[Bug] Anthropic API Error: Context Window Exceeded with Claude 3.5 Opus 1M Token Input
Resolved 💬 3 comments Opened Apr 20, 2026 by dragosbas Closed Apr 23, 2026
Bug Description
system chrashed while implementing phase of refactoring plan, using opus 4-6 [1M]. in claude code 1.114
Environment Info
- Platform: win32
- Terminal: pycharm
- Version: 2.1.114
- Feedback ID: 85bd33c6-1c74-4eb7-aa85-7afc2e604019
Errors
["console":"Bash(cd C:/Users/SuperD/Documents/GitHub/DChat/DChat-Frontend && npm test 2>&1 | head -80)
> dchat-frontend@0.1 test
> vitest run
RUN v4.1.4 C:/Users/.../Documents/.../.../projectName
fatal error: runtime: cannot allocate memory
runtime stack:
runtime.throw({0xa86996?, 0x1cfb4fd0c00?})
runtime/panic.go:1073 +0x4d fp=0x8c2afff0e8 sp=0x8c2afff0b8 pc=0x4cf42d
runtime.persistentalloc1(0x3fc0, 0x0?, 0xe8bbc0)
runtime/malloc.go:1609 +0x24d fp=0x8c2afff138 sp=0x8c2afff0e8 pc=0x46e44d
runtime.persistentalloc.func1()
runtime/malloc.go:1562 +0x28 fp=0x8c2afff168 sp=0x8c2afff138 pc=0x46e1e8
runtime.persistentalloc(0xe587e0?, 0x2030001?, 0x0?)
runtime/malloc.go:1561 +0x4a fp=0x8c2afff1b0 sp=0x8c2afff168 pc=0x46e16a
runtime.(*fixalloc).alloc(0xe5f1a0)
runtime/mfixalloc.go:90 +0x77 fp=0x8c2afff1e8 sp=0x8c2afff1b0 pc=0x4776b7
runtime.(*mheap).allocMSpanLocked(0xe48720)
runtime/mheap.go:1117 +0x9f fp=0x8c2afff218 sp=0x8c2afff1e8 pc=0x486d3f
runtime.(*mheap).allocSpan(0xe48720, 0x1, 0x0, 0x4c)
runtime/mheap.go:1258 +0x21e fp=0x8c2afff2c0 sp=0x8c2afff218 pc=0x486fbe
runtime.(*mheap).alloc.func1()
runtime/mheap.go:962 +0x5c fp=0x8c2afff308 sp=0x8c2afff2c0 pc=0x4869dc
runtime.(*mheap).alloc(0x0?, 0x0?, 0x3?)
runtime/mheap.go:956 +0x5b fp=0x8c2afff350 sp=0x8c2afff308 pc=0x48693b
runtime.(*mcentral).grow(0x0?)
runtime/mcentral.go:254 +0x52 fp=0x8c2afff390 sp=0x8c2afff350 pc=0x474272
runtime.(*mcentral).cacheSpan(0xe5c4a0)
runtime/mcentral.go:170 +0x405 fp=0x8c2afff408 sp=0x8c2afff390 pc=0x4740e5
runtime.(*mcache).refill(0x1cfb4d017d8, 0x14?)
runtime/mcache.go:182 +0x153 fp=0x8c2afff448 sp=0x8c2afff408 pc=0x473713
runtime.(*mcache).nextFree(0x1cfb4d017d8, 0x4c)
runtime/malloc.go:945 +0x85 fp=0x8c2afff480 sp=0x8c2afff448 pc=0x46dc45
runtime.mallocgc(0x718, 0xa6f9c0, 0x1)
runtime/malloc.go:1161 +0x4cd fp=0x8c2afff520 sp=0x8c2afff480 pc=0x4ca80d
runtime.newobject(0x8c2afff540?)
