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Gemini 4 Argon1526Claude Opus 5.51516Claude Fable 5.11513Claude Opus 51508Claude Opus 4.61502▲4Muse Wonder1501Gemini 3.8 Flash1498MiMo-V2.6-Pro1491Muse Spark 1.31491Claude Fable 51491▼2Claude Opus 4.71490▲6Gemini 3.7 Flash1490Qwen3.8-Max1484▲3Gemini 3.5 Flash1482▼1Muse Spark 1.21482▼8Gemini 3.1 Pro Preview1480▲0Gemini 3.6 Flash1480▲0Gemini 3 Pro1480Muse Spark 1.11478▼2Qwen3.7-Max-Preview1475▲1Kimi K31475▲2Muse Spark1474▲1GLM-5.31474Claude Sonnet 5.51473GLM-5.3-Flash1472▲1GPT-5.51472▲6Qwen3.5-Max-Preview1470▼1GLM-5.21470▲6GPT-5.41469▲17ERNIE 5.11468▼0Gemini 3 Flash1466▼1DeepSeek-V4.1-Flash-202609101464Gemini 4 Argon1526Claude Opus 5.51516Claude Fable 5.11513Claude Opus 51508Claude Opus 4.61502▲4Muse Wonder1501Gemini 3.8 Flash1498MiMo-V2.6-Pro1491Muse Spark 1.31491Claude Fable 51491▼2Claude Opus 4.71490▲6Gemini 3.7 Flash1490Qwen3.8-Max1484▲3Gemini 3.5 Flash1482▼1Muse Spark 1.21482▼8Gemini 3.1 Pro Preview1480▲0Gemini 3.6 Flash1480▲0Gemini 3 Pro1480Muse Spark 1.11478▼2Qwen3.7-Max-Preview1475▲1Kimi K31475▲2Muse Spark1474▲1GLM-5.31474Claude Sonnet 5.51473GLM-5.3-Flash1472▲1GPT-5.51472▲6Qwen3.5-Max-Preview1470▼1GLM-5.21470▲6GPT-5.41469▲17ERNIE 5.11468▼0Gemini 3 Flash1466▼1DeepSeek-V4.1-Flash-202609101464
MiMo-V2.5-Pro1464▼1GLM-5.11463▲0Claude Opus 4.81461▲8Claude Sonnet 4.61458▼1Gemini 2.5 Pro1458GPT-5.6 Sol1457Kimi K2.61455▲0Qwen3.7-Plus1455▲0MiMo-V2.6-Flash1452DeepSeek-V4-Pro1451▲1Claude Opus 4.51451▲0Grok 4.20 Beta1451Grok 4.20 Multi-Agent Beta1451▲1amazon-nova-experimental-chat1449Dola Seed 2.0 Pro1448▲1GPT-5.6 Terra1448Grok 4.51448▼2Qwen3.6-Max-Preview1447▲1GLM-51446▼0Kimi K2.51445NVIDIA-Nemotron-3-Ultra-550B-A55B1445ERNIE 5.01445▲0Grok 4.20 Beta 11445▲0GPT-6.1 Sol1444Gemma 4 31B1443▲1GPT-5.11443▲20Claude Sonnet 51442GPT-6 Astra1442IInkling1442▲2Step 5 Preview1442GLM-4.61440▼0Qwen3.8-27B1440▲1MiMo-V2.5-Pro1464▼1GLM-5.11463▲0Claude Opus 4.81461▲8Claude Sonnet 4.61458▼1Gemini 2.5 Pro1458GPT-5.6 Sol1457Kimi K2.61455▲0Qwen3.7-Plus1455▲0MiMo-V2.6-Flash1452DeepSeek-V4-Pro1451▲1Claude Opus 4.51451▲0Grok 4.20 Beta1451Grok 4.20 Multi-Agent Beta1451▲1amazon-nova-experimental-chat1449Dola Seed 2.0 Pro1448▲1GPT-5.6 Terra1448Grok 4.51448▼2Qwen3.6-Max-Preview1447▲1GLM-51446▼0Kimi K2.51445NVIDIA-Nemotron-3-Ultra-550B-A55B1445ERNIE 5.01445▲0Grok 4.20 Beta 11445▲0GPT-6.1 Sol1444Gemma 4 31B1443▲1GPT-5.11443▲20Claude Sonnet 51442GPT-6 Astra1442IInkling1442▲2Step 5 Preview1442GLM-4.61440▼0Qwen3.8-27B1440▲1

Independent

SWE-1.6 Fast

SWE-1.6 Fast is a proprietary model. Its best result is #100 of 115 on Vibe Code Bench with 7.22%.

Developer
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Released
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Context window
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Price in / out, per 1M tokens
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Weights
Proprietary
Inputs
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Reasoning
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Tool use
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Benchmarks

BenchmarkScore barAccuracyRankCost / test
Vibe Code BenchCoding7.22%100 / 115N/A

Vals AI, as of Oct 24, 2026.

Compare SWE-1.6 Fast

Questions

Is SWE-1.6 Fast open source?

No. SWE-1.6 Fast is proprietary and served through its provider’s API.

Sources

Every number on this page comes from these sources; models without a published number show none. Download the data. Cite as “Nexus Explorer, nexus.inc/models”.