Type: Bug
Description:
While using GitHub Copilot Chat in VS Code, the chat panel shows the error "Language model unavailable" when sending a prompt. The selected model is Claude Sonnet 4.6 – High.
Steps to reproduce:
Open Copilot Chat in VS Code
Send any prompt
Error appears
Expected behavior:
Copilot should respond with the model output.
Extension version: 0.43.0
VS Code version: Code 1.115.0 (41dd792, 2026-04-07T22:04:57Z)
OS version: Windows_NT x64 10.0.26100
Modes:
Remote OS version: Linux x64 5.4.0-212-generic
Logs
Debug: [Power] CPU speed limit changed: 24% (throttled)
Info: Fetched model metadata in 832ms d5431d41-e493-434d-bac5-38f71cde5cdc
Error: Error: Failed to fetch models (d5431d41-e493-434d-bac5-38f71cde5cdc): Copilot Pro trials have been temporarily paused. Please upgrade your account or revert to Copilot Free.
at _S._fetchModels (c:\Users\aasurend\.vscode\extensions\github.copilot-chat-0.43.0\dist\extension.js:6667:4889)
at process.processTicksAndRejections (node:internal/process/task_queues:103:5)
at async _S.getAllChatModels (c:\Users\aasurend\.vscode\extensions\github.copilot-chat-0.43.0\dist\extension.js:6667:2254)
at async e$.getAllChatEndpoints (c:\Users\aasurend\.vscode\extensions\github.copilot-chat-0.43.0\dist\extension.js:6667:14851)
at async tne._provideLanguageModelChatInfo (c:\Users\aasurend\.vscode\extensions\github.copilot-chat-0.43.0\dist\extension.js:1685:4565)
at async wd.$provideLanguageModelChatInfo (file:///c:/Users/aasurend/AppData/Local/Programs/Microsoft%20VS%20Code/41dd792b5e/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:503:34041): Failed to fetch models (d5431d41-e493-434d-bac5-38f71cde5cdc)
Info: Fetched model metadata in 284ms f37d4282-fa93-47d8-97e4-25a86d88047e
Error: Error: Failed to fetch models (f37d4282-fa93-47d8-97e4-25a86d88047e): Copilot Pro trials have been temporarily paused. Please upgrade your account or revert to Copilot Free.
at _S._fetchModels (c:\Users\aasurend\.vscode\extensions\github.copilot-chat-0.43.0\dist\extension.js:6667:4889)
at process.processTicksAndRejections (node:internal/process/task_queues:103:5)
at async _S.getAllChatModels (c:\Users\aasurend\.vscode\extensions\github.copilot-chat-0.43.0\dist\extension.js:6667:2254)
at async e$.getAllChatEndpoints (c:\Users\aasurend\.vscode\extensions\github.copilot-chat-0.43.0\dist\extension.js:6667:14851)
at async tne._provideLanguageModelChatInfo (c:\Users\aasurend\.vscode\extensions\github.copilot-chat-0.43.0\dist\extension.js:1685:4565)
at async wd.$provideLanguageModelChatInfo (file:///c:/Users/aasurend/AppData/Local/Programs/Microsoft%20VS%20Code/41dd792b5e/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:503:34041): Failed to fetch models (f37d4282-fa93-47d8-97e4-25a86d88047e)
Debug: [Power] CPU speed limit changed: 23% (throttled)
Debug: [Power] CPU speed limit changed: 22% (throttled)
Debug: [Power] CPU speed limit changed: 23% (throttled)
Debug: [Power] CPU speed limit changed: 22% (throttled)
Debug: Related Information: Index not loaded yet triggering background calculation, returning 1ms
Debug: Related Information: Index not loaded yet triggering background calculation, returning 0ms
Debug: Related Information: Index not loaded yet triggering background calculation, returning 0ms
Debug: Related Information: Index not loaded yet triggering background calculation, returning 0ms
Debug: Related Information: Index not loaded yet triggering background calculation, returning 0ms
Debug: Related Information: Index not loaded yet triggering background calculation, returning 0ms
Debug: Related Information: Index not loaded yet triggering background calculation, returning 0ms
Debug: Related Information: Index not loaded yet triggering background calculation, returning 0ms
Debug: Embeddings for commandEmbeddings calculated in 4600ms
Debug: [Power] CPU speed limit changed: 23% (throttled)
Debug: [Power] CPU speed limit changed: 24% (throttled)
Debug: [Power] CPU speed limit changed: 23% (throttled)
Debug: [Power] CPU speed limit changed: 22% (throttled)
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: false.
