token.app › Compare › DeepSeek V3.1 Terminus vs GPT-5.6 Luna

DeepSeek V3.1 Terminus vs GPT-5.6 Luna

GPT-5.6 Luna is 2.0× cheaper per token on a blended 3:1 basis. GPT-5.6 Luna accepts the larger context window (1.1M).

Head to head
Blended price uses a 3:1 input:output mix
DeepSeek V3.1 TerminusGPT-5.6 Luna
ProviderDeepSeekOpenAI
Input $/1M$0.270$0.100
Output $/1M$1.00$0.600
Blended $/1M$0.453$0.225
Context window164K1.1M
Max output33K128K
ReleasedSep 2025Jul 2026
LicenceOpen weightsProprietary
Choose DeepSeek V3.1 Terminus if…
  • Open weights — self-hostable
Choose GPT-5.6 Luna if…
  • Costs less per token — $0.225 vs $0.453 blended
  • Larger context window (1.1M)
  • Newer model (released Jul 2026)
FAQ
Which is better, DeepSeek V3.1 Terminus or GPT-5.6 Luna?
We do not hold independently-run benchmark scores covering both DeepSeek V3.1 Terminus and GPT-5.6 Luna, so we make no quality claim. Their pricing and specifications are compared on this page.
Is DeepSeek V3.1 Terminus cheaper than GPT-5.6 Luna?
GPT-5.6 Luna is cheaper: $0.225 versus $0.453 per million tokens blended at 3:1 input:output. Input alone: $0.270 vs $0.100. Output alone: $1.00 vs $0.600.
What context windows do DeepSeek V3.1 Terminus and GPT-5.6 Luna have?
DeepSeek V3.1 Terminus: 163,840 tokens. GPT-5.6 Luna: 1,050,000 tokens.
Who makes DeepSeek V3.1 Terminus and GPT-5.6 Luna?
DeepSeek V3.1 Terminus is made by DeepSeek. GPT-5.6 Luna is made by OpenAI.
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