Copilot CLI: Support Reasoning Effort

[armaansood]

Type: Bug

Reasoning not shown

VS Code version: Code 1.112.0 (07ff9d6, 2026-03-17T18:09:23Z)
OS version: Windows_NT x64 10.0.26200
Modes:

System Info

Item	Value
CPUs	AMD Ryzen Threadripper PRO 7975WX 32-Cores (64 x 3994)
GPU Status	2d_canvas: enabled GPU0: VENDOR= 0x10de, DEVICE=0x25b0 [NVIDIA RTX A1000], DRIVER_VENDOR=NVIDIA, DRIVER_VERSION=32.0.15.9579 ACTIVE GPU1: VENDOR= 0x10de, DEVICE=0x25b0 [NVIDIA RTX A1000], DRIVER_VERSION=32.0.15.9579 GPU2: VENDOR= 0x10de, DEVICE=0x25b0 [NVIDIA RTX A1000], DRIVER_VERSION=32.0.15.9579 GPU3: VENDOR= 0x1414, DEVICE=0x008c [Microsoft Basic Render Driver], DRIVER_VERSION=10.0.26100.7309 Machine model name: Machine model version: direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: disabled_off trees_in_viz: disabled_off video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	undefined
Memory (System)	127.39GB (54.50GB free)
Process Argv	C:\Users\armaans\.copilot\session-state\0953fc1a-4d3a-4ea0-a010-272b6819a2bc\research\can-you-help-me-write-up-the-patent-for-pitr-with-.md --crash-reporter-id 837138d-32e3-4031-806f-4294406d74b9
Screen Reader	no
VM	0%

Extensions (11)

Extension	Author (truncated)	Version
markdown-mermaid	bie	1.32.0
editless	cir	0.1.3
vulnerability-extension	dev	1.2026.313003
copilot-chat	Git	0.40.1
vscode-dotnet-runtime	ms-	3.0.0
cmake-tools	ms-	1.22.28
cpp-devtools	ms-	0.4.6
cpptools	ms-	1.31.3
cpptools-extension-pack	ms-	1.5.1
vscode-yaml	red	1.21.0
markdown-preview-enhanced	shd	0.8.22

(1 theme extensions excluded)

A/B Experiments

vsliv368:30146709
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
pythonrdcb7:31342333
6518g693:31463988
aj953862:31281341
6abeh943:31336334
envsactivate1:31464700
cloudbuttont:31379625
aihoversummaries_t:31469308
3efgi100_wstrepl:31403338
use-responses-api:31390855
anonusage:31403420
je187915:31401257
ec5jj548:31422691
cmp-cht-diffpatch-lysithea-0002:31481935
metis_rerank_treatment1:31422731
cp_cls_t_966_ss:31454198
4je02754:31466945
find_all_ref_in_bg_t:31469306
8hhj4413:31478653
ge8j1254_inline_auto_hint_haiku:31431912
00h15499_gpt_53_codex:31464539
cp_cls_c_1081:31454833
ia-use-proxy-models-svc:31452481
e9c30283:31461165
test_treatment2:31471001
ts_provider_enabled:31458190
control_6dc23131:31467998
idci7584:31464702
nes-ftch-new:31482522
showingstats:31481873
534a6447:31478749
nes-extended-on:31455476
chat:31457767
8hig5102:31480529
8a2c4887_5_3_codex_prompt:31475326
bg_compact_c:31481651
c-off:31481340
cpptoolsoff-v2:31475362
noaffordance1:31474146
db0gd219:31481871
23c7c724:31481452
ddid_t:31478206
nes-cj-ctx5k:31479279
getcmakediagnosticson:31481766
nes-perm-reb-0:31481661

[vs-code-engineering]

Thanks for creating this issue! We figured it's missing some basic information or in some other way doesn't follow our issue reporting guidelines. Please take the time to review these and update the issue.

For Copilot Issues, be sure to visit our Copilot-specific guidelines page for details on the necessary information.

Happy Coding!

[armaansood]

Added info