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GLM 5.2 vs GPT OSS 20B

At a glance
Zhipu AIGLM 5.2

Z.ai's frontier reasoning model for long-context agents and software engineering.

83262K ctx$1.40/$4.40 per M#16/92
OpenAIGPT OSS 20B

OpenAI's compact open-weights model for efficient inference.

131K ctx$0.03/$0.14 per M
AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
Zhipu AIGLM 5.2
Reasoning
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Capability
CapabilityECI83.4
Reasoning & Knowledge
Graduate Science91.9%Factual Recall38.1%
Math
Competition Math86.4%
Coding
Real-World Coding78.7%
Agentic
Terminal Tasks—
OpenAIGPT OSS 20B
Reasoning
CodingInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Epoch AI·OpenRouter· as of 2026-07-10
Cheaper
Capability
Capability—
Reasoning & Knowledge
Graduate Science—Factual Recall—
Math
Competition Math—
Coding
Real-World Coding—
Agentic
Terminal Tasks3.4%
Specs
Zhipu AIGLM 5.2
262K
Context
128K
Max output
Jun 2026
Released
OpenAIGPT OSS 20B
131K
Context
16K
Max output
Aug 2025
Released
Capabilities
Zhipu AIGLM 5.2
Vision
Audio
Reasoning
OpenAIGPT OSS 20B
Vision
Audio
Reasoning
Pricing
Zhipu AIGLM 5.2
Live pricing, shown before you run
Input$1.40/M tokens
Output$4.40/M tokens
Cache read$0.26/M tokens
OpenAIGPT OSS 20B
Live pricing, shown before you run
Input$0.03/M tokens
Output$0.14/M tokens
Chat with GLM 5.2Go to model
Chat with GPT OSS 20BGo to model
Frequently Asked Questions: GLM 5.2 vs GPT OSS 20B▼

Which is better, GLM 5.2 or GPT OSS 20B?

▼

Both GLM 5.2 and GPT OSS 20B are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.

Which is cheaper, GLM 5.2 or GPT OSS 20B?

▼

GPT OSS 20B has a lower blended cost. GLM 5.2: $1.40 input / $4.40 output. GPT OSS 20B: $0.03 input / $0.14 output.

Which has a larger context window, GLM 5.2 or GPT OSS 20B?

▼

GLM 5.2 has a larger context window: GLM 5.2 supports 262K tokens vs GPT OSS 20B at 131K tokens.

What are the key differences between GLM 5.2 and GPT OSS 20B?

▼

Key differences: GPT OSS 20B is significantly cheaper. Compare full specs on this page.

Which model should I choose for my use case?

▼

If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both GLM 5.2 and GPT OSS 20B for free on idapt.app to see which performs better for your specific needs.

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