Side by side
GPT-4o (2024-11-20) vs GLM 5.3 Prime
Source: OpenRouter (live)
Live figures
The numbers
Best value in each row is highlighted. “Not declared” means the provider does not advertise the feature on its listing.
| Attribute | ||
|---|---|---|
| Input priceUSD per 1M tokens | $2.50 (best) | $2.80 |
| Output priceUSD per 1M tokens | $10.00 | $8.80 (best) |
| Blended price75% in / 25% out | $4.38 | $4.30 (best) |
| Vs. market median | 5.1× dearer | 5.1× dearer |
| Value rankcheapest = 1 | #358 | #355 (best) |
| Context windowtokens | 128K | 1M (best) |
| Max outputtokens | 16K | 131K (best) |
| Input modalities | text, image, file | text |
| Output modalities | text | text |
| Tool calling | Declared | Declared |
| Reasoning | Not declared | Declared |
| Structured output | Declared | Declared |
| Listed on OpenRouter | 2024-11-20 | 2026-09-23 (best) |
Blended price assumes a 3:1 input-to-output token mix. Median is across all 431 priced models.
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At your volume
Estimate the monthly bill for these models at your own token volumes.
| Model | Input | Output | Monthly | Yearly | vs cheapest | |
|---|---|---|---|---|---|---|
| Z.ai: GLM 5.3 Prime Z.ai (Zhipu) · $2.80 in / $8.80 out per M | $140 | $132 | $272 | $3,264 | Cheapest | |
| OpenAI: GPT-4o (2024-11-20) OpenAI · $2.50 in / $10.00 out per M | $125 | $150 | $275 | $3,300 | +$3.00 (1.0×) |
Estimates use list prices per million tokens from live provider listings. Cached-input, batch and volume discounts are not included, so real bills are often lower.
Read-out
What the numbers say
- Z.ai: GLM 5.3 Prime is the cheapest here at $4.30/M blended; OpenAI: GPT-4o (2024-11-20) costs 2% more.
- Z.ai: GLM 5.3 Prime offers the largest context window (1M tokens) versus 128K for OpenAI: GPT-4o (2024-11-20).
- Reasoning mode is declared for Z.ai: GLM 5.3 Prime only.
Models
Model pages
Full pricing history, capabilities and alternatives for each model in this comparison.
$4.38
/M blended
Z.ai (Zhipu)
$4.30
/M blended
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