DeepseekReasoningReleased 28 May 2025
R1 0528 pricing, context and benchmark
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.
164K
Input context
147K
Output context
$0.5
Official input
$2.15
Official output
n/a
AA index
01 · Model Overview
Everything that matters, in one table
Context, pricing, cache, modalities and tooling, from the model registry and Artificial Analysis.
| Model | R1 0528 |
| Model ID | deepseek/deepseek-r1-0528 |
| Provider | Deepseek |
| Release date | 28 May 2025 |
| Status | Generally available |
| Input context | 163,840 tokens |
| Output context | 147,456 tokens |
| Official input pricing | $0.5 per 1M tokens |
| Official output pricing | $2.15 per 1M tokens |
| Cache read pricing | Not published |
| Market input pricing | $0.5 per 1M (cheapest route) |
| Market output pricing | $2.15 per 1M (cheapest route) |
| Highest route pricing | $0.571 in, $2.286 out per 1M |
| Input modalities | text |
| Output modalities | text |
| Reasoning control | Not exposed |
| Tool support | Text generation only |
| Tokenizer | DeepSeek |
| Provider routes | 3 endpoints |
| Artificial Analysis index | Not published |
| Speed | Not published |
| Knowledge cutoff | Not publicly stated |
Input and output support
| Modality | Input | Output | Billed at |
|---|---|---|---|
| Text | ✓ yes | ✓ yes | $0.5 in |
| Image | no | no | not supported |
| Audio | no | no | not supported |
| Video | no | no | not supported |
| File (PDF) | no | no | not supported |
02 · Overview
What is R1 0528?
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...
R1 0528 carries a 164K token window, uses the DeepSeek tokenizer and is served by Deepseek. On Hoodgen it sits in the Reasoning tier of the model menu next to its siblings, so you can switch mid conversation without losing the thread.
03 · Release
Release and what changed from the previous version
Released28 May 2025
This is the only release of R1 0528 on OpenRouter, released 28 May 2025. The provider has not published a knowledge cutoff, so treat training data as recent but unconfirmed for very new events.
07 · Use cases
What can you do with R1 0528?
Debugging and root cause
Multi file failures where the model has to hold a causal chain before answering.
Architecture and planning
Design docs, migration plans and trade off analysis over long context.
Data analysis
Spreadsheets and logs read in one pass, then summarised with the numbers quoted back.
Agentic coding
Repo wide changes that need plan, edit and verify loops.
09 · Pricing
R1 0528 pricing
Official pricing
List price
$0.5 / 1M in
$2.15 / 1M out
- 164K context
- text input
Cheapest route
$0.5 / 1M in
$2.15 / 1M out
- 3 routes on OpenRouter
- What Hoodgen routes to first
- Same model, lower bill
Highest route
$0.571 / 1M in
$2.286 / 1M out
- Priority or premium tier
- Best under load
- Use for latency critical calls
Market pricing, every route
| Provider | Tier | Input | Output | Cache read | Uptime 24h |
|---|---|---|---|---|---|
| DeepInfra | standard | $0.5 | $2.15 | $0.35 | 100.0% |
| SiliconFlow | standard | $0.5 | $2.18 | n/a | 85.7% |
| StreamLake | standard | $0.571 | $2.286 | n/a | 100.0% |
API pricing and cost calculator
| Rate | Per call | Total | Credits |
|---|---|---|---|
| Cheapest route | $0.0114 | $5.71 | 5427 |
| List price | $0.0132 | $6.61 | 6282 |
| Highest route | $0.0148 | $7.42 | 7054 |
10 · Developers
API and developer information
| Model ID | deepseek/deepseek-r1-0528 |
| Endpoint | https://openrouter.ai/api/v1/chat/completions |
| Parameters | prompt and max_tokens |
| Streaming | Yes, server sent events |
| Modality string | text->text |
| Max prompt tokens | 163,840 |
| Max completion tokens | 147,456 |
curl https://openrouter.ai/api/v1/chat/completions \
-H "Authorization: Bearer $OPENROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "deepseek/deepseek-r1-0528",
"messages": [{ "role": "user", "content": "Summarise this document." }],
"max_tokens": 1024
}'11 · Limitations
Model limitations
| Text only output | It cannot generate images, audio or video. Pair it with an image model on Hoodgen when you need visuals. |
| Output cap | 147,456 tokens per request. Long deliverables have to be chunked. |
| Benchmarks not published | Artificial Analysis does not publish an Intelligence Index for this release, so no benchmark score is claimed here. |
| Knowledge cutoff | The provider does not state a fixed cutoff for every release. Verify very recent events against search. |
12 · Comparison
R1 0528 vs other Deepseek models
| Model | Context | Input /1M | Output /1M | AA index | Released |
|---|---|---|---|---|---|
| R1 0528 | 164K | $0.5 | $2.15 | n/a | 2025 |
| DeepSeek V4 Pro 0423 | 1.05M | $0.9 | $1.5 | n/a | 2026 |
| DeepSeek V3.1 | 164K | $0.25 | $0.95 | n/a | 2025 |
| V4 Flash Vision Exp | 1.05M | $0.216 | $0.647 | n/a | 2026 |
| DeepSeek V4 Pro 0813 | 1.05M | $0.1 | $8 | n/a | 2026 |
| DeepSeek V4.1 Flash | 1.05M | $0.051 | $0.567 | n/a | Sep 2026 |
13 · Privacy
Privacy and data policy
- On Hoodgen, prompts and attachments answer that request and stay in your conversation history so you can reopen it. They are not used to train models.
- Requests route through OpenRouter to Deepseek and are covered by that provider's API terms.
- Do not paste secrets or personal data you would not send to any hosted model.
14 · FAQ
R1 0528 questions, answered
R1 0528 is a reasoning model from Deepseek, released 28 May 2025. 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.
✦
Start chatting with R1 0528
Free to try on Hoodgen AI, with a live credit estimate before every send. No API key, no setup.