AI model comparison
GPT-5.5 vs Claude Opus 4.7
Pricing, context window, benchmarks, and features compared side by side. Or skip the guesswork and send one prompt to both.
OpenAI
GPT-5.5
GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks.
- Input / 1M
- $5
- Output / 1M
- $30
- Context
- 1.05M
Anthropic
Claude Opus 4.7
Opus 4.7 is the next generation of Anthropic's Opus family, built for long-running, asynchronous agents.
- Input / 1M
- $5
- Output / 1M
- $25
- Context
- 1M
At a glance
Quick verdict
How the two models stack up on the things people ask about most.
Lower price
Claude Opus 4.7
1.1x cheaper for a typical chat
Higher intelligence score
Claude Opus 4.7
40.7 vs 38.4 on Artificial Analysis
Larger context window
GPT-5.5
1.05M vs 1M tokens
Newer release
GPT-5.5
Released April 24, 2026
Benchmarks
Benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
GPT-5.538.4Claude Opus 4.740.7Coding index
GPT-5.574.9Claude Opus 4.773.6Agentic index
GPT-5.536.4Claude Opus 4.738.6Pricing
GPT-5.5 vs Claude Opus 4.7 API pricing
Per-token API rates. Cheaper option highlighted.
| Metric | GPT-5.5 | Claude Opus 4.7 |
|---|---|---|
| Input tokensPer 1M tokens | $5 | $5 |
| Output tokensPer 1M tokens | $30 | $25 |
| Cached input (read)Per 1M tokens | $0.50 | $0.50 |
| Cache writePer 1M tokens | Not available | $6.25 |
| Long-context pricingPer 1M tokens, for very long prompts | $10 in / $45 out above 272K | Same rate at any length |
| Web searchPer request | $0.01 | $0.01 |
What it costs in practice
Estimated cost per 1,000 requests at standard rates. Coding and long-document figures also show the cost when the input is already cached.
Chat message
2K in, 500 out
GPT-5.5$25Claude Opus 4.7$22.50Coding task
30K in, 4K out
GPT-5.5$270$135 cachedClaude Opus 4.7$250$115 cachedLong document summary
150K in, 2K out
GPT-5.5$810$135 cachedClaude Opus 4.7$800$125 cachedSpecs
Context window and capabilities
How much each model can read, how much it can write, and what it accepts as input.
| Metric | GPT-5.5 | Claude Opus 4.7 |
|---|---|---|
| Context window | 1.05M tokens | 1M tokens |
| Max output | 128K tokens | 128K tokens |
| Input types | File, Image, Text | File, Image, Text |
| Output types | Text | Text |
| Reasoning effort levels | Extra high, High, Medium, Low, None | Max, Extra high, High, Medium, Low |
| Default reasoning effort | Medium | High |
| Release date | April 24, 2026 | April 16, 2026 |
Features
Supported features
API features available for each model.
| Metric | GPT-5.5 | Claude Opus 4.7 |
|---|---|---|
| Tool calling | Supported | Supported |
| Structured outputs | Supported | Supported |
| JSON mode | Supported | Supported |
| Reasoning | Supported | Supported |
| Temperature | Not supported | Not supported |
| Stop sequences | Not supported | Supported |
| Deterministic seed | Supported | Not supported |
| Verbosity control | Supported | Supported |
Keep exploring
More on these models
Other head-to-heads, the full model page, and the alternatives list for each model.
Claude Opus 4.7View full model details- Claude Opus 4.7 vs Claude Opus 5
- Claude Opus 4.7 vs GLM 5.3
- Claude Opus 4.7 vs Kimi K3
- Claude Opus 4.7 vs GPT-5.6 Terra
- Claude Opus 4.7 vs Claude Opus 4.8
- Claude Opus 4.7 vs Gemini 3.8 Flash
- Claude Opus 4.7 vs DeepSeek V4.1 Flash
- Claude Opus 4.7 vs GPT-5.4
- Claude Opus 4.7 vs Claude Sonnet 5
- Claude Opus 4.7 vs Claude Opus 4.6
Our take
Claude Opus 4.7 is 1.1x cheaper for a typical chat. Claude Opus 4.7 scores higher on the Artificial Analysis Intelligence Index (40.7 vs 38.4). GPT-5.5 has the larger context window (1.05M vs 1M tokens). The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.
FAQ
Frequently asked questions
Is GPT-5.5 or Claude Opus 4.7 cheaper?
Claude Opus 4.7 is cheaper for a typical chat (2K input tokens and 500 output tokens). Claude Opus 4.7 costs $5 per 1M input tokens and $25 per 1M output tokens, while GPT-5.5 costs $5 per 1M input tokens and $30 per 1M output tokens.
Which has a bigger context window, GPT-5.5 or Claude Opus 4.7?
GPT-5.5 supports up to 1.05M tokens of context, compared with 1M for Claude Opus 4.7.
Is GPT-5.5 smarter than Claude Opus 4.7?
On the Artificial Analysis Intelligence Index, GPT-5.5 scores 38.4 and Claude Opus 4.7 scores 40.7, putting Claude Opus 4.7 ahead. Benchmarks don't capture everything, so the best test is running your own prompts through both.
Can I use GPT-5.5 and Claude Opus 4.7 at the same time?
Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see GPT-5.5 and Claude Opus 4.7 answer side by side and keep the better response.
Why choose? Ask both.
Send one prompt to GPT-5.5 and Claude Opus 4.7 at the same time. Compare the answers side by side and keep the best one.