Claude Sonnet 4.6
Anthropic released 2026-02-17 proprietary
GPT-5.6 Sol is both better and cheaper.
It scores +12.5 higher and costs 33% less ($4.00/M against $6.00/M) on this workload — and it does everything this model does.
GLM 5.3 is cheaper still (64% less) but drops no image, file input.
The same model via batch is 50% cheaper ($3.00/M) — same weights, different latency.
Every price dimension
| Input | $3.00/M |
|---|---|
| Output | $15.00/M |
| Cached input | $0.300/M |
| Cache write | $3.75/M |
| Cache write 1h | $6.00/M |
| Web search | $0.01/call |
| Batch discount | 50% |
Independent scores
| Intelligence | 48.4 |
|---|---|
| Coding | 63 |
| Agentic | 42.1 |
| LMArena Elo | 1457.6default |
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
- mobileapps #4of 56 1262
- godotgamedev #7of 43 1226
- agenticgamedev #9of 34 1187
- website #12of 151 1305
- dataviz #12of 142 1301
- asciiart #12of 83 1261
- androidnative #12of 54 1222
- fullstack #13of 59 1246
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 |
Sonnet 4.6 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work. It excels at iterative development, complex codebase navigation, end-to-end project management with...