runtime/malloc.go:1386 +0x25 fp=0x8c2afff548 sp=0x8c2afff520 pc=0x46df05
runtime.allocm(0xc000054008, 0xabf190, 0xa)
runtime/proc.go:2212 +0x91 fp=0x8c2afff5a0 sp=0x8c2afff548 pc=0x49f1b1
runtime.newm(0x6a9c1cb3a4c?, 0xc000054008, 0x8c2afff610?)
runtime/proc.go:2748 +0x35 fp=0x8c2afff5d0 sp=0x8c2afff5a0 pc=0x49fbb5
runtime.startm(0xc000054008?, 0x1, 0x0)
runtime/proc.go:2974 +0x159 fp=0x8c2afff620 sp=0x8c2afff5d0 pc=0x4a0279
runtime.wakep()
runtime/proc.go:3121 +0xec fp=0x8c2afff650 sp=0x8c2afff620 pc=0x4cf6ac
runtime.resetspinning()
runtime/proc.go:3861 +0x3e fp=0x8c2afff670 sp=0x8c2afff650 pc=0x4a277e
runtime.schedule()
runtime/proc.go:4014 +0x10f fp=0x8c2afff6a8 sp=0x8c2afff670 pc=0x4a2c0f
runtime.mstart1()
runtime/proc.go:1841 +0xd7 fp=0x8c2afff6d0 sp=0x8c2afff6a8 pc=0x49e977
runtime.mstart0()
runtime/proc.go:1791 +0x6a fp=0x8c2afff6f8 sp=0x8c2afff6d0 pc=0x49e88a
runtime.mstart()
runtime/asm_amd64.s:395 +0x5 fp=0x8c2afff700 sp=0x8c2afff6f8 pc=0x4d5565
goroutine 1 gp=0xc000070000 m=4 mp=0xc00008e008 [syscall]:
runtime.cgocall(0x4d8e00, 0xc00008e330)
runtime/cgocall.go:167 +0x3e fp=0xc00018bab0 sp=0xc00018ba48 pc=0x4c9a7e
runtime.syscall_syscalln(0xc00008e008?, 0xc0005355c0?, {0xc00018baf8?, 0xc00018bb20?, 0x4a4e7f?})
runtime/syscall_windows.go:521 +0x4e fp=0xc00018bad0 sp=0xc00018bab0 pc=0x4b738e
syscall.Syscall6(0xc000196360?, 0xe?, 0x7?, 0xc00018bb90?, 0xe0047ff85?, 0xe87600?, 0x400000?, 0x4728ae?)
runtime/syscall_windows.go:463 +0x38 fp=0xc00018bb38 sp=0xc00018bad0 pc=0x4d32f8
syscall.readFile(0x370, {0xc0001ae000?, 0x4000, 0xc000070000?}, 0xc00018bc68?, 0x800000?)
syscall/zsyscall_windows.go:1019 +0x8b fp=0xc00018bba8 sp=0xc00018bb38 pc=0x51202b
syscall.ReadFile(...)
syscall/syscall_windows.go:443
syscall.Read(0xc00013c008?, {0xc0001ae000?, 0x10?, 0x4ca9fd?})
syscall/syscall_windows.go:422 +0x2d fp=0xc00018bc00 sp=0xc00018bba8 pc=0x50e74d
internal/poll.(*FD).Read(0xc00013c008, {0xc0001ae000, 0x4000, 0x4000})
internal/poll/fd_windows.go:424 +0x1b9 fp=0xc00018bca8 sp=0xc00018bc00 pc=0x52ca39
os.(*File).read(...)
os/file_posix.go:29
os.(*File).Read(0xc0001140b0, {0xc0001ae000?, 0x0?, 0x9?})
os/file.go:124 +0x52 fp=0xc00018bce8 sp=0xc00018bca8 pc=0x531592
main.runService(0x1)
github.com/evanw/esbuild/cmd/esbuild/service.go:134 +0x37d fp=0xc00018be10 sp=0xc00018bce8 pc=0x99101d"]This issue has 3 comments on GitHub. Read the full discussion on GitHub ↗