Which is cheaper, GLM-4-32B-0414-128K or GLM-4.5-Air?
As of August 25, 2026, GLM-4-32B-0414-128K is 85% cheaper on blended LLM API pricing. GLM-4-32B-0414-128K costs $0.10 per million input tokens and $0.10 per million output tokens ($0.20 blended 1M-in + 1M-out). GLM-4.5-Air costs $0.20 / $1.10 per million tokens ($1.30 blended). Sources: https://docs.z.ai/guides/overview/pricing and https://docs.z.ai/guides/overview/pricing. The cheapest LLM for your app still depends on how many output tokens you generate.
How much does GLM-4-32B-0414-128K vs GLM-4.5-Air cost per million tokens?
GLM-4-32B-0414-128K Z AI API pricing is $0.10 input and $0.10 output per million tokens via Z AI. GLM-4.5-Air Z AI API pricing is $0.20 input and $1.10 output per million tokens via Z AI. Use those four numbers, not ChatGPT Plus or Claude Pro subscription prices, when you are comparing APIs.
Which is better for coding, GLM-4-32B-0414-128K or GLM-4.5-Air?
GLM-4.5-Air has a published SWE-bench Verified score of 57.6%. GLM-4-32B-0414-128K does not have that eval on this page yet.
What is the context window for GLM-4-32B-0414-128K vs GLM-4.5-Air?
GLM-4-32B-0414-128K supports a 128K token context window, while GLM-4.5-Air supports 131K tokens. GLM-4.5-Air offers a larger context window. Filling a larger window bills more input tokens, so the cheaper-per-million model can still cost more on long documents.
Which model performs better on benchmarks, GLM-4-32B-0414-128K or GLM-4.5-Air?
Shared benchmark scores for GLM-4-32B-0414-128K and GLM-4.5-Air are still limited. Check the comparison table for the evals each model has published. Check the comparison table for GPQA Diamond, SWE-bench, MMLU, HLE, and the other evals we track. Token price and benchmark score together are the usual LLM comparison, not either number alone.
Is GLM-4-32B-0414-128K or GLM-4.5-Air better for production use?
Both GLM-4-32B-0414-128K and GLM-4.5-Air are production API models. For cost-sensitive production traffic, GLM-4-32B-0414-128K has better economics on the blended 1M-in + 1M-out scale. For maximum capability, weight the benchmark table for your domain. Many production stacks route cheap models for drafts and a frontier model for the hard turn, which is usually cheaper than sending everything to the expensive API.
Can I switch between GLM-4-32B-0414-128K and GLM-4.5-Air in my app?
Yes. Call GLM-4-32B-0414-128K through Z AI and GLM-4.5-Air through Z AI with separate API keys, or through a gateway that already wraps both. Keep prompts in tokens, not characters, when you estimate the invoice. AnotherWrapper templates can swap providers without rewriting auth and billing.
How accurate is this GLM-4-32B-0414-128K vs GLM-4.5-Air pricing data?
List rates are the latest published Z AI API pricing and Z AI API pricing, quoted per million tokens. Official rate sheets: https://docs.z.ai/guides/overview/pricing and https://docs.z.ai/guides/overview/pricing. Prompt caching, batch APIs, and committed-use discounts can change the invoice. Benchmark scores are from official publications and independent evals, updated as new numbers land.
What is the output token limit for GLM-4-32B-0414-128K and GLM-4.5-Air?
GLM-4-32B-0414-128K supports up to an unspecified number of output tokens per request, while GLM-4.5-Air supports up to an unspecified number of output tokens. Output tokens are usually the expensive half of API pricing, so a higher max output cap is a capability, not a discount.
Which model has better throughput, GLM-4-32B-0414-128K or GLM-4.5-Air?
Neither GLM-4-32B-0414-128K nor GLM-4.5-Air has published throughput data on this page yet. Throughput (tokens per second) and time-to-first-token are why two models with the same per-million-token price can still feel different in chat and agents.
How do I switch the models in this GLM-4-32B-0414-128K vs GLM-4.5-Air comparison?
Use the model pickers at the top of this LLM comparison. Search any model in the index and the URL updates. Open GLM-4-32B-0414-128K or GLM-4.5-Air from the sidebar for the single-model API pricing page, or go back to the LLM pricing table to sort by cheapest blended cost.
