DeepSeek R1 0528 Qwen3 8B vs DeepSeek V4 Pro 0813

Wins 0 of 3 benchmarks
$0.36 / task
Wins 1 of 3 benchmarks
DeepSeek R1 0528 Qwen3 8B5.9
DeepSeek V4 Pro 081310.6
DeepSeek R1 0528 Qwen3 8B—
DeepSeek V4 Pro 08131.5
DeepSeek R1 0528 Qwen3 8B—
DeepSeek V4 Pro 081334.9

Specs

SpecDeepSeek R1 0528 Qwen3 8BDeepSeek V4 Pro 0813
Input, per 1M$0.06$1.32
Output, per 1M$0.09$3.96
Cost per task?—$0.36
Speed, tok/s—104
Context33K1M
WeightsOpenOpen
ReleasedMay 2025Aug 2026
Memory (4-bit)4.1 GB990 GB
LicenceMITMIT
Commercial useAllowedAllowed
See images——
Read PDFs——
Hear audio——
Watch video——
Call tools✓✓
Force a tool call?✓
Return strict JSONPartial✓
Search the web??
Run code??
Use a computer??

What breaks when you switch

DeepSeek R1 0528 Qwen3 8B → DeepSeek V4 Pro 0813
Memory (4-bit): 4.1 GB → 990 GB
Pass back reasoning_content · Chat Completions›

With thinking and tools, return all prior reasoning_content even on turns without tool calls or the API returns HTTP 400.

Disable thinking mode first · Chat Completions›

Required and named tool choices return HTTP 400 in thinking mode; disable thinking first.

Parameters have no effect›

In thinking mode, temperature, presence_penalty and frequency_penalty have no effect.

top_p value is ignored›

In thinking mode, top_p is fixed at 0.95 with tools and 1.0 otherwise; in non-thinking mode it takes effect.

Stateless API · Responses›

Responses does not support previous_response_id or conversation; preserve conversation history in your client.

DeepSeek V4 Pro 0813 → DeepSeek R1 0528 Qwen3 8B
Context: 1M → 33K