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Claude Opus 4.8 vs GLM 4.5 Air

At a glance
AnthropicClaude Opus 4.8

Anthropic's most capable Opus yet, built for long-horizon autonomous agents and frontier coding.

891M ctx$5.00/$25.00 per M#4/92
Zhipu AIGLM 4.5 Air

Lightweight GLM 4.5 variant for fast, cost-efficient inference.

131K ctx$0.13/$0.85 per M
AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
AnthropicClaude Opus 4.8
Reasoning
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·Provider·OpenRouter· as of 2026-07-10
Capability
CapabilityECI89.2
Reasoning & Knowledge
Graduate Science91.0%Expert-Level—Factual Recall39.5%
Math
Competition Math98.3%Research Math47.2%
Coding
Real-World Coding88.6%
Agentic
Novel Reasoning72.1%
Zhipu AIGLM 4.5 Air
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Epoch AI·OpenRouter· as of 2026-07-10
Cheaper
Capability
Capability—
Reasoning & Knowledge
Graduate Science—Expert-Level8.1%Factual Recall—
Math
Competition Math—Research Math—
Coding
Real-World Coding—
Agentic
Novel Reasoning—
Specs
AnthropicClaude Opus 4.8
1M
Context
128K
Max output
May 2026
Released
Zhipu AIGLM 4.5 Air
131K
Context
98K
Max output
Jul 2025
Released
Capabilities
AnthropicClaude Opus 4.8
Vision
Audio
Reasoning
Zhipu AIGLM 4.5 Air
Vision
Audio
Reasoning
Pricing
AnthropicClaude Opus 4.8
Live pricing, shown before you run
Input$5.00/M tokens
Output$25.00/M tokens
Cache read$0.50/M tokens
Cache write$6.25/M tokens
Web search$0.01/search
Zhipu AIGLM 4.5 Air
Live pricing, shown before you run
Input$0.13/M tokens
Output$0.85/M tokens
Cache read$0.02/M tokens
Chat with Claude Opus 4.8Go to model
Chat with GLM 4.5 AirGo to model
Frequently Asked Questions: Claude Opus 4.8 vs GLM 4.5 Air▼

Which is better, Claude Opus 4.8 or GLM 4.5 Air?

▼

Both Claude Opus 4.8 and GLM 4.5 Air 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, Claude Opus 4.8 or GLM 4.5 Air?

▼

GLM 4.5 Air has a lower blended cost. Claude Opus 4.8: $5.00 input / $25.00 output. GLM 4.5 Air: $0.13 input / $0.85 output.

Which has a larger context window, Claude Opus 4.8 or GLM 4.5 Air?

▼

Claude Opus 4.8 has a larger context window: Claude Opus 4.8 supports 1M tokens vs GLM 4.5 Air at 131K tokens.

Do both Claude Opus 4.8 and GLM 4.5 Air support vision?

▼

Claude Opus 4.8 supports vision/image input, but GLM 4.5 Air does not.

What are the key differences between Claude Opus 4.8 and GLM 4.5 Air?

▼

Key differences: GLM 4.5 Air is significantly cheaper; only Claude Opus 4.8 supports vision input. 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 Claude Opus 4.8 and GLM 4.5 Air for free on idapt.app to see which performs better for your specific needs.

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