← All Models

Claude Opus 4.8 vs GLM-5.2

Both models are evenly matched

Arena ELO

Claude Opus 4.8

Cheaper

GLM-5.2

Faster

Tie

Detailed Comparison

CategoryClaude Opus 4.8GLM-5.2
ProviderAnthropic Z.ai
Context Window200K WIN128K
Input Price ($/1M)$5 $1.4 WIN
Output Price ($/1M)$25 $4.4 WIN
Arena ELO1580 WINN/A
CodingN/A N/A
ReasoningN/A N/A
Speed (tokens/sec)N/A N/A
Open SourceNo Yes

Frequently Asked Questions

Which is cheaper, Claude Opus 4.8 or GLM-5.2?

GLM-5.2 is approximately 81% cheaper than Claude Opus 4.8 per million tokens.

Which has a larger context window?

Claude Opus 4.8 supports 200K context, while GLM-5.2 supports 128K.

Is Claude Opus 4.8 or GLM-5.2 open source?

Claude Opus 4.8 is proprietary. GLM-5.2 is open source.

Related Articles

Windows Codex and Claude Code fixes that work

Try Claude Opus 4.7 and read its benchmarks

Claude’s security test became a real breach

Claude’s 2026 limit changes are a capacity story, not a product story

Cognizant’s Claude play turns pilots into production

Prompt engineering is overrated for Claude Code

More Comparisons

Claude Opus 4.8 vs Claude Opus 4.5Claude Opus 4.8 vs Llama 4 ScoutClaude Opus 4.8 vs Claude Haiku 4.5Claude Opus 4.8 vs Qwen 3.6Claude Opus 4.8 vs Kimi K2.7 CodeClaude Opus 4.8 vs MiniMax H3Claude Opus 4.8 vs Llama 4 MaverickClaude Opus 4.8 vs GPT-5.3-CodexGLM-5.2 vs Claude Opus 4.5GLM-5.2 vs Llama 4 ScoutGLM-5.2 vs Claude Haiku 4.5GLM-5.2 vs Qwen 3.6GLM-5.2 vs Kimi K2.7 CodeGLM-5.2 vs MiniMax H3GLM-5.2 vs Llama 4 MaverickGLM-5.2 vs GPT-5.3-Codex