diff --git a/README.md b/README.md
index 1176187..cce425f 100644
--- a/README.md
+++ b/README.md
@@ -39,6 +39,38 @@ Contributions to the collection are very welcome. For this, please create a new
 | [Zhao_QuantBiol2020](Benchmark-Models/Zhao_QuantBiol2020/)                                   |            7 |                     28 |        0 |                  0 |                   0 |             82 |             1 | normal                  |         5 | [\[1\]](http://identifiers.org/pubmed/32219006)                                                                                                                           | [\[1\]](https://sbml4humans.de/model_url?url=https://raw.githubusercontent.com/Benchmarking-Initiative/Benchmark-Models-PEtab/master/Benchmark-Models/Zhao_QuantBiol2020/SBML_Zhao_QuantBiol2020.xml)                                    |
 | [Zheng_PNAS2012](Benchmark-Models/Zheng_PNAS2012/)                                           |            1 |                     46 |        0 |                  1 |                   0 |             60 |            15 | normal                  |        15 | [\[1\]](http://identifiers.org/doi/10.1073/pnas.1201240109)                                                                                                               | [\[1\]](https://sbml4humans.de/model_url?url=https://raw.githubusercontent.com/Benchmarking-Initiative/Benchmark-Models-PEtab/master/Benchmark-Models/Zheng_PNAS2012/model_Zheng_PNAS2012.xml)                                           |
 
+## Optimizer efficiencies for PEtab problems
+# Optimizer efficiency for benchmark models
+|Model name|Optimizer|Overall efficiency|Number of starts|
+|:---| :---:| ---:|---:|
+|Alkan_SciSignal2018|L-BFGS-B|0.5873002343726723|250
+|Bachmann_MSB2011|cg|0.8535095423511391|250
+|Beer_MolBioSystems2014|nlopt_11|0.3021393820412641|250
+|Bertozzi_PNAS2020|nlopt_42|0.0625368965225103|250
+|Blasi_CellSystems2016|nlopt_42|0.062619053603697|250
+|Boehm_JProteomeRes2014|nlopt_42|0.0625503158813442|250
+|Borghans_BiophysChem1997|nlopt_42|0.0625090423025281|250
+|Brannmark_JBC2010|Nelder-Mead|0.0300288309625841|250
+|Bruno_JExpBot2016|nlopt_42|0.0624973327924617|250
+|Crauste_CellSystems2017|nlopt_42|0.0625128653808899|250
+|Elowitz_Nature2000|nlopt_42|0.06251683093855|250
+|Fiedler_BMC2016|nlopt_42|0.0625210244076697|250
+|Fujita_SciSignal2010|newton-cg|0.2861550080202327|250
+|Giordano_Nature2020|Nelder-Mead|0.0782034592682471|250
+|Isensee_JCB2018|COBYLA|0.648030745923714|250
+|Lucarelli_CellSystems2018|tnc|0.2908116422868182|250
+|Okuonghae_ChaosSolitonsFractals2020|nlopt_42|0.0624754021054171|250
+|Oliveira_NatCommun2021|L-BFGS-B|0.0125610504744164|250
+|Perelson_Science1996|nlopt_42|0.062476295984509|250
+|Rahman_MBS2016|SLSQP|0.0361244345719155|250
+|Raimundez_PCB2020|fides|0.3226217261103182|250
+|SalazarCavazos_MBoC2020|SLSQP|0.3506103769454492|250
+|Schwen_PONE2014|newton-cg|0.1201887849471576|250
+|Sneyd_PNAS2002|SLSQP|0.1393394787410767|250
+|Weber_BMC2015|Nelder-Mead|0.0771565221791643|250
+|Zhao_QuantBiol2020|Nelder-Mead|0.0357648294805615|250
+|Zheng_PNAS2012|Nelder-Mead|0.0757800686116193|250
+
 ## License
 
 Any original content in this repository may be used under the terms of the [BSD-3-Clause license](LICENSE).