Zephyr Chat on SWE-bench Verified: score, rank and what it means
Zephyr Chat scores 49.1 on SWE-bench Verified, placing it #429 of 600 models in the index. The benchmark average is 57.5 and the leader is GPT-5.2 Pro at 81.7.
Score distribution
The chart shows the top 10 models on SWE-bench Verified, with Zephyr Chat highlighted. Longer bars mean higher scores.
Top 10 leaderboard
| # | Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|---|
| 1 | GPT-5.2 Pro | OpenAI | 2000000 | $21.32 | 89.6 |
| 2 | Claude Opus 4.5 Pro | Anthropic | 200000 | $20.98 | 89.1 |
| 3 | GPT-5.2 Max | OpenAI | 1000000 | $21.39 | 89.2 |
| 4 | Claude Sonnet 4.5 Max | Anthropic | 1000000 | $19.90 | 87.2 |
| 5 | GPT-5.2 | OpenAI | 2000000 | $19.71 | 88.0 |
| 6 | GPT-5.1 Pro | OpenAI | 200000 | $19.77 | 87.8 |
| 7 | o4 Max | OpenAI | 2000000 | $19.51 | 86.2 |
| 8 | Claude Sonnet 4.5 Reasoning | Anthropic | 400000 | $19.48 | 87.7 |
| 9 | Claude Opus 4.5 Max | Anthropic | 1000000 | $20.90 | 87.8 |
| 10 | Claude Opus 4.5 Reasoning | Anthropic | 2000000 | $20.91 | 88.2 |
What this score means
On SWE-bench Verified, Zephyr Chat sits at #429 of 600. The leader, GPT-5.2 Pro, scores 81.7, so the gap to the top is 32.6 points. The median model in this index scores 61.0, which puts Zephyr Chat below the midpoint.
Hugging Face models average 37.7 on this benchmark. Zephyr Chat is 11.4 points above that provider line, so it is a stronger result than the average Hugging Face model.
Among open-weight models, the average is 55.5. Zephyr Chat is 6.4 points below that group. This is the more useful comparison if you are shortlisting within the same tier rather than across the whole index.
Read a 49.1 as a relative signal, not an absolute guarantee. Benchmark scores depend on prompt format, evaluation harness and contamination controls. Use this page to narrow the shortlist, then test the model on your own data.
Price context
At $1.49 per million input tokens, Zephyr Chat is below the median input price of $4.00 across the 600 models scored on SWE-bench Verified. The models immediately around it in the ranking are shown below so you can compare score and price together.
| Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|
| GLM-4.6 7B | Zhipu AI | 16384 | $1.52 | 61.8 |
| Hunyuan-Turbo Nano | Tencent | 32768 | $4.65 | 62.7 |
| Embed 4 Reasoning | Cohere | 4096 | $5.50 | 65.3 |
| Mistral Large 3 7B | Mistral AI | 32768 | $1.44 | 61.1 |
| Zephyr Chat | Hugging Face | 4096 | $1.49 | 61.3 |
| Mistral Large 3 8B | Mistral AI | 16384 | $1.62 | 61.6 |
| Auto Mini | OpenRouter | 4096 | $4.24 | 61.6 |
Other benchmarks for Zephyr Chat
| Benchmark | Score | Rank | Percentile | Relative |
|---|---|---|---|---|
| MMLU-Pro | 68.4 | 413 | 31th | |
| GPQA Diamond | 56.7 | 445 | 26th | |
| HumanEval | 65.5 | 436 | 27th | |
| MATH-500 | 61.3 | 451 | 25th | |
| AIME 2025 | 51.8 | 444 | 26th | |
| LiveCodeBench | 51.2 | 438 | 27th | |
| IFEval | 71.8 | 432 | 28th | |
| TruthfulQA | 64.6 | 464 | 23th | |
| HellaSwag | 76.5 | 421 | 30th | |
| MMMU | 56.9 | 472 | 21th | |
| Arena Elo | 1281.0 | 443 | 26th |
FAQ
What score does Zephyr Chat get on SWE-bench Verified?
Zephyr Chat scores 49.1 on SWE-bench Verified in this index. The benchmark average is 57.5 and the top score is 81.7.
How does Zephyr Chat rank on SWE-bench Verified?
It ranks #429 of 600 models, in the 29th percentile. The leader is GPT-5.2 Pro at 81.7.
Is Zephyr Chat good at SWE-bench Verified?
It is below the median for this benchmark, so test it carefully before relying on it for this capability. The result should be read alongside its price and context window.
How is the SWE-bench Verified score calculated?
SWE-bench Verified is a coding benchmark. Scores in this index are modelled estimates on a 0–100 scale (or Elo for Arena), derived from capability tier and benchmark difficulty. They are not official leaderboard results.
What does Zephyr Chat cost?
Zephyr Chat costs $1.49 per million input tokens and $8.02 per million output tokens.