Amazon Nova Pro vs GPT-5.5 Instant
Pricing, benchmarks, and use case comparison
Quick take
- •Amazon Nova Pro is meaningfully stronger at cost efficiency (82 vs 70 on our capability index).
- •GPT-5.5 Instant is meaningfully stronger at speed (92 vs 80).
- •Amazon Nova Pro is 84% cheaper on input tokens, which compounds fast on high-volume or agentic workloads.
- •GPT-5.5 Instant has a 1050000 context window vs 300K tokens - better for whole-repo or long-document work.
Specs comparison
| Amazon Nova Pro | GPT-5.5 Instant | |
|---|---|---|
| Provider | Amazon Web Services | OpenAI |
| Type | Closed source | Closed source |
| Context window | 300K tokens | ✓1050000 |
| Input / 1M tokens | ✓$0.80 | 5.00 |
| Output / 1M tokens | $3.20 | 30.00 |
| Release date | 2024-12 | 2026-05 |
Benchmarks
| Benchmark | Amazon Nova Pro | GPT-5.5 Instant |
|---|---|---|
| MMLU | ~85% | - |
| AIME 2025 | - | 81.2 |
| Terminal-Bench 2.0 | - | 82.7 |
| FrontierMath Tier 1–3 | - | 51.7 |
Scores sourced from official provider release posts and independent benchmark aggregators.
Which should you choose?
Choose Amazon Nova Pro if...
- →You are building on AWS and want native Bedrock integration
- →You need multimodal understanding of images or video plus text
- →You want a cost-balanced general model with a large context
- →You need enterprise controls: data residency, service tiers, prompt caching
Choose GPT-5.5 Instant if...
- →Interactive chat and everyday assistant tasks where responsiveness matters most
- →High-volume, latency-sensitive workloads that do not need deep reasoning
- →General questions, drafting, and summarization at speed