Sonar Pro Search vs GLM 5.1

Compare Sonar Pro Search from Perplexity and GLM 5.1 from Z.ai on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.

Sonar Pro Search vs GLM 5.1: side-by-side summary

Sonar Pro Search and GLM 5.1 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Sonar Pro Search, from Perplexity, has a 200,000-token context window and is priced at $3/M tokens input, $15/M tokens output on OpenRouter.

GLM 5.1, from Z.ai, has a 204,800-token context window and is priced at $0.966/M tokens input, $3.036/M tokens output on OpenRouter.

Context window

Sonar Pro Search: 200,000 tokens
GLM 5.1: 204,800 tokens

Price

Sonar Pro Search: $3/M tokens input, $15/M tokens output
GLM 5.1: $0.966/M tokens input, $3.036/M tokens output

Provided by

Sonar Pro Search: Perplexity
GLM 5.1: Z.ai

Sonar Pro Search vs GLM 5.1 at a glance

Sonar Pro Search vs GLM 5.1 comparison
Attribute	Sonar Pro Search	GLM 5.1
Input price	$3/M tokens	$0.966/M tokens
Output price	$15/M tokens	$3.036/M tokens
Context window	200,000 tokens	204,800 tokens
Intelligence Index	Not available	24.2
Coding Index	Not available	Not available
Agentic Index	Not available	Not available
Latency (p50)	21.28 s	1.82 s
Throughput (p50)	39.0 tok/s	41.0 tok/s

Benchmark data updated Oct 5, 2026

Frequently asked questions

Is Sonar Pro Search cheaper than GLM 5.1?

GLM 5.1 is cheaper than Sonar Pro Search on OpenRouter: GLM 5.1 costs $0.966/M tokens input and $3.036/M tokens output, while Sonar Pro Search costs $3/M tokens input and $15/M tokens output.

Which has the longer context window, Sonar Pro Search or GLM 5.1?

GLM 5.1 has the longer context window at 204,800 tokens, compared with 200,000 tokens for Sonar Pro Search.

Which is faster, Sonar Pro Search or GLM 5.1?

GLM 5.1 is faster on OpenRouter, generating a median 41.0 tokens per second compared with 39.0 tokens per second for Sonar Pro Search.

Sonar Pro Search vs GLM 5.1

Sonar Pro Search vs GLM 5.1

Overview