High-volume, cost-sensitive work
Choose Claude Opus 5.5
Claude Opus 5.5 costs 47% less on a typical mix of three input tokens for every output token ($8.00 against $15.00 per million tokens).
Claude Opus 5.5 vs GPT-4 Turbo: price, context and capabilities
Choose Claude Opus 5.5 for high-volume, cost-sensitive work, writing and code generation, very long inputs, the latest release and the most recent knowledge; on the other points the two are level or the data is missing.
In short
- Claude Opus 5.5 is 47% cheaper than GPT-4 Turbo at the headline price ($8.00 / 1M tokens vs $15.00 / 1M tokens).
- Claude Opus 5.5 reads more per request: 1M tokens against 128k.
- Claude Opus 5.5 is the newer model (September 2026, against Apr 9, 2024).
- Only Claude Opus 5.5 offers reasoning, prompt caching.
Which should you choose?
Each answer below comes straight from the published prices, specifications and independent benchmark results.
Writing and code generation
Choose Claude Opus 5.5
Claude Opus 5.5 charges $20.00 per million output tokens, against $30.00 for GPT-4 Turbo. Output dominates the bill when answers are long.
Very long inputs
Choose Claude Opus 5.5
Claude Opus 5.5 reads up to 1M tokens per request, against 128k for GPT-4 Turbo.
Latest release
Choose Claude Opus 5.5
Claude Opus 5.5 is the newer release (September 2026, against Apr 9, 2024 for GPT-4 Turbo).
Most recent knowledge
Choose Claude Opus 5.5
Claude Opus 5.5 was trained on data up to June 2026, against December 2023 for GPT-4 Turbo.
Monthly cost at three volumes
| Volume | Claude Opus 5.5 | GPT-4 Turbo | Difference |
|---|---|---|---|
| Prototype: 1M input, 250K output tokens | $9.00 | $17.50 | Claude Opus 5.5, $8.50 less |
| Production: 20M input, 5M output tokens | $180.00 | $350.00 | Claude Opus 5.5, $170.00 less |
| Scale: 500M input, 100M output tokens | $4,000 | $8,000 | Claude Opus 5.5, $4,000 less |
Standard rates, without caching or batch discounts. Volumes are per month.
Specifications side by side
| Claude Opus 5.5 | GPT-4 Turbo | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Category | Language models | Language models |
| Status | Generally available | Deprecated |
| Headline price | $8.00 / 1M tokens | $15.00 / 1M tokens |
| Input | $4.00 / 1M tokens | $10.00 / 1M tokens |
| Output | $20.00 / 1M tokens | $30.00 / 1M tokens |
| Cached input | $0.20 / 1M tokens | No data |
| Context window | 1M | 128k |
| Max output | 128k | 4k |
| Released | September 2026 | Apr 9, 2024 |
| Knowledge cutoff | June 2026 | December 2023 |
| Licence | Proprietary | Proprietary |
| Capabilities | Vision, Reasoning, Tool calling, Structured output, Prompt caching, Batch API | Vision, Tool calling, Structured output, Batch API |
| API model id | claude-opus-5-5 | gpt-4-turbo |
Benchmarks side by side
Leader in bold.
| Benchmark | Claude Opus 5.5 | GPT-4 Turbo |
|---|---|---|
| Humanity's Last Exam | 61.4% | 3.1% |
| Intelligence Index | 57.6 | No data |
| SciCode | 66.9% | No data |
| MMMU-Pro (visual reasoning) | 87.7% | No data |
| Long-context reasoning (AA-LCR) | 84.7% | No data |
Independent evaluations by Artificial Analysis, run the same way for every model, at the reasoning setting shown. Percentages unless marked as an index.
Frequently asked questions
Should I choose Claude Opus 5.5 or GPT-4 Turbo?
Choose Claude Opus 5.5 for high-volume, cost-sensitive work, writing and code generation, very long inputs, the latest release and the most recent knowledge; on the other points the two are level or the data is missing.
Which is cheaper, Claude Opus 5.5 or GPT-4 Turbo?
Claude Opus 5.5 is 47% cheaper than GPT-4 Turbo at the headline price ($8.00 / 1M tokens vs $15.00 / 1M tokens).
Which has the larger context window, Claude Opus 5.5 or GPT-4 Turbo?
Claude Opus 5.5 reads more per request: 1M tokens against 128k.
What is the difference between Claude Opus 5.5 and GPT-4 Turbo?
Claude Opus 5.5 is made by Anthropic and GPT-4 Turbo by OpenAI. Claude Opus 5.5 is 47% cheaper than GPT-4 Turbo at the headline price ($8.00 / 1M tokens vs $15.00 / 1M tokens). Claude Opus 5.5 reads more per request: 1M tokens against 128k. Claude Opus 5.5 is the newer model (September 2026, against Apr 9, 2024). Only Claude Opus 5.5 offers reasoning, prompt caching.
How much do Claude Opus 5.5 and GPT-4 Turbo cost per month?
At 20 million input and 5 million output tokens a month, Claude Opus 5.5 costs $180.00 and GPT-4 Turbo costs $350.00, at standard rates.
Which is newer, Claude Opus 5.5 or GPT-4 Turbo?
Claude Opus 5.5 was released on September 2026 and GPT-4 Turbo on Apr 9, 2024.