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Phi-4
Phi-4 is an open-weight model from Microsoft, released Jan 10, 2025. It ranks #316 of 351 on the LMArena text leaderboard with a rating of 1217. It costs $0.07 per million input tokens and $0.14 per million output tokens, with a 16K-token context window.
- Developer
- Microsoft
- Released
- Jan 10, 2025
- Context window
- 16K
- Price in / out, per 1M tokens
- $0.07 / $0.14
- Weights
- Open · MIT
- Inputs
- Text
- Reasoning
- No
- Tool use
- No
- Hugging Face downloads, 30 days
- 364.8K
- Hugging Face likes
- 2.3K
The rating LMArena published at each update since Jan 19, 2025. Ratings move as votes come in and new models join.
LMArena, by category
| Leaderboard | Rating | Rank | Votes |
|---|---|---|---|
| TextLMArena | 1217 | 316 / 351 | 24.1K |
| CodingLMArena | 1231 | 301 / 346 | 3.3K |
| MathLMArena | 1246 | 284 / 339 | 2.8K |
| Creative writingLMArena | 1181 | 318 / 349 | 4.1K |
| Instruction followingLMArena | 1201 | 308 / 351 | 9.2K |
| Hard promptsLMArena | 1219 | 302 / 351 | 5.7K |
| Multi-turnLMArena | 1206 | 312 / 349 | 3.5K |
| Long queriesLMArena | 1217 | 310 / 330 | 2.9K |
| ExpertLMArena | 1203 | 290 / 305 | 1.1K |
| Legal and governmentIndustries | 1241 | 300 / 325 | 1.3K |
| Medicine and healthcareIndustries | 1202 | 302 / 325 | 1K |
| Business and financeIndustries | 1199 | 308 / 344 | 2.4K |
| ChineseLanguages | 1212 | 304 / 328 | 1.5K |
| SpanishLanguages | 1234 | 254 / 249 | 127 |
| GermanLanguages | 1222 | 246 / 261 | 523 |
| FrenchLanguages | 1224 | 254 / 252 | 205 |
| JapaneseLanguages | 1158 | 230 / 236 | 500 |
LMArena, CC BY 4.0, as of Oct 22, 2026. Where a model is rated at several effort levels, its best is shown.
Compare Phi-4
Microsoft
Microsoft Research builds Phi, small language models that punch above their size. Founded 1975, based in Redmond. azure.microsoft.com
Questions
Who makes Phi-4?
Phi-4 is made by Microsoft, founded 1975 and based in Redmond.
How much does Phi-4 cost?
$0.07 per million input tokens and $0.14 per million output tokens, at its provider’s list price.
What is Phi-4’s context window?
16K tokens (16,384).
How does Phi-4 rank?
#316 of 351 on LMArena’s text leaderboard, rated 1217 (95% interval 1212–1221) from 24,126 votes, as of Oct 22, 2026.
Is Phi-4 open source?
Phi-4 has open weights under the MIT license, downloadable from Hugging Face (microsoft/phi-4).