Models

DeepSeek V4 Flash vs GPT Oss 20B (free)

Compare DeepSeek V4 Flash from DeepSeek and GPT Oss 20B (free) from OpenAI on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.

DeepSeekDeepSeek V4 FlashOpenAIGPT Oss 20B (free)
DeepSeek logo
DeepSeek V4 Flash
DeepSeek · text → text

DeepSeek V4 Flash 0423 is DeepSeek's efficiency-optimized Mixture-of-Experts text model, designed for fast inference and workflows requiring tool use, function calling, and structured outputs. It features 284B total parameters with 13B activated parameters and supports a 1M-token context window with cost-effective pricing.

Input$0.464 /M
Output$0.928 /M
Cache read$0.0039 /M
OpenAI logo
GPT Oss 20B (free)
OpenAI · text → text

Developed by OpenAI, gpt-oss-20b-free is an open-weight 21B parameter model released under the Apache 2.0 license. The model utilizes a Mixture-of-Experts (MoE) architecture with 3.6B active parameters per forward pass to ensure efficient processing. Additionally, it supports an expansive context length of 131,072 tokens for handling large-scale inputs.

Input$0 /M
Output$0 /M

Pricing & Specifications

Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.

DeepSeek V4 Flash
GPT Oss 20B (free)
Input /M
$0.464
$0
Output /M
$0.928
$0
Cache read /M
$0.0039
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Context length
1,000,000
131,072
Max output
0
131,072
Time to First Token
0.7 s
-
Throughput
59.0 tok/s
-
Modalities
text
text
Supported Parameters
toolsfunction callingstructured outputs
reasoningtool callinglong context
API Formats
chat_completions
Released
-
-

Promotional prices show the discounted rate; see each model page for promotion windows.

Activity Past 30 Days

Daily traffic served through AIHubMix — how demand for each model is trending.

deepseek-v4-flashgpt-oss-20b-free

Tokens / day

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Requests / day

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Performance Past 3 Days

Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.

deepseek-v4-flashgpt-oss-20b-free

Throughput (tok/s)

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TTFT (s)

-

Uptime (%)

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Cost calculator

Estimate your monthly bill for the same workload on each model.

GPT Oss 20B (free)
$0.00 /mo
DeepSeek V4 Flash
$41.76 /mo

Monthly = daily × 30. Discounted rates applied where a promotion is active.

FAQ

How large is each context window?

DeepSeek V4 Flash accepts 1,000,000 and GPT Oss 20B (free) accepts 131,072 input tokens.

What inputs and capabilities does each model support?

DeepSeek V4 Flash accepts text input and supports tool calling, function calling and structured outputs; GPT Oss 20B (free) accepts text input and supports reasoning, tool calling and long context.

Can I call DeepSeek V4 Flash and GPT Oss 20B (free) with the same API key?

Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.

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