DeepSeek R1 vs o3 Mini
DeepSeek R1 (2025) and o3 Mini (2025) are frontier-tier reasoning models from DeepSeek and OpenAI. DeepSeek R1 ships a 128k-token context window, while o3 Mini ships a 200k-token context window. On SWE-bench Verified, o3 Mini leads by 0.1 pts. On pricing, DeepSeek R1 costs $0.10/1M input tokens versus $1.10/1M for the alternative. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
DeepSeek R1 is ~1000% cheaper at $0.10/1M; pay for o3 Mini only for coding workflow support.
Decision scorecard
Local evidence first| Signal | DeepSeek R1 | o3 Mini |
|---|---|---|
| Best for | reasoning-heavy apps and provider-routed production | reasoning-heavy apps, tool-calling agents, and provider-routed production |
| Decision fit | Coding, RAG, and Agents | Coding, RAG, and Agents |
| Context window | 128k | 200k |
| Cheapest output | $0.30/1M tokens | $4.40/1M tokens |
| Provider routes | 14 tracked | 4 tracked |
| Shared benchmarks | 4 shared | SWE-bench Verified leader |
Decision tradeoffs
- DeepSeek R1 holds a shared-benchmark lead on Chatbot Arena, ahead by 37 points.
- DeepSeek R1 has the lower cheapest tracked output price at $0.30/1M tokens.
- DeepSeek R1 has broader tracked provider coverage for fallback and route flexibility.
- Local decision data tags DeepSeek R1 for Coding, RAG, and Agents.
- o3 Mini holds a shared-benchmark lead on SWE-bench Verified, ahead by 0.1 points.
- o3 Mini has the larger context window for long prompts, retrieval packs, or transcript analysis.
- o3 Mini uniquely exposes JSON / Tool use in local model data.
- Local decision data tags o3 Mini for Coding, RAG, and Agents.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
DeepSeek R1
$155
Cheapest tracked route/tier: Bitdeer AI
o3 Mini
$1,980
Cheapest tracked route/tier: OpenRouter
Estimated monthly gap: $1,825. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on OpenRouter and Vercel AI Gateway; start route-level A/B tests there.
- o3 Mini is $4.10/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- o3 Mini adds JSON / Tool use in local capability data.
- Provider overlap exists on OpenRouter and Vercel AI Gateway; start route-level A/B tests there.
- DeepSeek R1 is $4.10/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for JSON / Tool use before moving production traffic.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-01-20 | 2025-01-31 |
| Context window | 128k | 200k |
| Parameters | 671B, 37B Active | — |
| Architecture | Decoder Only | Decoder Only |
| License | MITOSI-approved | Proprietary |
| Openness | Open source | Proprietary |
| Weights | Available | Not released |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: permitted | Commercial use: conditional |
| Knowledge cutoff | 2023-12 | 2025-04 |
Pricing and availability
| Pricing attribute | DeepSeek R1 | o3 Mini |
|---|---|---|
| Input price | $0.10/1M tokens | $1.10/1M tokens |
| Output price | $0.30/1M tokens | $4.40/1M tokens |
| Providers |
Capabilities
| Capability | DeepSeek R1 | o3 Mini |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | Yes | Yes |
| JSON / Tool use | No | Yes |
| Structured outputs | Yes | Yes |
| Code execution | Yes | Yes |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
| Benchmark | DeepSeek R1 | o3 Mini |
|---|---|---|
| SWE-bench Verified | 49.2 | 49.3 |
| Google-Proof Q&A | 71.5 | 79.7 |
| Chatbot Arena | 1372.0 | 1335.0 |
| Aider Polyglot | 56.9 | 60.4 |
Continue comparing
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Last reviewed: 2026-06-29. Data sourced from public model cards and provider documentation.