Claude Opus 5 vs GPT-5.6 Sol — Price, Context, and Capability Compared
Claude Opus 5 vs GPT-5.6 Sol: which should I use?
Claude Opus 5 costs 2.7× more per blended million tokens than GPT-5.6 Sol. Claude Opus 5 has the larger context window (1,000,000 tokens). Default to GPT-5.6 Sol unless you specifically need Claude Opus 5's edge.
Spec comparison
| Claude Opus 5 | GPT-5.6 Sol | |
|---|---|---|
| Price (input) | $15.00/M | $5.00/M ✓ |
| Price (output) | $75.00/M | $30.00/M ✓ |
| Blended price | $30.00/M | $11.25/M ✓ |
| Context window | 1,000,000 tokens | 1,000,000 tokens |
| Max output | 128,000 tokens | 128,000 tokens |
| Modalities | text, vision | text, vision |
| Reasoning mode | Yes | Yes |
| Released | 2026-08 | 2026-06 |
| Speed | Not measured | 44 t/s |
Cost at scale (3:1 blended)
| Tokens / month | Claude Opus 5 | GPT-5.6 Sol | Delta |
|---|---|---|---|
| 1,000,000 | $30.00 | $11.25 | $18.75 (2.7×) |
| 10,000,000 | $300.00 | $112.50 | $187.50 (2.7×) |
| 100,000,000 | $3000.00 | $1125.00 | $1875.00 (2.7×) |
Choose Claude Opus 5 if…
- ✓Anthropic's strongest reasoning and coding
- ✓1M-token context
- ✓Extended-thinking mode for complex agentic work
- ✓The hardest reasoning, coding, and long-horizon agentic tasks.
Choose GPT-5.6 Sol if…
- ✓Strongest OpenAI model for agentic, long-horizon coding
- ✓Deep reasoning mode for multi-step planning
- ✓Native vision input and 1M context
- ✓Complex, multi-step professional and coding work where accuracy matters more than cost.
Run this exact matchup right now
Send the same prompt to Claude Opus 5 and GPT-5.6 Sol side by side and see the outputs yourself.
Try Claude Opus 5 vs GPT-5.6 Sol FreeFAQ
Is Claude Opus 5 cheaper than GPT-5.6 Sol?
GPT-5.6 Sol is cheaper, at $11.25 per million blended tokens vs $30.00 for Claude Opus 5.
Which has the bigger context window, Claude Opus 5 or GPT-5.6 Sol?
Both models support 1,000,000 tokens of context.
Can Claude Opus 5 replace GPT-5.6 Sol for coding?
Both are viable for coding. Anthropic's strongest reasoning and coding (Claude Opus 5) vs Strongest OpenAI model for agentic, long-horizon coding (GPT-5.6 Sol) — pick based on which strength matters more for your workload.
Neither of these? See Claude Opus 5 alternatives or GPT-5.6 Sol alternatives.
Related
Pricing verified 2026-07-09. Specs verified 2026-08-08.