GPT-5.6 Sol vs Kimi K3
API pricing, context window and capabilities for GPT-5.6 Sol and Kimi K3, side by side. Prices are the cheapest listed serving route per 1M tokens, from LiteLLM and OpenRouter.
Verdict
computed from the published numbersGPT-5.6 Sol wins on Terminal-Bench, on intelligence and on context window.
Price
Tied
Terminal-Bench
GPT-5.6 Sol
Intelligence
GPT-5.6 Sol
Context window
GPT-5.6 Sol
Key takeaways
who wins on what, from the published numbersGPT-5.6 Sol wins
- Cheaper output ($10.00 vs $12.50 /1M)
- Larger context window (1.1M vs 1M)
- Has web search
Kimi K3 wins
- Cheaper input ($2.00 vs $0.70 /1M)
- Higher max output (128K vs 1M)
- More serving providers (6 vs 14)
Cheaper overall
GPT-5.6 Sol
$2.00 + $10.00 /1M
Larger context
GPT-5.6 Sol
1.1M
More providers
Kimi K3
14 providers
Pricing & specs
cheapest listed route · per 1M tokensOn-demand listed rates, OpenRouter routed quotes and Vercel reseller quotes. Enterprise commitments can be materially lower. An OpenRouter routed quote is the price of whichever upstream provider OpenRouter prefers today, so it moves day to day.
| GPT-5.6 Sol | Kimi K3 | |
|---|---|---|
| Input $/1M | $2.00OpenRouter routed quote | $0.70OpenRouter routed quote best |
| Output $/1M | $10.00OpenRouter routed quote best | $12.50via Sail |
| Context window | 1.1M best | 1M |
| Max output | 128K | 1M best |
| Serving providers | 6 | 14 best |
| Date | Released Jul 9, 2026 | Released Jul 16, 2026 |
Benchmarks
Benchmark scores, side by side| GPT-5.6 Sol | Kimi K3 | |
|---|---|---|
| Intelligence | 47.0 best | 43.6 |
| Terminal-Bench | 90% best | 85% |
| GPQA Diamond | 94% | 94% |
| Output speed | 94 t/s best | 45 t/s |
| Latency (TTFT) | 138.40s | 3.17s best |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
GPT-5.6 Sol
via OpenRouter
$20
Kimi K3
via OpenRouter
$19
Capabilities
feature support, side by side| Feature | GPT-5.6 Sol | Kimi K3 |
|---|---|---|
| Vision | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | ✓ |
| Audio | — | — |
| Prompt caching | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Web search | ✓ | — |
Related comparisons
Frequently asked questions
Which is cheaper, GPT-5.6 Sol or Kimi K3?
Kimi K3 is cheaper for input ($2.00 vs $0.70 per 1M tokens) as an OpenRouter routed quote, while Moonshot lists it at $3.00 per 1M input. GPT-5.6 Sol is cheaper for output ($10.00 vs $12.50 per 1M tokens) as an OpenRouter routed quote, while OpenAI lists it at $20.00 per 1M output.
What is the context window difference between GPT-5.6 Sol and Kimi K3?
GPT-5.6 Sol has a 1.1M-token context window and Kimi K3 has 1M tokens, so GPT-5.6 Sol can take a larger prompt.
How do GPT-5.6 Sol and Kimi K3 compare on benchmarks?
On the tracked benchmarks, GPT-5.6 Sol leads on Terminal-Bench, and GPT-5.6 Sol leads on intelligence.
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026
Every weekday
AI moves fast. Here's your debrief.
News, analysis, tools, and more.
For people who build with AI