Grok 3 vs Amazon Nova Pro
A complete head-to-head: pricing, context window, benchmarks, modality coverage, and openness, with a programmatic verdict synthesized from the underlying data.
Updated
Grok 3 specs · Amazon Nova Pro specs- PriceAmazon Nova Pro
Amazon Nova Pro is roughly 4.7× cheaper on output tokens ($3.20 vs $15.00 per 1M).
- Context windowAmazon Nova Pro
Amazon Nova Pro accepts 300K tokens vs 128K, 2.3× the room for long documents and codebases.
- BenchmarksTie
No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores.
- ModalitiesAmazon Nova Pro
Amazon Nova Pro supports 3 modalities (text, vision, video) vs 2 for Grok 3.
- OpennessTie
Both are closed-weight, API-only.
On balance Amazon Nova Pro edges ahead, winning 3 of 5 categories against Grok 3's 0. Amazon Nova Pro is roughly 4.7× cheaper on output tokens ($3.20 vs $15.00 per 1M). Amazon Nova Pro accepts 300K tokens vs 128K, 2.3× the room for long documents and codebases.
No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores. They differ in modality coverage, Grok 3 handles text, vision while Amazon Nova Pro handles text, vision, video, which can be the deciding factor before you even look at benchmarks. Both are closed-weight, API-only.
Grok 3 is the newer of the two, released 3 months after Amazon Nova Pro, which usually means a more recent knowledge cutoff and updated safety post-training. Grok 3 is usually picked for chatbots and research agent workloads, while Amazon Nova Pro sees more deployments in enterprise llm and rag. If pricing matters more than every last benchmark point, run the numbers in the calculator below before committing.
Side-by-side specs
| Spec | Grok 3 | Amazon Nova Pro |
|---|---|---|
| Provider | xAI | Other |
| Released | Feb 2025 | Dec 2024 |
| Modalities | text, vision | text, vision, video |
| Context window | 128K tokens | 300K tokens |
| Max output | , | , |
| Input · 1M | $3.00 / 1M tokens | $0.80 / 1M tokens |
| Output · 1M | $15.00 / 1M tokens | $3.20 / 1M tokens |
| Knowledge cutoff | 2024-08 | , |
| Open weights | No | No |
| API available | Yes | Yes |
Pricing at scale
What you'd actually pay at typical workloads. Numbers come from each model's published per-million-token rates.
- Light usage, 100k in / 50k out per day$31.50 vs $7.20
- Heavy usage, 1M in / 500k out per day$315 vs $72.00
- RAG workload, 5M in / 200k out per day$540 vs $139
Light usage, 100k in / 50k out per day: $31.50 vs $7.20 per month, model B comes out ahead. Heavy usage, 1M in / 500k out per day: $315 vs $72.00 per month, model B comes out ahead. RAG workload, 5M in / 200k out per day: $540 vs $139 per month, model B comes out ahead.
Estimated spend for the listed models at your usage. Numbers are derived from each model's published per-million-token rates.
- Grok 3$1.05
- Amazon Nova Pro$0.240
Benchmarks compared
Only sourced numbers. Where a benchmark is missing for one model we show the available value rather than fabricating the other.
Grok 3 fits when…
- Real-time X access
- Reasoning modes
Amazon Nova Pro fits when…
- AWS-native
- Long context
- Multimodal incl. video
- Cost-sensitive workloads, 4.7× cheaper than Grok 3 on output tokens.
- Long-context tasks, handles 300K tokens vs 128K for Grok 3.
Consider Grok 4
xAI's mid-2025 flagship, top scores on Humanity's Last Exam at launch, with native real-time X integration.
Frequently asked
Is Grok 3 or Amazon Nova Pro cheaper?
Amazon Nova Pro is cheaper at $3.20 / 1M tokens per million output tokens, vs $15.00 / 1M tokens for Grok 3.Which has the larger context window?
Amazon Nova Pro accepts 300K tokens vs 128K for Grok 3.Is Grok 3 or Amazon Nova Pro better for coding?
Both Grok 3 and Amazon Nova Pro are competitive on coding benchmarks. See each model's individual spec page for HumanEval and SWE-bench scores where published. For an opinionated pick, consult our Best LLM for Coding ranking.Are either of these models open source?
Neither model ships open weights, both are accessible only via their respective providers' APIs.When were Grok 3 and Amazon Nova Pro released?
Grok 3 was released by xAI on 2025-02-17. Amazon Nova Pro was released by Other on 2024-12-03.
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