Side by side
GPT-5.5 (batch) vs MiMo-V2.6-Pro-UltraSpeed
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) | $4.35 |
| Output priceUSD per 1M tokens | $15.00 | $8.70 (best) |
| Blended price75% in / 25% out | $5.63 | $5.44 (best) |
| Vs. market median | 6.6× dearer | 6.4× dearer |
| Value rankcheapest = 1 | #382 | #381 (best) |
| Context windowtokens | 1.1M (best) | 1.0M |
| Max outputtokens | 128K | 131K (best) |
| Input modalities | file, image, text | text, image, video, audio |
| Output modalities | text | text |
| Tool calling | Declared | Declared |
| Reasoning | Declared | Declared |
| Structured output | Declared | Declared |
| Listed on OpenRouter | 2026-04-24 | 2026-09-21 (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 | |
|---|---|---|---|---|---|---|
| Xiaomi: MiMo-V2.6-Pro-UltraSpeed Xiaomi · $4.35 in / $8.70 out per M | $217 | $131 | $348 | $4,176 | Cheapest | |
| OpenAI: GPT-5.5 (batch) OpenAI · $2.50 in / $15.00 out per M | $125 | $225 | $350 | $4,200 | +$2.00 (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
- Xiaomi: MiMo-V2.6-Pro-UltraSpeed is the cheapest here at $5.44/M blended; OpenAI: GPT-5.5 (batch) costs 3% more.
- OpenAI: GPT-5.5 (batch) offers the largest context window (1.1M tokens) versus 1.0M for Xiaomi: MiMo-V2.6-Pro-UltraSpeed.
Models
Model pages
Full pricing history, capabilities and alternatives for each model in this comparison.
OpenAI
$5.63
/M blended
$5.44
/M blended
More comparisons
Other head-to-heads
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- Gemini vs GPT-5: Google's flagship against OpenAI's
Gemini's very long context and multimodal input against GPT-5's ecosystem and pricing.
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