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Coding GLM 5.3 Flash vs Grok 4.5

Compare Coding GLM 5.3 Flash from Z.AI 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.

Z.AICoding GLM 5.3 FlashGrokGrok 4.5
+ Add model · 2/4
Z.AI logo
Coding GLM 5.3 Flash
Z.AI · text, image, video → text

Coding GLM 5.3 Flash is a dedicated version of GLM 5.3 Flash built for AI coding and Coding Agent workflows. It is designed for code understanding, generation, editing, repository-level development, and automated software engineering tasks. With support for context windows of up to approximately 1 million tokens, it can handle large codebases and extended development sessions. The model also supports text, image, and video inputs, along with tool use, making it well suited for AI coding tools such as Claude Code, OpenCode, Cline, and other agentic development environments.

Input$0.0282 /M
Output$0.0986 /M
Cache read$0.007 /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 /M
Output$6 /M
Cache read$0.5 /M
Details

Pricing & Specifications

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

Coding GLM 5.3 Flash
Grok 4.5
Input /M
$0.0282
$2
Output /M
$0.0986
$6
Cache read /M
$0.007
$0.5
Context length
1,000,000
500,000
Max output
131,072
500,000
Time to First Token
4.8 s
4.4 s
Throughput
20.8 tok/s
34.2 tok/s
Modalities
textimagevideo
textimage
Supported Parameters
thinkingtoolsfunction callingstructured outputs
thinkingtoolsfunction callingstructured outputslong context
API Formats
Released
August 26, 2026
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.

coding-glm-5.3-flashgrok-4.5

Tokens / day

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Requests / day

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Performance Past 3 Days

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

coding-glm-5.3-flashgrok-4.5

Throughput (tok/s)

-

TTFT (s)

-

Uptime (%)

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Cost calculator

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

Coding GLM 5.3 Flash
$3.17 /mo
Grok 4.5
$210 /mo

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

FAQ

Which is cheaper: Coding GLM 5.3 Flash, Grok 4.5?

Coding GLM 5.3 Flash: $0.0986/M output tokens; Grok 4.5: $6/M. Use the cost calculator above to estimate your own workload.

Which responds faster?

Grok 4.5: 4.4s 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?

Coding GLM 5.3 Flash accepts 1,000,000 and Grok 4.5 accepts 500,000 input tokens. Maximum output per request is 131,072 tokens on Coding GLM 5.3 Flash and 500,000 tokens on Grok 4.5.

Which one generates tokens faster?

Grok 4.5 at 34.2 tok/s and Coding GLM 5.3 Flash at 20.8 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.

What inputs and capabilities does each model support?

Coding GLM 5.3 Flash accepts text, image and video input and supports thinking, tool calling, function calling and structured outputs; Grok 4.5 accepts text and image input and supports thinking, tool calling, function calling, structured outputs and long context.

Can I call Coding GLM 5.3 Flash 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.

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