R1 0528
ActiveMay 28th update to the [original DeepSeek R1](/deepseek/deepseek-r1) Performance on par with [OpenAI o1](/openai/o1), but open-sourced and with fully open reasoning tokens. It's 671B parameters in size, with 37B active...
Overview
May 28th update to the [original DeepSeek R1](/deepseek/deepseek-r1) Performance on par with [OpenAI o1](/openai/o1), but open-sourced and with fully open reasoning tokens. It's 671B parameters in size, with 37B active...
History
R1 0528 became available via the DeepSeek API on 2025-05-28.
Training & availability
Training data has a knowledge cutoff of 2025-03-31 — information about events after that date is unlikely to appear in the model's responses. DeepSeek has not released the underlying model weights — access is via their hosted API only.
Capabilities
-
Context window: 163K tokens.
-
Input modalities: text.
Limitations
-
The knowledge cutoff is 12 months old — this model will not know about recent events, releases, or API changes.
-
Text-only — cannot process images, audio, or video inputs.
Pricing
- Input: $0.5000 per 1M tokens
- Output: $2.1500 per 1M tokens
Use the cost calculator above to estimate monthly spend for your workload.
Quick start
Minimal example using the OpenRouter API. Copy, paste, replace the key.
from openai import OpenAI
client = OpenAI(
base_url="https://openrouter.ai/api/v1",
api_key="sk-or-...",
)
resp = client.chat.completions.create(
model="deepseek/deepseek-r1-0528",
messages=[{"role": "user", "content": "Explain quantum computing in one sentence."}],
)
print(resp.choices[0].message.content)Cost calculator
Estimate your monthly bill. Presets are typical workload sizes.
Providers & performance
5 providersMulti-provider inference routes for this model — sorted by throughput. Latency is time-to-first-token; throughput is output tokens per second. Data from OpenRouter, measured over the last 30 minutes.
| Provider | Throughput | Latency (TTFT) | Input $ / 1M | Output $ / 1M | Context | Quant | Supports |
|---|---|---|---|---|---|---|---|
| Together | 123tok/s | 631ms | $3 | $7 | 164K | fp8 | — |
| DeepInfra | 43tok/s | 526ms | $0.5 | $2.15 | 164K | fp4 | json |
| AtlasCloud | 25tok/s | 2.81 |
Popularity
Signals from open-source communities — not a quality measure, but useful for gauging adoption among developers.
Integrations & tooling support
- Tool calling
- Not supported
- Structured outputs
- Not supported
Price vs quality
Standard pricing band. Quality tier pending more benchmark coverage.
- Quality percentile
- —
- Effective price
- $1.74/1M
- Pricing breakdown
- $0.5/1M in
$2.15/1M out
Community ratings
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Comments
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