GPT-5.4
OpenAI released 2026-03-05 proprietary
GPT-5.6 Sol is both better and cheaper.
It scores +7.8 higher and costs 29% less ($4.00/M against $5.63/M) on this workload — and it does everything this model does.
GLM 5.3 is cheaper still (62% less) but drops 1.1M → 1.0M context, no image, file input.
The same model via batch is 50% cheaper ($2.81/M) — same weights, different latency.
Every price dimension
| Input | $2.50/M |
|---|---|
| Output | $15.00/M |
| Cached input | $0.250/M |
| Web search | $0.01/call |
| Batch discount | 50% |
Past 272,000 tokens the price changes. Input goes to $5.00/M (2×) and output to $22.50/M. The headline rate does not apply to a long-context workload.
Independent scores
| Intelligence | 53.1 |
|---|---|
| Coding | 71.1 |
| Agentic | 44.2 |
| LMArena Elo | 1469.6high |
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
- asciiart #18of 83 1226
- svg #19of 98 1235
- godotgamedev #22of 43 1135
- gamedev #26of 144 1275
- dataviz #28of 142 1256
- uicomponent #29of 140 1267
Capability
| Context window | 1.1M |
|---|---|
| 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 |
GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for...