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GPT-5.6 Sol vs GLM 5.2

Detailed technical comparison between GPT-5.6 Sol (OpenAI) and GLM 5.2 (Zhipu AI). Review live API token pricing, context window capabilities, time-to-first-token latency, and verified benchmark scores side-by-side.

โšก Executive Summary & Verdict

Comparison Snapshot

GPT-5.6 Sol: 5 WinsvsGLM 5.2: 1 Win
Context Leader

GPT-5.6 Sol

1,050,000 tokens
Agentic Tool-Calling

Tie

Equal Capability
Lowest Latency (TTFT)

Tie

Equal Speed
Input Price Leader

GLM 5.2

$0.80 / MTok
OpenAIactive

GPT-5.6 Sol

GPT-5.6 Sol is the flagship model in OpenAI's GPT-5.6 series. It is suited for complex reasoning, coding, and agentic workflows, and is particularly strong at command-line and multi-step coding tasks...

View GPT-5.6 Sol Full Specs โ†’
Zhipu AIactive

GLM 5.2

GLM 5.2 is a large-scale reasoning model from Z.ai. It supports text input and output with a 1M-token context window, and is suited for long-horizon agent workflows, project-level software engineering,...

View GLM 5.2 Full Specs โ†’

Technical Specifications

๐Ÿ† = Superior Spec
SpecificationGPT-5.6 SolGLM 5.2
ProviderOpenAIZhipu AI
Context Window1,050,000 tokens๐Ÿ†1,048,576 tokens
Agent SuitabilityN/AN/A
Time to First Token (TTFT)N/AN/A
Deployment Modelmanaged apimanaged api
Production Stabilitybetabeta
API AvailableYesYes
Released Date2026-07-092026-06-16

API Pricing Comparison

Input Price per Million Tokens

GPT-5.6 Sol

$5.00

GLM 5.2

$0.80

Output Price per Million Tokens

GPT-5.6 Sol

$30.00

GLM 5.2

$2.50

๐Ÿ’ก Cost Ratio: GLM 5.2 is 6.3x cheaper per input token than GPT-5.6 Sol.

Want to test both models live?

Run side-by-side prompt benchmarks in our dynamic multi-model Sandbox. Compare execution speeds, latency metrics, and compute actual costs in real-time.

Benchmark Performance Metrics

Standardized Scores (0โ€“100%)

Scores show verified raw accuracy percentages across standardized AI evaluation suites. Higher bars indicate superior performance in that domain.

MMLUGeneral knowledge & multi-task understanding
91.8%vs89.5%+2.3% GPT-5.6 Sol
GPT-5.6 Sol ๐Ÿ†
GLM 5.2
HumanEvalPython coding & logic synthesis
93.0%vs91.2%+1.8% GPT-5.6 Sol
GPT-5.6 Sol ๐Ÿ†
GLM 5.2
MATHComplex mathematical problem solving
80.2%vs80.5%+0.3% GLM 5.2
GPT-5.6 Sol
GLM 5.2 ๐Ÿ†
GPQAGraduate-level expert reasoning
58.6%vs53.5%+5.1% GPT-5.6 Sol
GPT-5.6 Sol ๐Ÿ†
GLM 5.2
HellaSwagCommonsense reasoning and inference
90.8%vs89.8%+1.0% GPT-5.6 Sol
GPT-5.6 Sol ๐Ÿ†
GLM 5.2
MT-BenchMulti-turn conversation flow quality
9.3%vs9.3%+0.0% GPT-5.6 Sol
GPT-5.6 Sol ๐Ÿ†
GLM 5.2

GPT-5.6 Sol Quirks & Gotchas

No developer gotchas reported.

GLM 5.2 Quirks & Gotchas

No developer gotchas reported.

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