GPT-5.5 vs DeepSeek R1
Compare pricing, context windows, and strengths for GPT-5.5 by OpenAI and DeepSeek R1 by DeepSeek - and see how to put either to work in Appaca.
GPT-5.5
OpenAI's smartest and most capable model yet for agentic coding, knowledge work, and computer use, delivering a new class of intelligence at GPT-5.4 latency.
View GPT-5.5DeepSeek R1
A fast, real-time decision-making model optimized for rapid analysis, dynamic adjustments, and responsive AI behavior.
View DeepSeek R1GPT-5.5 vs DeepSeek R1 at a glance
Specs and pricing side by side, from the Appaca AI models directory.
| Spec | GPT-5.5 | DeepSeek R1 |
|---|---|---|
| Provider | OpenAI | DeepSeek |
| Model type | Text | Text |
| Context window | 1M tokens | - |
| Input price | $5 / 1M tokens | - |
| Output price | $30 / 1M tokens | - |
| Status | Current | Current |
How GPT-5.5 and DeepSeek R1 differ
What the numbers mean in practice when choosing between GPT-5.5 and DeepSeek R1.
Strengths side by side
Where each model shines, according to benchmarks and provider positioning.
GPT-5.5
1. Strongest Agentic Coding Model
- State-of-the-art on Terminal-Bench 2.0 (82.7%), Expert-SWE (73.1%), and SWE-Bench Pro (58.6%), outperforming GPT-5.4 on complex coding tasks.
- Holds context across large systems, reasons through ambiguous failures, and carries changes through surrounding codebases with fewer tokens.
2. Higher Intelligence at GPT-5.4 Latency
- Co-designed, trained, and served on NVIDIA GB200/GB300 NVL72 systems to match GPT-5.4 per-token latency while performing at a significantly higher level.
- Uses fewer tokens to complete the same tasks, making it more efficient as well as more capable.
3. Powerful for Knowledge Work & Computer Use
- Scores 84.9% on GDPval (44 occupations) and 78.7% on OSWorld-Verified for autonomous computer operation.
- Excels at generating documents, spreadsheets, and reports; naturally moves across finding information, using tools, and checking output.
4. Scientific Research Co-Scientist
- Leading performance on GeneBench, BixBench, and FrontierMath; helped discover a new proof about Ramsey numbers verified in Lean.
- Strong enough to meaningfully accelerate progress at the frontiers of biomedical and mathematical research.
DeepSeek R1
1. Real-time reasoning and decision-making
- Built for scenarios that require instant output.
- Great for applications with fast-changing data.
2. Excellent for dynamic optimization
- Pricing adjustments, recommendations, routing, and system tuning.
3. Strong performance in finance and e-commerce
- Tracks market shifts.
- Updates predictions on the fly.
- Optimizes recommendations in real time.
4. High-speed pattern recognition
- Quickly interprets signals from streaming data.
- Useful in trading bots, alerts, and monitoring systems.
Use GPT-5.5 or DeepSeek R1 - or both
Appaca is the AI workspace for operators. Build internal tools and AI co-workers powered by GPT-5.5 or DeepSeek R1 - connected to your real data and ready for your whole team. No code, no deployment.
Describe it, and it's built
Tell the Appaca agent the internal tool you need and it builds a working app powered by GPT-5.5 or DeepSeek R1. No code, no API keys, no deployment.
Switch models without rebuilding
Start on GPT-5.5, test the same tool on DeepSeek R1, and keep whichever performs better - the rest of your app stays exactly as it is.
Automated for the whole team
Schedule tools to run on autopilot - daily digests, weekly reports, real-time triggers - and share them with your whole team from one workspace.
Describe it, and it's built
Tell the Appaca agent what your team needs and it builds a working app powered by GPT-5.5 or DeepSeek R1 - connected to the tools you already use.
Related comparisons
See how GPT-5.5 and DeepSeek R1 stack up against other models in the directory.
FAQs
Pricing models differ: see the full GPT-5.5 and DeepSeek R1 pages in the Appaca AI models directory for current pricing details.
Context window data is listed on each model's page in the Appaca AI models directory.
It depends on the job. Compare the pricing, context window, and strengths above against your workload - and remember the choice isn't permanent. In Appaca you can build a tool on GPT-5.5, test the same tool on DeepSeek R1, and switch at any time without rebuilding anything.
Yes. Appaca is a no-code AI workspace: describe the internal tool your team needs and the Appaca agent builds it as a working app powered by GPT-5.5, DeepSeek R1, or any other model in the directory - with a built-in database, team access, and integrations. No API keys to wire up and nothing to deploy.
Build AI tools with GPT-5.5 or DeepSeek R1
Describe the tool your team needs and get a working app powered by the model you choose - with a built-in database, team access, and integrations. No code, no deployment.