All models
Head to head

Grok 4 Fast vs GPT-OSS 120B

Price, context, inputs and filters. No benchmarks theatre.

GPT-OSS 120B costs 1.2× less per message.

Grok 4 Fast holds 7.6× more context.

Made by
X-AI
OpenAI
Content tier
Open
Open
Intelligence
Quick
Smart & Cheap
Price per message
~0.52 credits≈ 192 messages for 1 €
~0.43 credits≈ 232 messages for 1 €
Context window
1M tokens≈ 1,538 pages of text in one go
131K tokens≈ 202 pages of text in one go
Reads
Text, Images
Text
Writes
Text
Text
Tool use
Yes - search, memory, code and more
Yes - search, memory, code and more
Served via
OpenRouter, Unbottled AI
OpenRouter, Unbottled AI
Status
Current
Current

A typical message: 16K tokens in, 1.5K out. Short replies cost less. 1 credit = 0.01 €.