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Compare/Claude Sonnet 5 vs GLM 5.2 Fast

Claude Sonnet 5 vs GLM 5.2 Fast

AnthropicActive

Claude Sonnet 5

$1.44 / $7.20 · 1,000,000 ctx · 35 providers
Zhipu AIActive

GLM 5.2 Fast

$1.45 / $4.50 · 1,048,576 ctx · 8 providers
01Differences

At a glance

Computed automatically from tracked data.

• Claude Sonnet 5's input price is 1% higher than GLM 5.2 Fast's ($1.44 vs $1.45 per 1M).
• Claude Sonnet 5's output price is 37% lower than GLM 5.2 Fast's ($7.20 vs $4.50 per 1M).
• GLM 5.2 Fast has a 1× larger context window (1,048,576 vs 1,000,000 tokens).
• They differ in open weights (Claude Sonnet 5: No, GLM 5.2 Fast: Yes).
02Specs

Side by side

Claude Sonnet 5GLM 5.2 Fast
Input / 1M$1.44$1.45
Output / 1M$7.20$4.50
Context1,000,0001,048,576
Max output1,000,0001,048,560
Providers358
Released2026-06-292026-06-13
03Prices

Common providers

ProviderClaude Sonnet 5GLM 5.2 Fast
llmgateway$2.00 / $10.00$2.20 / $6.50
llmgateway-providers$2.00 / $10.00$2.20 / $6.50
pioneer$2.00 / $10.00$2.10 / $6.60
requesty$2.00 / $10.00$2.10 / $6.60
vercel$2.00 / $10.00$2.10 / $6.60
04History

Recent changes

Claude Sonnet 5
2026-09-15 — Price up amazon-bedrock
2026-09-15 — Price up amazon-bedrock
2026-09-15 — Price up amazon-bedrock
2026-09-15 — Price up amazon-bedrock
2026-09-15 — Price up amazon-bedrock
GLM 5.2 Fast
2026-09-10 — Added pioneer
2026-09-09 — Price up llmgateway
2026-09-09 — Price up llmgateway
2026-09-09 — Price up llmgateway-providers
2026-09-09 — Price up llmgateway-providers
as of 2026-09-16
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