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Put up to 4 models beside each other — token prices, context windows, capabilities and provider, from the same catalogue the model pages read.

  1. GPT-5.6 TerraOpenAIRemove
  2. Kimi K3.1 ProMoonShot AIRemove
gpt-5.6-terra vs kimi-k3.1-pro
AttributeGPT-5.6 Terragpt-5.6-terraKimi K3.1 Prokimi-k3.1-pro
Pricing
Input$2.00 / 1M$2.00 / 1M
Output$12.00 / 1M$10.00 / 1M
Cache Write (5m)$2.00 / 1M$2.00 / 1M
Cache Write (1h)$2.00 / 1M$2.00 / 1M
Cache Read$2.00 / 1M$2.00 / 1M
Web Search$0 / 1M$0 / 1M
Context
Max context1M1M
Max outputN/AN/A
Capabilities
VisionYesYes
Function CallingYesYes
JSON ModeYesYes
StreamingYesYes
Catalogue
ProviderOpenAIMoonShot AI
Categorychatchat
Charge typePay As You GoPay As You Go
Released——
Description
SummaryGPT-5.6 Terra is the balanced model in OpenAI's GPT-5.6 series, positioned between the flagship Sol tier and the cost-efficient Luna tier. It is designed for everyday coding, reasoning, and agentic workflows, delivering strong performance while balancing capability and cost. Offering near-flagship quality at approximately half the cost of Sol, GPT-5.6 Terra is well suited for production applications that require reliable reasoning, software development, and scalable agent execution.Kimi K3.1 Pro is Moonshot AI's flagship open-weight multimodal reasoning model, building on Kimi K3 with enhanced post-training for advanced reasoning and autonomous task execution. It features a 1M-token context window and native image and video understanding, enabling complex, long-context multimodal workflows. Optimized for long-horizon coding, 3D creation, financial research, and end-to-end agentic knowledge work, Kimi K3.1 Pro is well suited for autonomous software engineering, multimodal analysis, and complex professional workflows that require sustained reasoning and reliable execution.