GLM 5.3 Prime vs Mercury 3
Price, context window & benchmark comparison
VS
Compare different models
Verdict: Mercury 3 is 26.5× cheaper than GLM 5.3 Prime on a typical 3:1 input/output mix.
| GLM 5.3 Prime | Mercury 3 | |
|---|---|---|
| Input price / 1M | $2.80 | $0.10 |
| Output price / 1M | $8.80 | $0.35 |
| Blended price (3:1) | $4.30 | $0.16 |
| Cached input / 1M | $0.56 | $0.01 |
| Context window | 1M | 1M |
| Max output | 131K | 131K |
| Intelligence index | — | — |
| Coding index | — | — |
| Providers | 1 | — |
| Best provider uptime (30m) | 100.0% | — |
| Vision input | No | No |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-09-23 | 2026-10-16 |
| Retirement | — | — |
Cost calculator
FAQ
Which is cheaper, GLM 5.3 Prime or Mercury 3?
Mercury 3 is 26.5× cheaper than GLM 5.3 Prime on a typical 3:1 input/output mix.
GLM 5.3 Prime vs Mercury 3: which has a bigger context window?
GLM 5.3 Prime: 1,000,000 tokens. Mercury 3: 1,000,000 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: GLM 5.3 Prime ≈ $10,000, Mercury 3 ≈ $375.00.
More comparisons
GLM 5.3 Prime vs GPT-6.1 TerraGLM 5.3 Prime vs GPT-6.1 Terra ProGLM 5.3 Prime vs Kimi K3.1 ProGLM 5.3 Prime vs MiniMax M3.1 FlashGLM 5.3 Prime vs DeepSeek V4.1 Flash 1017GLM 5.3 Prime vs Nemotron 3.5 Super VLGLM 5.3 Prime vs Gemini 4 ArgonGLM 5.3 Prime vs Claude Haiku 5.5GLM 5.3 Prime vs Nano Banana 2.1GLM 5.3 Prime vs Mistral Large 4GLM 5.3 Prime vs GPT-6.1 Sol ProGLM 5.3 Prime vs GPT-6.1 SolGLM 5.3 Prime vs Claude Sonnet 5.5GLM 5.3 Prime vs Qwen3.8 Max PrimeGLM 5.3 Prime vs Command A+GLM 5.3 Prime vs GPT-6 Luna ProMercury 3 vs GPT-6.1 TerraMercury 3 vs GPT-6.1 Terra ProMercury 3 vs Kimi K3.1 ProMercury 3 vs MiniMax M3.1 FlashMercury 3 vs DeepSeek V4.1 Flash 1017Mercury 3 vs Nemotron 3.5 Super VLMercury 3 vs Gemini 4 ArgonMercury 3 vs Claude Haiku 5.5