Claude Opus 4.5
Released November 2025 between Opus 4.1 and the 4.6 generation, with major improvements in coding and workplace tasks.
Key Specifications
- Context window
- 200K tokens
- Max output
- 64K tokens
- Knowledge cutoff
- web search available
- Released
- Inputs
- Text, image
- Capabilities Show details
- Reasoning Thinks before it answers, always on or as a switchable mode. Function calling Connect to external tools, APIs, and systems. Structured output Return responses in structured formats like JSON. Web search Search the web for up-to-date information. Code execution Write and execute code in a sandboxed environment. File upload Process uploaded documents, spreadsheets, and other files.
Hosted API pricing
| Provider | Input /1M tokens | Output /1M tokens | Cached input /1M | Cost at 10M in + 2M out | |
|---|---|---|---|---|---|
|
Anthropic
Creator
|
$5.00 | $25.00 | $0.50 | $100.00 | View |
DigitalOcean
|
$5.00 | $25.00 | $0.50 | $100.00 | View |
Heads up: Base-tier, on-demand rates per 1M tokens; cached, batch and long-context tiers excluded. A provider may serve a shorter context or a quantized build than the creator's release. Verify before provisioning. More on how we price.
Similarly priced models
The models nearest Claude Opus 4.5 by blended rate, each at its own cheapest provider.
| Model | Blended /1M | Input /1M | Output /1M | Context | Cutoff | vs Claude Opus 4.5 |
|---|---|---|---|---|---|---|
GPT-5.2
OpenAI
|
$3.7917 | $1.75 | $14.00 | 400K | Aug 2025 | −54% |
|
GPT-5.3-Codex
OpenAI
|
$3.7917 | $1.75 | $14.00 | 400K | Aug 2025 | −54% |
|
GPT-5.4
OpenAI
|
$4.5833 | $2.50 | $15.00 | 1M | Aug 2025 | −45% |
|
Claude Sonnet 4.5
Anthropic
|
$5.00 | $3.00 | $15.00 | 200K | Jan 2025 | −40% |
|
Claude Sonnet 4.6
Anthropic
|
$5.00 | $3.00 | $15.00 | 1M | Aug 2025 | −40% |
|
Claude Opus 4.5
This model
Anthropic
|
$8.3333 | $5.00 | $25.00 | 200K | May 2025 | |
|
Claude Opus 4.6
Anthropic
|
$8.3333 | $5.00 | $25.00 | 1M | May 2025 | 0% |
|
Claude Opus 4.7
Anthropic
|
$8.3333 | $5.00 | $25.00 | 1M | Jan 2026 | 0% |
|
Claude Opus 4.8
Anthropic
|
$8.3333 | $5.00 | $25.00 | 1M | Jan 2026 | 0% |
|
Claude Opus 5
Anthropic
|
$8.3333 | $5.00 | $25.00 | 1M | May 2026 | 0% |
|
GPT-5.5
OpenAI
|
$9.1667 | $5.00 | $30.00 | 1M | Dec 2025 | +10% |
Prices are USD per 1M tokens at each model's cheapest listed provider. Blended is the cost of 10M input plus 2M output tokens, spread over the 12M.
Frequently Asked Questions
What is Claude Opus 4.5 good for?
Coding and workplace tasks, taking text, images and PDFs. It is priced at Anthropic's Opus tier, the same as the later Opus models.
When is Claude Opus 4.5 not a good fit?
Long inputs and long single answers, where Opus 4.6 and later take much more of both at the same price and know more recent events. No audio or video input, and closed weights, so no self-hosting.
What is the cheapest way to run Claude Opus 4.5?
The cheapest hosted rate is $5.00 / $25.00 per 1M tokens via Anthropic.
How does Claude Opus 4.5 compare with Claude Opus 4.6?
Anthropic says Claude Opus 4.6 plans more carefully than Claude Opus 4.5, sustains agent tasks for longer, and is better at reviewing and debugging its own code. It adds adaptive thinking, more effort levels and automatic context compaction. Same price and text and image input. Claude Opus 4.5 came out 3 months earlier and has a smaller context (200K against 1M tokens) and a smaller max output (64K against 128K tokens).
Can I self-host Claude Opus 4.5?
No. Anthropic does not publish the weights; Claude Opus 4.5 is available only through hosted APIs.
More from Anthropic
| Model | Context | Input /1M | Output /1M |
|---|---|---|---|
|
Claude Opus 5
|
1M | $5.00 | $25.00 |
|
Claude Opus 4.7
|
1M | $5.00 | $25.00 |
|
Claude Opus 4.8
|
1M | $5.00 | $25.00 |
|
Claude Opus 4.6
|
1M | $5.00 | $25.00 |
|
Claude Sonnet 4.6
|
1M | $3.00 | $15.00 |
|
Claude Sonnet 4
|
200K | $3.00 | $15.00 |
|
Claude Sonnet 4.5
|
200K | $3.00 | $15.00 |
|
Claude Fable 5.1
|
1M | $10.00 | $50.00 |