GPT-6.1 Terra vs Kimi K3.1 Pro
Detailed technical comparison between GPT-6.1 Terra (OpenAI) and Kimi K3.1 Pro (Moonshot AI). Review live API token pricing, context window capabilities, time-to-first-token latency, and verified benchmark scores side-by-side.
Comparison Snapshot
GPT-6.1 Terra
1,050,000 tokensTie
Equal CapabilityTie
Equal SpeedGPT-6.1 Terra
$1.00 / MTokGPT-6.1 Terra
GPT-6.1 Terra is the mid-tier model in OpenAI's GPT-6.1 series, priced below GPT-6.1 Sol. It is suited for everyday agentic, coding, and writing work, is particularly strong at understanding screenshots...
Kimi K3.1 Pro
Kimi K3.1 Pro is Moonshot AI's flagship open-weight multimodal reasoning model and a post-trained successor to Kimi K3, with a 1M-token context window. It is built for long-horizon coding, 3D...
Technical Specifications
🏆 = Superior Spec| Specification | GPT-6.1 Terra | Kimi K3.1 Pro |
|---|---|---|
| Provider | OpenAI | Moonshot AI |
| Context Window | 1,050,000 tokens🏆 | 1,048,576 tokens |
| Agent Suitability | Not yet benchmarked | Not yet benchmarked |
| Time to First Token (TTFT) | No public TTFT data | No public TTFT data |
| Deployment Model | managed api | managed api |
| Production Stability | Not verified | Not verified |
| API Available | Yes | Yes |
| Released Date | 2026-10-26 | 2026-10-23 |
API Pricing Comparison
Input Price per Million Tokens
GPT-6.1 Terra
$1.00
Kimi K3.1 Pro
$2.00
Output Price per Million Tokens
GPT-6.1 Terra
$5.00
Kimi K3.1 Pro
$10.00
💡 Cost Ratio: GPT-6.1 Terra is 2.0x cheaper per input token than Kimi K3.1 Pro.
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Benchmark Performance Metrics
Standardized Scores (0–100%)Scores show verified raw accuracy percentages across standardized AI evaluation suites. Higher bars indicate superior performance in that domain.
GPT-6.1 Terra Quirks & Gotchas
No developer gotchas reported.
Kimi K3.1 Pro Quirks & Gotchas
No developer gotchas reported.
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