Claude Opus 4.8
Anthropic released 2026-05-27 proprietary
GPT-5.6 Sol is both better and cheaper.
It scores +3.6 higher and costs 60% less ($4.00/M against $10.00/M) on this workload — and it does everything this model does.
Grok 4.6 is cheaper still (70% less) but drops 1.0M → 500K context.
The same model via batch is 50% cheaper ($5.00/M) — same weights, different latency.
Every price dimension
| Input | $5.00/M |
|---|---|
| Output | $25.00/M |
| Cached input | $0.500/M |
| Cache write | $6.25/M |
| Cache write 1h | $10.00/M |
| Web search | $0.01/call |
| Batch discount | 50% |
Independent scores
| Intelligence | 57.3 |
|---|---|
| Coding | 74.3 |
| Agentic | 49.4 |
| LMArena Elo | 1460.9high |
Sources are listed separately rather than averaged. Across the 62 models both have scored they correlate at r = 0.806 — close agreement overall, but four models rank very differently between them, and a blended score would hide exactly those.
Best rankings by task
- agenticslides #2of 16 1294
- agenticslides(python-pptx) #2of 16 1310
- pptxslides #2of 14 1306
- python-pptxslides #3of 35 1298
- agenticgamedev #3of 34 1259
- htmlslides #3of 34 1233
- agentichtmlslides #4of 16 1227
- agenticslides(html) #4of 16 1230
Capability
| Context window | 1M |
|---|---|
| Max output | 128K |
| Input modes | text, image, file |
| Tool use | yes |
| Reasoning | optional |
| Open weights | no |
Provenance
| Price source | openrouter.ai |
|---|---|
| Fetched | 2026-08-24 |
| Quality data | verified |
| Cross-checked | vendor page |
Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family. It supports text, image, and file inputs with text output, with reasoning support and a 1M-token...