OpenAI o3 vs GLM-4-Plus

Performance benchmarks + pricing comparison — updated April 2026

OpenAI o3

OpenAI

Next generation reasoning model. Improved coding and math over o1.

Input	$10.00/M
Output	$40.00/M
Context	200K tokens
Best For	Advanced coding, complex problem-solving
Benchmark	85/100

Zhipu AI

Zhipu AI's balanced model. Strong Chinese language understanding with competitive coding ability.

Input	$0.700/M
Output	$0.700/M
Context	128K tokens
Best For	Chinese applications, code generation, function calling

Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.

Scenario	OpenAI o3	GLM-4-Plus	Savings
Small Script (1K lines)	$1.55	$0.05	GLM-4-Plus saves $1.50 (97%)
Medium Feature (10K lines)	$11.50	$0.38	GLM-4-Plus saves $11.12 (97%)
Large Project (50K lines)	$57.50	$1.92	GLM-4-Plus saves $55.58 (97%)
Code Review (5K lines)	$2.75	$0.14	GLM-4-Plus saves $2.61 (95%)

GLM-4-Plus wins on both price and performance — $0.700/M input with a benchmark score of N/A/100.

For most developers, this is the clear choice between these two models.

Anthropic's balanced model for coding and general tasks. Best price-performance ratio in the Claude family.

Anthropic's most powerful model. Best for complex reasoning and challenging coding tasks.

Previous generation Sonnet. Still excellent for coding tasks at the same price point.

Fast, cost-effective model for high-volume tasks. Great for code review and simple queries.

First generation Opus. Highest reasoning capability in the Claude 3 family.

First generation Sonnet. Balanced performance for general tasks.