Claude Opus 5 vs GPT-5.6 Sol
API pricing, context window and capabilities for Claude Opus 5 and GPT-5.6 Sol, side by side. Prices are the cheapest listed serving route per 1M tokens, from LiteLLM and OpenRouter.
Verdict
computed from the published numbersClaude Opus 5 wins on intelligence. GPT-5.6 Sol wins on price, on Terminal-Bench and on context window.
Price
GPT-5.6 Sol
Terminal-Bench
GPT-5.6 Sol
Intelligence
Claude Opus 5
Context window
GPT-5.6 Sol
Key takeaways
who wins on what, from the published numbersClaude Opus 5 wins
- More serving providers (9 vs 6)
GPT-5.6 Sol wins
- Cheaper input ($5.00 vs $2.00 /1M)
- Cheaper output ($25.00 vs $10.00 /1M)
- Larger context window (1M vs 1.1M)
Cheaper overall
GPT-5.6 Sol
$2.00 + $10.00 /1M
Larger context
GPT-5.6 Sol
1.1M
More providers
Claude Opus 5
9 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.
| Claude Opus 5 | GPT-5.6 Sol | |
|---|---|---|
| Input $/1M | $5.00via Anthropic | $2.00OpenRouter routed quote best |
| Output $/1M | $25.00via Anthropic | $10.00OpenRouter routed quote best |
| Context window | 1M | 1.1M best |
| Max output | 128K | 128K |
| Serving providers | 9 best | 6 |
| Date | Released Jul 24, 2026 | Released Jul 9, 2026 |
Benchmarks
Benchmark scores, side by side| Claude Opus 5 | GPT-5.6 Sol | |
|---|---|---|
| Intelligence | 50.8 best | 47.0 |
| Terminal-Bench | 89% | 90% best |
| GPQA Diamond | 93% | 94% best |
| Output speed | 56 t/s | 94 t/s best |
| Latency (TTFT) | 107.27s best | 138.40s |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
Claude Opus 5
via OpenRouter
$50
GPT-5.6 Sol
via OpenRouter
$20
Capabilities
feature support, side by side| Feature | Claude Opus 5 | GPT-5.6 Sol |
|---|---|---|
| Vision | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | ✓ |
| Audio | — | — |
| Prompt caching | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Web search | ✓ | ✓ |
Related comparisons
Frequently asked questions
Which is cheaper, Claude Opus 5 or GPT-5.6 Sol?
GPT-5.6 Sol is cheaper for input ($5.00 vs $2.00 per 1M tokens) as an OpenRouter routed quote, while OpenAI lists it at $4.00 per 1M input. GPT-5.6 Sol is cheaper for output ($25.00 vs $10.00 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 Claude Opus 5 and GPT-5.6 Sol?
Claude Opus 5 has a 1M-token context window and GPT-5.6 Sol has 1.1M tokens, so GPT-5.6 Sol can take a larger prompt.
How do Claude Opus 5 and GPT-5.6 Sol compare on benchmarks?
On the tracked benchmarks, GPT-5.6 Sol leads on Terminal-Bench, and Claude Opus 5 leads on intelligence.
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026
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