All models
Head to head
GPT 5.2 Chat vs GPT-6.1 Terra
Price, context, inputs and filters. No benchmarks theatre.
GPT-6.1 Terra costs 2.1× less per message.
GPT-6.1 Terra holds 8.2× more context.
Fact
Made by
OpenAI
OpenAI
Content tier
Mainstream
Mainstream
Intelligence
Smart & Cheap
Smart & Cheap
Estimated price per message
~6.37 credits≈ 15 messages for $1
~3.06 credits≈ 32 messages for $1
Context window
128K tokens≈ 197 pages of text in one go
1.1M tokens≈ 1,615 pages of text in one go
Reads
Text, Images
Text, Images
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
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.