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Head-to-head comparison

R1 0528 vs DeepSeek V4 Pro 0813

R1 0528 (DeepSeek) and DeepSeek V4 Pro 0813 (DeepSeek) compared on the ModelCap Index, API price, context window, provider availability, weight access and every public benchmark board they share. Figures are the same ones shown on the live rankings; nothing here is a hidden score.

Snapshot as of 9 September 2026

As of 9 September 2026, DeepSeek V4 Pro 0813 holds the stronger ModelCap Index position (#20 vs #53); DeepSeek V4 Pro 0813 is 1.2× cheaper per output token ($1.74/1M vs $2.15/1M); and DeepSeek V4 Pro 0813 offers the longer context window (1M vs 164K tokens).

Which should you choose?

Choose R1 0528 if…

  • your workload is prompt-heavy — input tokens cost $0.50/1M against $0.579/1M.

Choose DeepSeek V4 Pro 0813 if…

  • you want the stronger overall ModelCap Index position — #20 against #53 (73.6 vs 57.4 points).
  • API cost matters — $1.74/1M output tokens against $2.15/1M, about 1.2× cheaper.
  • you need the longer context window — 1M tokens against 164K.
  • you want provider choice — 19 listed API providers against 4.
  • Arena coding is your yardstick — 1505 against 1464.
  • you want the more recently listed model — DeepSeek V4 Pro 0813 was listed 12 August 2026, R1 0528 28 May 2025.

R1 0528 vs DeepSeek V4 Pro 0813: specs, pricing and context

Specification comparison of R1 0528 and DeepSeek V4 Pro 0813
FieldR1 0528DeepSeekDeepSeek V4 Pro 0813DeepSeek
ModelCap Index position#53#20
Index score57.473.6
EvidenceMeasuredMeasured
Input price / 1M tokens$0.50$0.579
Output price / 1M tokens$2.15$1.74
Context window164K tokens1M tokens
Max output tokens33K393K
API providers listed419
Weight accessOpen weightsOpen weights
Input modalitiesTextText
First listed28 May 202512 August 2026
PublisherDeepSeekDeepSeek

Evidence: 2 public benchmark observations across 2 boards · 4 public benchmark observations across 4 boards. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: R1 0528 vs DeepSeek V4 Pro 0813

Public benchmark boards where R1 0528 or DeepSeek V4 Pro 0813 has a published result
BoardR1 0528DeepSeek V4 Pro 0813Leads
Arena codingArena (LMArena)14641453–147515051490–1519HighDeepSeek V4 Pro 0813
ARC-AGI-2ARC Prize Foundation—61.3%MaxOnly one result
AA Intelligence IndexArtificial Analysis—36.3intelligence-index:v4.3:maxOnly one result
AA Terminal-Bench 2.1Artificial Analysis—78.7%terminal-bench:2.1:terminus-2:e2b:pass-at-1:3-repeats:source-model="DeepSeek V4 Pro 0813 (max)":reasoning=trueOnly one result
AA Humanity's Last ExamArtificial Analysis—41.0%hle:may-2025:text-only-2158:no-tools:pass-at-1:source-model="DeepSeek V4 Pro 0813 (max)":reasoning=trueOnly one result

Scores are the sources' own published figures for each model's best evaluated configuration; ModelCap never re-runs a benchmark.

Want a different pairing? Open the interactive comparison tool to swap either model for any current ranked language model.

R1 0528 vs DeepSeek V4 Pro 0813: common questions

Is R1 0528 better than DeepSeek V4 Pro 0813?

DeepSeek V4 Pro 0813 ranks higher on the ModelCap Index as of 9 September 2026: #20 against #53. That is a capability ranking built from public benchmark evidence with published uncertainty; whether it is "better" for you also depends on price, context and where you can run it. Their published uncertainty intervals do not overlap, but the aggregate Index does not predict performance on every task; compare the relevant benchmark configurations before choosing.

Is R1 0528 cheaper than DeepSeek V4 Pro 0813?

DeepSeek V4 Pro 0813 is cheaper on output tokens: $1.74/1M against $2.15/1M. Input tokens are $0.50/1M for R1 0528 and $0.579/1M for DeepSeek V4 Pro 0813. Prices are the lowest listed API offer ModelCap observed, in USD per million tokens. For 1,000 requests with 2,000 input and 500 output tokens each (2M input + 0.5M output), the listed-rate estimate is $2.08 for R1 0528 versus $2.03 for DeepSeek V4 Pro 0813. DeepSeek V4 Pro 0813 costs 2.3% less in this scenario. This excludes caching, batch discounts, prompt-length tiers, tool charges and retries; verify the selected endpoint before budgeting.

Which has the bigger context window, R1 0528 or DeepSeek V4 Pro 0813?

DeepSeek V4 Pro 0813 has the larger context window: 1M tokens against 164K.

Which is better for coding, R1 0528 or DeepSeek V4 Pro 0813?

Arena coding: R1 0528 1464, DeepSeek V4 Pro 0813 1505 — DeepSeek V4 Pro 0813 leads.

Are R1 0528 and DeepSeek V4 Pro 0813 open-weight models?

R1 0528: Open weights. DeepSeek V4 Pro 0813: Open weights. Open weights mean the checkpoint can be downloaded and self-hosted under its licence; API-only models are available solely through hosted endpoints.

Where can I run R1 0528 and DeepSeek V4 Pro 0813?

ModelCap currently lists 4 API providers for R1 0528 and 19 for DeepSeek V4 Pro 0813, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this R1 0528 vs DeepSeek V4 Pro 0813 comparison?

Every figure comes from the sealed ModelCap dataset published 9 September 2026; the page re-renders within a minute of each data refresh, and the ModelCap Index positions are the same ones shown on the live rankings.

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