GLM-4.5 8B: pricing, context window and benchmarks
GLM-4.5 8B is a small open-weight model from Zhipu AI. It offers a 32,768-token context window, costs $1.46 per million input tokens and $6.70 per million output tokens, and averages 61.3 across the index's benchmark suite.
Pricing
GLM-4.5 8B costs $1.46 per million input tokens and $6.70 per million output tokens. A blended 3:1 input-to-output mix works out to about $2.77 per million tokens. Cached input is listed at $0.16 per million tokens.
| Item | Price | Notes |
|---|---|---|
| Input | $1.46 | per 1M tokens |
| Output | $6.70 | per 1M tokens |
| Cached input | $0.16 | per 1M tokens |
| Blended 3:1 | $2.77 | estimate per 1M tokens |
| 1M in + 1M out | $8.16 | estimate |
Benchmarks
Scores below are modelled estimates on a 0–100 scale. Use them to compare relative position, not as official vendor results.
| Benchmark | Score | Rank | Percentile | Relative |
|---|---|---|---|---|
| MMLU-Pro | 64.2 | 465 | 23th | |
| GPQA Diamond | 54.3 | 476 | 21th | |
| SWE-bench Verified | 48.4 | 434 | 28th | |
| HumanEval | 64.6 | 445 | 26th | |
| MATH-500 | 64.4 | 422 | 30th | |
| AIME 2025 | 53.7 | 427 | 29th | |
| LiveCodeBench | 53.7 | 414 | 31th | |
| IFEval | 72.5 | 425 | 29th | |
| TruthfulQA | 67.5 | 424 | 29th | |
| HellaSwag | 73.4 | 470 | 22th | |
| MMMU | 57.3 | 464 | 23th | |
| Arena Elo | 1269.0 | 462 | 23th |
What GLM-4.5 8B is good for
GLM-4.5 8B is a small model. That makes it a good fit for classification, extraction, routing, summarization and other high-volume jobs where latency and cost dominate. It is not the right pick for open-ended frontier reasoning, but at $1.46 per million input tokens it can handle a large share of production traffic.
Strengths
- Input price of $1.46 per million tokens is at or below the index median.
- Open weights make self-hosting, fine-tuning and data-residency review possible.
Trade-offs
- Average benchmark score is below the index median; test it on your own task.
- Less reliable on open-ended reasoning and complex multi-step instructions.
How it compares
| Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|
| Firesearch Mini | Fireworks AI | 32768 | $3.94 | 61.5 |
| GLM-4.5 8B | Zhipu AI | 32768 | $1.46 | 61.3 |
| Qwen3-Coder 8B | Alibaba Cloud | 32768 | $1.43 | 61.3 |
| Zephyr Chat | Hugging Face | 4096 | $1.49 | 61.3 |
| Llama 4 Scout 8B | Meta AI | 8192 | $1.46 | 61.2 |
| Mistral Large 3 7B | Mistral AI | 32768 | $1.44 | 61.1 |
FAQ
How much does GLM-4.5 8B cost?
GLM-4.5 8B is listed at $1.46 per million input tokens and $6.70 per million output tokens. Cached input is $0.16 per million tokens. A blended 3:1 input-to-output mix is about $2.77 per million tokens.
What is the context window of GLM-4.5 8B?
GLM-4.5 8B has a context window of 32,768 tokens and can emit up to 16,384 output tokens per request in this index.
Is GLM-4.5 8B open weights?
Yes. GLM-4.5 8B is listed as an open-weight model under a open weights licence.
How does GLM-4.5 8B score on benchmarks?
GLM-4.5 8B averages 61.3 across the scored benchmarks in this index, ranking #439 of 600 models. Its strongest relative result is Arena Elo at 1269.0.
What is GLM-4.5 8B best for?
GLM-4.5 8B is a small model. That makes it a good fit for classification, extraction, routing, summarization and other high-volume jobs where latency and cost dominate. It is not the right pick for open-ended frontier reasoning, but at $1.46 per million input tokens it can handle a large share of production traffic.