Anthropic's current Opus (June 2026), building on 4.7 with broad benchmark gains and more efficient tool calling. $5/$25 per Mtok, full 1M-token context; cheaper fast mode ($10/$50) than earlier Opus.
Key specs
| Type | API (hosted) |
|---|
| Parameters | — |
|---|
| Architecture | — |
|---|
| Context window | 1000K tokens |
|---|
| Knowledge cutoff | — |
|---|
| Modalities | text, image |
|---|
| Recommended backends | — |
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| Minimum viable rig | — |
|---|
Benchmark scores
| GPQA Diamond | — |
|---|
| SWE-bench Verified | — |
|---|
| AIME | — |
|---|
| MMLU-Pro | — |
|---|
| BFCL v3 (tool use) | — |
|---|
| Composite score | — |
|---|
| Community rating | 5.0★ (1 reviews, 1 net votes) |
|---|
API pricing (per 1M tokens)
| Provider | Input | Output | Free tier |
|---|
| Anthropic | $5 | $25 | No |