🇨🇳 China🔬 ReasoningReleased May 2025
DeepSeek R2
DeepSeek
Open-sourceFreeSelf-host
Verdict
A solid pick for self-hosting and full data control.
Overview
DeepSeek R2 applies RL-reinforced chain-of-thought (like o3) on the V3 base. Result: reasoning performance close to o3, but open-source and 20x cheaper. The 2025 revolution for scientific AI. Slow like o3 (thinks before answering).
Skill profile
Arena Elo1370
Verified benchmarks
GPQA75.8%
SWE-Bench49.2%
MATH95.1%
MMLU89%
HumanEval92.5%
What do these scores mean?
GPQA75.8%very good
PhD-level science questions (physics, chemistry, biology), with no tool access.
SWE-Bench49.2%fair
Resolving real GitHub issues under real conditions (SWE-bench Verified).
MATH95.1%world-class
Competition-level math problems.
MMLU89%excellent
General knowledge across dozens of academic subjects.
HumanEval92.5%world-class
Python code generation from specifications.
Strengths
- Top-tier reasoning
- Excellent at code
- World-class on Arena
- Has a free tier
Limitations
- Average speed
- No native GDPR guarantee
Who is it for
A good fit if…
- you need advanced reasoning or analysis
- you want to control cost or self-host
Skip it if…
- you handle sensitive EU data
- you need very fast responses
Ideal use cases
- Low-cost advanced math
- Open-source scientific research
- Proofs
- Self-hosted reasoning
Access & availability
Paid API per tokenFree tier availableSelf-hostable (open weights)
Key specifications
Context
128K
Input price
$0.55 $/M
Output price
$2.19 $/M
Speed
25 tok/s
Price not auditedBenchmarks not audited
Estimate your monthly cost
Per-token API pricing$32/ month with DeepSeek R2
For the same usage
- o3$117+264%
- Claude Opus 4.8$327+921%
- Claude Opus 4.7$327+921%
Indicative estimate based on standard API rates (excluding caching, batch and volume discounts). Always check the official pricing before committing.
Privacy
Not GDPR-compliantHosting : CN/selfAnonymizable data
Advanced data · for expertsArchitecture, modalities, detailed cost, full benchmarks▾
Advanced data · for experts
Architecture, modalities, detailed cost, full benchmarks
Architecture
MoE + RL
Size
685B (37B actifs MoE)
Cutoff date
Dec 2024
Inputs
text
Outputs
text, code
License
mit
Hosting
CN/self
Hallucination score
4/5
Estimated cost (API)
Typical exchange (~3k in / 1k out)
≈ $0.0038
1M in + 1M out
≈ $2.74
All benchmarks
| Arena Elo | 1370 |
| MMLU | 89.0% |
| GPQA | 75.8% |
| HumanEval | 92.5% |
| SWE-Bench | 49.2% |
| MATH | 95.1% |