GPT-5.5 vs MiMo-V2.5-Pro
API pricing, context window and capabilities for GPT-5.5 and MiMo-V2.5-Pro, side by side. Prices are the cheapest listed serving route per 1M tokens, from LiteLLM and OpenRouter.
Verdict
computed from the published numbersGPT-5.5 wins on Terminal-Bench, on intelligence and on context window. MiMo-V2.5-Pro wins on price.
Price
MiMo-V2.5-Pro
Terminal-Bench
GPT-5.5
Intelligence
GPT-5.5
Context window
GPT-5.5
Key takeaways
who wins on what, from the published numbersGPT-5.5 wins
- Larger context window (1.1M vs 1M)
- More serving providers (6 vs 4)
- Supports vision
- Has web search
MiMo-V2.5-Pro wins
- Cheaper input ($5.00 vs $0.435 /1M)
- Cheaper output ($30.00 vs $0.87 /1M)
- Higher max output (128K vs 131K)
Cheaper overall
MiMo-V2.5-Pro
$0.435 + $0.87 /1M
Larger context
GPT-5.5
1.1M
More providers
GPT-5.5
6 providers
Pricing & specs
cheapest listed route · per 1M tokensOn-demand listed rates, OpenRouter routed quotes and Vercel reseller quotes. Enterprise commitments can be materially lower. An OpenRouter routed quote is the price of whichever upstream provider OpenRouter prefers today, so it moves day to day.
| GPT-5.5 | MiMo-V2.5-Pro | |
|---|---|---|
| Input $/1M | $5.00via OpenAI | $0.435OpenRouter routed quote best |
| Output $/1M | $30.00via OpenAI | $0.87OpenRouter routed quote best |
| Context window | 1.1M best | 1M |
| Max output | 128K | 131K best |
| Serving providers | 6 best | 4 |
| Date | Released Apr 23, 2026 | Released Apr 22, 2026 |
Benchmarks
Benchmark scores, side by side| GPT-5.5 | MiMo-V2.5-Pro | |
|---|---|---|
| Intelligence | 38.4 best | 26.0 |
| Terminal-Bench | 84% best | 65% |
| GPQA Diamond | 94% best | 87% |
| Output speed | 102 t/s best | 39 t/s |
| Latency (TTFT) | 70.60s | 2.31s best |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
GPT-5.5
via OpenAI
$55
MiMo-V2.5-Pro
via OpenRouter
$3.04
Capabilities
feature support, side by side| Feature | GPT-5.5 | MiMo-V2.5-Pro |
|---|---|---|
| Vision | ✓ | — |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | ✓ |
| Audio | — | — |
| Prompt caching | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Web search | ✓ | — |
Related comparisons
Frequently asked questions
Which is cheaper, GPT-5.5 or MiMo-V2.5-Pro?
MiMo-V2.5-Pro is cheaper for input ($5.00 vs $0.435 per 1M tokens) as an OpenRouter routed quote. MiMo-V2.5-Pro is cheaper for output ($30.00 vs $0.87 per 1M tokens) as an OpenRouter routed quote.
What is the context window difference between GPT-5.5 and MiMo-V2.5-Pro?
GPT-5.5 has a 1.1M-token context window and MiMo-V2.5-Pro has 1M tokens, so GPT-5.5 can take a larger prompt.
How do GPT-5.5 and MiMo-V2.5-Pro compare on benchmarks?
On the tracked benchmarks, GPT-5.5 leads on Terminal-Bench, and GPT-5.5 leads on intelligence.
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026
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