Debug: [Power] CPU speed limit changed: 23% (throttled)
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: true.
Debug: [Power] CPU speed limit changed: 22% (throttled)
Debug: copilotCloudSessionsProvider#provideChatSessionItems: repoIds=[], isAgentSessionsWorkspace=false
Debug: copilotCloudSessionsProvider#provideChatSessionItems: not a GitHub repo, returning empty
Debug: [CopilotCLI] Found 0 JSONL sessions and 0 legacy sessions
Debug: [Power] CPU speed limit changed: 23% (throttled)
Trace: RemoteEmbeddingsComputer::computeEmbeddings started
Trace: RemoteEmbeddingsComputer::computeEmbeddings success. Elapsed 442.71609999999055
Debug: Related Information: Remote similarly request took 443ms
Debug: Related Information: Successfully Calculated, returning 445ms
Debug: [Power] CPU speed limit changed: 22% (throttled)
Trace: RemoteEmbeddingsComputer::computeEmbeddings started
Trace: RemoteEmbeddingsComputer::computeEmbeddings success. Elapsed 306.3325999999943
Debug: Related Information: Remote similarly request took 307ms
Debug: Related Information: Successfully Calculated, returning 309ms
Trace: RemoteEmbeddingsComputer::computeEmbeddings started
Trace: RemoteEmbeddingsComputer::computeEmbeddings success. Elapsed 321.71239999998943
Debug: Related Information: Remote similarly request took 322ms
Debug: Related Information: Successfully Calculated, returning 323ms
Trace: RemoteEmbeddingsComputer::computeEmbeddings started
Trace: RemoteEmbeddingsComputer::computeEmbeddings success. Elapsed 293.770600000018
Debug: Related Information: Remote similarly request took 294ms
Debug: Related Information: Successfully Calculated, returning 296ms
Debug: [Power] CPU speed limit changed: 23% (throttled)
Debug: [Power] CPU speed limit changed: 24% (throttled)
Debug: [Power] CPU speed limit changed: 23% (throttled)
Request IDs
System Info
| Item |
Value |
| CPUs |
Intel(R) Core(TM) Ultra 5 125U (14 x 2688) |
| GPU Status |
2d_canvas: enabled
GPU0: VENDOR= 0x8086, DEVICE=0x7d45 [Intel(R) Graphics], DRIVER_VENDOR=Intel, DRIVER_VERSION=32.0.101.8508 ACTIVE
GPU1: 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) |
15.47GB (2.02GB free) |
| Process Argv |
--folder-uri vscode-remote://ssh-remote%2B172.19.104.12/data/aadharsh/airflow_3.1.3/dags/techpubs --crash-reporter-id 7e763158-8de5-4b8b-984b-b82773f4874d |
| Screen Reader |
no |
| VM |
0% |
| Item |
Value |
| Remote |
SSH: 172.19.104.12 |
| OS |
Linux x64 5.4.0-212-generic |
| CPUs |
Intel(R) Xeon(R) Silver 4314 CPU @ 2.40GHz (64 x 846) |
| Memory (System) |
503.54GB (438.35GB free) |
| VM |
0% |
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Type: Bug
Description:
While using GitHub Copilot Chat in VS Code, the chat panel shows the error "Language model unavailable" when sending a prompt. The selected model is Claude Sonnet 4.6 – High.
Steps to reproduce:
Open Copilot Chat in VS Code
Send any prompt
Error appears
Expected behavior:
Copilot should respond with the model output.
Extension version: 0.43.0
VS Code version: Code 1.115.0 (41dd792, 2026-04-07T22:04:57Z)
OS version: Windows_NT x64 10.0.26100
Modes:
Remote OS version: Linux x64 5.4.0-212-generic
Logs
Request IDs
System Info
GPU0: VENDOR= 0x8086, DEVICE=0x7d45 [Intel(R) Graphics], DRIVER_VENDOR=Intel, DRIVER_VERSION=32.0.101.8508 ACTIVE
GPU1: 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
A/B Experiments