Very long inputs
Choose GPT-5.6 Sol
GPT-5.6 Sol reads up to 1.05M tokens per request, against 256k for Kimi K2.7 Code.
GPT-5.6 Sol vs Kimi K2.7 Code: price, context and capabilities
Choose GPT-5.6 Sol for very long inputs, the hardest reasoning tasks, agentic coding, reasoning over long documents, images as input and the latest release. Choose Kimi K2.7 Code for tool use and support agents.
In short
- A price comparison is not possible: one of them has no comparable published price.
- GPT-5.6 Sol reads more per request: 1.05M tokens against 256k.
- GPT-5.6 Sol is the newer model (Jul 9, 2026, against Jun 12, 2026).
- Only GPT-5.6 Sol offers vision, reasoning, structured output, prompt caching, batch api.
Which should you choose?
Each answer below comes straight from the published prices, specifications and independent benchmark results.
Hardest reasoning tasks
Choose GPT-5.6 Sol
GPT-5.6 Sol scores 47 on the Artificial Analysis Intelligence Index, against 25.8 for Kimi K2.7 Code.
Agentic coding
Choose GPT-5.6 Sol
GPT-5.6 Sol scores 65.9% on Terminal-Bench Hard, against 44.7% for Kimi K2.7 Code.
Tool use and support agents
Choose Kimi K2.7 Code
Kimi K2.7 Code scores 90.1% on τ²-Bench (agentic tool use), against 85.1% for GPT-5.6 Sol.
Reasoning over long documents
Choose GPT-5.6 Sol
GPT-5.6 Sol scores 84% on Long-context reasoning (AA-LCR), against 79.3% for Kimi K2.7 Code.
Images as input
Choose GPT-5.6 Sol
GPT-5.6 Sol accepts images as input; Kimi K2.7 Code does not.
Latest release
Choose GPT-5.6 Sol
GPT-5.6 Sol is the newer release (Jul 9, 2026, against Jun 12, 2026 for Kimi K2.7 Code).
Specifications side by side
| GPT-5.6 Sol | Kimi K2.7 Code | |
|---|---|---|
| Provider | OpenAI | Moonshot AI |
| Category | Language models | Language models |
| Status | Generally available | Generally available |
| Headline price | $8.00 / 1M tokens | No data |
| Input | $4.00 / 1M tokens | No data |
| Output | $20.00 / 1M tokens | No data |
| Cached input | $0.40 / 1M tokens | No data |
| Context window | 1.05M | 256k |
| Max output | 128k | No data |
| Released | Jul 9, 2026 | Jun 12, 2026 |
| Knowledge cutoff | February 2026 | No data |
| Licence | Proprietary | Proprietary |
| Capabilities | Vision, Reasoning, Tool calling, Structured output, Prompt caching, Batch API | Tool calling |
| API model id | gpt-5.6-sol | kimi-k2.7-code |
Benchmarks side by side
Leader in bold.
| Benchmark | GPT-5.6 Sol | Kimi K2.7 Code |
|---|---|---|
| Intelligence Index | 47 | 25.8 |
| Terminal-Bench Hard | 65.9% | 44.7% |
| SciCode | 57.1% | 47.8% |
| GPQA Diamond | 94.1% | 89.6% |
| Humanity's Last Exam | 49.5% | 35% |
| IFBench (instruction following) | 72.7% | 63.1% |
| τ²-Bench (agentic tool use) | 85.1% | 90.1% |
| Long-context reasoning (AA-LCR) | 84% | 79.3% |
| MMMU-Pro (visual reasoning) | 83.4% | No data |
Independent evaluations by Artificial Analysis, run the same way for every model, at the reasoning setting shown. Percentages unless marked as an index.
Frequently asked questions
Should I choose GPT-5.6 Sol or Kimi K2.7 Code?
Choose GPT-5.6 Sol for very long inputs, the hardest reasoning tasks, agentic coding, reasoning over long documents, images as input and the latest release. Choose Kimi K2.7 Code for tool use and support agents.
Which is cheaper, GPT-5.6 Sol or Kimi K2.7 Code?
A price comparison is not possible: one of them has no comparable published price.
Which has the larger context window, GPT-5.6 Sol or Kimi K2.7 Code?
GPT-5.6 Sol reads more per request: 1.05M tokens against 256k.
What is the difference between GPT-5.6 Sol and Kimi K2.7 Code?
GPT-5.6 Sol is made by OpenAI and Kimi K2.7 Code by Moonshot AI. A price comparison is not possible: one of them has no comparable published price. GPT-5.6 Sol reads more per request: 1.05M tokens against 256k. GPT-5.6 Sol is the newer model (Jul 9, 2026, against Jun 12, 2026). Only GPT-5.6 Sol offers vision, reasoning, structured output, prompt caching, batch api.
Which is better for coding, GPT-5.6 Sol or Kimi K2.7 Code?
GPT-5.6 Sol scores 65.9% on Terminal-Bench Hard, against 44.7% for Kimi K2.7 Code.
Which is newer, GPT-5.6 Sol or Kimi K2.7 Code?
GPT-5.6 Sol was released on Jul 9, 2026 and Kimi K2.7 Code on Jun 12, 2026.