All models
Head to head
GPT-5.6 Terra vs Claude Sonnet 5.5
Price, context, inputs and filters. No benchmarks theatre.
Both cost about the same per message.
Both hold the same amount of context.
Fact
Made by
OpenAI
Anthropic
Content tier
Mainstream
Mainstream
Intelligence
Smart & Cheap
Smart & Cheap
Estimated price per message
~6.5 credits≈ 15 messages for 1 €
~6.11 credits≈ 16 messages for 1 €
Context window
1.1M tokens≈ 1,615 pages of text in one go
1M tokens≈ 1,538 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 €.