List price
Input / 1M$5.00Output / 1M$25.00Cache read / 1M$0.50Blended$20.000Value index55.8Last move—
models.dev · MIT · retrieved Oct 23, 2026
Anthropic
Claude Opus 4.5 (latest)
Claude Opus 4.5 (latest) is listed by Anthropic at $5 input and $25 output per million tokens. The recorded context window is 200,000 tokens. Release date on file: 2025-11-24. LMArena's text board published 2026-10-20 gives it an overall rating of 1451.0 (rank 50, 72,863 votes). Price source: models.dev (MIT).
- Context19
- Inverse price96
- Arena80
- GPQA—
- Tools100
- Modalities67
Price history
Input and output list price. A missing day stays a gap in the line. The series is not a quality history.
Benchmarks
LMArena is CC-BY-4.0. Epoch scores, including LiveBench where Epoch publishes it, are CC-BY-4.0. A blank cell means this snapshot has no match. Nothing here is estimated.
| Benchmark | Score | Detail | Source |
|---|---|---|---|
| LMArena overall | 1451.0 | rank 50 · 72,863 votes | LMArena leaderboard dataset · CC-BY-4.0 |
| LMArena coding | 1503.5 | rank 19 · 7,787 votes | LMArena leaderboard dataset · CC-BY-4.0 |
| LMArena math | 1462.7 | rank 55 · 2,346 votes | LMArena leaderboard dataset · CC-BY-4.0 |
| GPQA Diamond | — | — | — |
| LiveBench | — | — | — |
| SWE-bench Verified | — | — | — |
| Epoch Capability Index | 150.11 | 147.81–153.01 | Epoch AI Capabilities & benchmarking · CC-BY-4.0 |
Provider prices
The list row is the price used for the value index. Other rows are the same model id on models.dev, plus the LiteLLM catalog price when we have one. A split quote is kept beside the list price.
| Quote | Provider | Input / 1M | Output / 1M | Blended | Source |
|---|---|---|---|---|---|
| List | Anthropic | $5.00 | $25.00 | $20.000 | models.dev · MIT |
| Also listed | Merge Gateway | $5.00 | $25.00 | $20.000 | models.dev · MIT |
| Also listed | Impossibl | $5.00 | $25.00 | $20.000 | models.dev · MIT |
| Also listed | Tempr Gateway | $5.00 | $25.00 | $20.000 | models.dev · MIT |
| LiteLLM | anthropic | $5.00 | $25.00 | $20.000 | LiteLLM model_prices_and_context_window.json · MIT |
Spec
Context200,000Max output64,000Inputtext, image, pdfOutputtextReleased2025-11-24Open weightsNo
Spec fields are from the models.dev row for Anthropic.