All models
Head to head
GPT-5 vs Gemini 4 Hydrogen
Price, context, inputs and filters. No benchmarks theatre.
Both cost about the same per message.
Gemini 4 Hydrogen holds 2.6× more context.
Fact
Made by
OpenAI
Google
Content tier
Mainstream
Mainstream
Intelligence
Smart & Cheap
Brilliant
Estimated price per message
~4.55 credits≈ 21 messages for 1 €
~4.59 credits≈ 21 messages for 1 €
Context window
400K tokens≈ 615 pages of text in one go
1M tokens≈ 1,613 pages of text in one go
Reads
Text, Images
Text, Images, Video, Audio
Writes
Text
Text
Tool use
Yes - search, memory, code and more
Yes - search, memory, code and more
Served via
OpenRouter, Unbottled AI
OpenRouter
Status
Legacy
Current
A typical message: 16K tokens in, 1.5K out. Short replies cost less. Models served via OpenRouter bill the real provider cost plus our markup, so actual charges vary. 1 credit = 0.01 €.