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GLM 5.3 vs GPT 5.6 Sol

Compare GLM 5.3 from Z.AI and GPT 5.6 Sol from OpenAI on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.

Z.AIGLM 5.3OpenAIGPT 5.6 Sol
+ Add model · 2/4
Z.AI logo
GLM 5.3
Z.AI · text → text

GLM-5.3 is Z.AI’s coding and agentic reasoning model, built for complex software engineering, long-running agent tasks, vulnerability analysis, and other demanding workloads. Building on GLM-5.2, it incorporates further post-training improvements to deliver stronger coding performance, better task execution, and greater token efficiency. We currently offer the production-ready GLM-5.3 API with unlimited concurrency, making it well suited for high-throughput workloads, coding agents, and large-scale automation. For a limited time, GLM-5.3 is available at 10% off.

Input$1.1268 /M
Output$3.9438 /M
Cache read$0.2817 /M
Details
OpenAI logo
GPT 5.6 Sol
OpenAI · text, image → text

GPT‑5.6 Sol sets a new standard for both intelligence and efficiency, achieving state-of-the-art results across coding, knowledge work, cybersecurity, and science while outperforming previous and competing frontier models with fewer tokens and at lower estimated cost.

Input$4 /M
Output$20 /M
Details

Pricing & Specifications

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

GLM 5.3
GPT 5.6 Sol
Input /M
$1.1268
$4
Output /M
$3.9438
$20
Cache read /M
$0.2817
-
Context length
1,048,576
1,050,000
Max output
131,072
128,000
Time to First Token
0.8 s
5.1 s
Throughput
48.4 tok/s
50.5 tok/s
Modalities
text
textimage
Supported Parameters
thinkingtoolsfunction callingstructured outputs
toolsthinkingstructured outputs
API Formats
chat_completions · responses
Released
August 14, 2026
July 9, 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.

glm-5.3gpt-5.6-sol

Tokens / day

-

Requests / day

-

Performance Past 3 Days

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

glm-5.3gpt-5.6-sol

Throughput (tok/s)

-

TTFT (s)

-

Uptime (%)

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Cost calculator

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

GLM 5.3
$127 /mo
GPT 5.6 Sol
$540 /mo

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

FAQ

Which is cheaper: GLM 5.3, GPT 5.6 Sol?

GLM 5.3: $3.9438/M output tokens; GPT 5.6 Sol: $20/M. Use the cost calculator above to estimate your own workload.

Which responds faster?

GLM 5.3: 0.8s 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?

GLM 5.3 accepts 1,048,576 and GPT 5.6 Sol accepts 1,050,000 input tokens. Maximum output per request is 131,072 tokens on GLM 5.3 and 128,000 tokens on GPT 5.6 Sol.

Which one generates tokens faster?

GPT 5.6 Sol at 50.5 tok/s and GLM 5.3 at 48.4 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.

What inputs and capabilities does each model support?

GLM 5.3 accepts text input and supports thinking, tool calling, function calling and structured outputs; GPT 5.6 Sol accepts text and image input and supports tool calling, thinking and structured outputs.

Can I call GLM 5.3 and GPT 5.6 Sol 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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