500,000
Time to First Token
2.1 s
1.7 s
Throughput
64.6 tok/s
30.0 tok/s
Modalities
textimage
textimage
Supported Parameters
thinkingfunction callingstructured outputswebtools
thinkingtoolsfunction callingstructured outputslong context
API Formats
Released
-
July 2026

Promotional prices show the discounted rate; see each model page for promotion windows.

Activity Past 30 Days

Daily traffic served through AIHubMix — how demand for each model is trending.

gpt-5.2grok-4.5

Tokens / day

-

Requests / day

-

Performance Past 3 Days

Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.

gpt-5.2grok-4.5

Throughput (tok/s)

-

TTFT (s)

-

Uptime (%)

-

LMArena Benchmarks

LMArena ratings by capability (Bradley-Terry, commonly called Elo). Higher is better.

Text
gpt-5.2grok-4.5
1360142014801540
Overall
14351470
Coding
14831523
Math
14341478
Hard prompts
14601495
Instruction following
14241466
Multi-turn
14441477
Creative writing
13901449
Longer query
14401485
Chinese
14681511
English
14391475
Vision
gpt-5.2grok-4.5
12001240128013201360
Overall
12301282
OCR
12381295
Diagram
12561321
Homework
12681328
WebDev Arena
gpt-5.2grok-4.5
13801440150015601620
Overall
14051556
React
15591559
HTML
14131577
Gaming
15861586
Simulations
15981598
Data analytics
15221522

Source: LMArena (arena.ai) leaderboard, imported by AIHubMix. Models without published ratings are omitted per chart.

Cost calculator

Estimate your monthly bill for the same workload on each model.

Grok 4.5
$210 /mo
GPT 5.2
$315 /mo

Monthly = daily × 30. Discounted rates applied where a promotion is active.

FAQ

Which is cheaper: GPT 5.2, Grok 4.5?

Grok 4.5: $6.00/M output tokens; GPT 5.2: $14.00/M. Use the cost calculator above to estimate your own workload.

How do their coding arena scores compare?

Grok 4.5: 1523; GPT 5.2: 1483 (LMArena coding leaderboard).

Which responds faster?

Grok 4.5: 1.7s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.

How large is each context window?

GPT 5.2 accepts 400,000 and Grok 4.5 accepts 500,000 input tokens. Maximum output per request is 128,000 tokens on GPT 5.2 and 500,000 tokens on Grok 4.5.

Which one generates tokens faster?

GPT 5.2 at 64.6 tok/s and Grok 4.5 at 30.0 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.

What inputs and capabilities does each model support?

GPT 5.2 accepts text and image input and supports thinking, function calling, structured outputs, web search and tool calling; Grok 4.5 accepts text and image input and supports thinking, tool calling, function calling, structured outputs and long context.

Can I call GPT 5.2 and Grok 4.5 with the same API key?

Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.

Popular comparisons

Related model match-ups readers also look at.

Kimi K3vsQwen3.8 Max PreviewClaude Opus 5vsGPT 5.6 LunaClaude Opus 5vsClaude Sonnet 5Gemini 3.1 Pro PreviewvsGPT 5.5GLM 5.2vsKimi K3Gemini 3.6 FlashvsQwen3.8 MaxDeepSeek V4 FlashvsGLM 5.2Claude Opus 5vsGrok 4.5
AIHubMix

© 2023 - 2026 AIHubMix, LLC

Product

Company

Developer

Connect