GPT-5.6 Sol vs Grok 4.6
API pricing, context window and capabilities for GPT-5.6 Sol and Grok 4.6, 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. Grok 4.6 wins on price.
Price
Grok 4.6
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
- Larger context window (1.1M vs 524K)
Grok 4.6 wins
- Cheaper output ($10.00 vs $6.00 /1M)
- Higher max output (128K vs 524K)
- More serving providers (6 vs 8)
Cheaper overall
Grok 4.6
$2.00 + $6.00 /1M
Larger context
GPT-5.6 Sol
1.1M
More providers
Grok 4.6
8 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 | Grok 4.6 | |
|---|---|---|
| Input $/1M | $2.00OpenRouter routed quote | $2.00via xAI |
| Output $/1M | $10.00OpenRouter routed quote | $6.00via xAI best |
| Context window | 1.1M best | 524K |
| Max output | 128K | 524K best |
| Serving providers | 6 | 8 best |
| Date | Released Jul 9, 2026 | Released Aug 10, 2026 |
Benchmarks
Benchmark scores, side by side| GPT-5.6 Sol | Grok 4.6 | |
|---|---|---|
| Intelligence | 47.0 best | 44.3 |
| Terminal-Bench | 90% best | 88% |
| GPQA Diamond | 94% | 95% best |
| Output speed | 94 t/s best | 56 t/s |
| Latency (TTFT) | 138.40s | 43.86s best |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
GPT-5.6 Sol
via OpenRouter
$20
Grok 4.6
via OpenRouter
$16
Capabilities
feature support, side by side| Feature | GPT-5.6 Sol | Grok 4.6 |
|---|---|---|
| Vision | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | ✓ |
| Audio | — | — |
| Prompt caching | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Web search | ✓ | ✓ |
Related comparisons
Frequently asked questions
Which is cheaper, GPT-5.6 Sol or Grok 4.6?
Grok 4.6 is cheaper for output ($10.00 vs $6.00 per 1M tokens) from xAI.
What is the context window difference between GPT-5.6 Sol and Grok 4.6?
GPT-5.6 Sol has a 1.1M-token context window and Grok 4.6 has 524K tokens, so GPT-5.6 Sol can take a larger prompt.
How do GPT-5.6 Sol and Grok 4.6 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
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