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/model

slash never mined documented JSON

A Claude Code slash command, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.

Switch the AI model and save it as your default for new sessions. For models that support it, use left/right arrows to adjust effort level. With no argument, opens a picker; press s on a row to switch for the current session only. See when Claude Code asks you to confirm the switch. Once you confirm the switch, if Claude Code asks, Claude Code applies the change without waiting for the current response to finish. Before v2.1.242, Claude Code decided from a feature flag it fetched from Anthropic whether to run the command mid-turn or queue it until the turn finished, and always queued it in a session that doesn't fetch feature flags, such as on a third-party provider. Also available in non-interactive mode (-p) with a model argument instead of the picker, where it applies to the current session only and isn't saved as your default; requires Claude Code v2.1.205 or later

Anthropic's own wording. Read off Commands, captured 2026-09-28.

First seen — never in a mined build
Last seen — never in a mined build
Builds0 / 149on this box, as of v2.1.308
Written about v1.0.0 first named in a changelog, 22 May 2025

In the changelogs

93

Releases whose published page names /model.

  1. v2.1.307
    Model-switch messages now explain your organization's usage credits

    Messages about switching models now say whether your organization's usage credits are off, capped or used up, or tell you to run /model

    found in this entry's text

  2. v2.1.304
    /model in a remote session can open a new picker

    In a remote session, /model now opens a new model picker when the session has kept model rows, and falls back to the old picker otherwise

    found in this entry's text, named in this entry

  3. v2.1.304
    /model in cloud sessions keeps its model list and refreshes it

    In a cloud session, the /model picker now keeps the session's list of models and refreshes it, instead of fetching it once each time it opens

    found in this entry's text, named in this entry

  4. v2.1.302
    /model picker can take a preset list and keep your effort choice across picks

    The /model picker can now use a prepared list of options and remembers the chosen effort, saving it only if it differs from the preset

    found in this entry's text, named in this entry

  5. v2.1.301
    Switching models now detects when you've hit your plan's shared usage limit

    If /model hits a five-hour or seven-day usage limit while checking a model, Claude Code now marks that a shared limit was reached

    found in this entry's text, named in this entry

  6. v2.1.299
    Agent view /model opens a picker for model, effort and fast mode

    In the agent view, /model sets the model for new sessions from that window, and with no name it opens a picker

    found in this entry's text, named in this entry

  7. v2.1.299
    FleetView's /model description now says it applies to new sessions only

    In FleetView, /model is now described as setting the model for new sessions from this window, without saving it

    found in this entry's text, named in this entry

  8. v2.1.295
    /model now says when your default model could not be saved

    After switching models, /model now checks whether saving it as your default worked and words its confirmation to match

    found in this entry's text, named in this entry

  9. v2.1.295
    Choosing a model with /model can now be checked or adjusted before it applies

    In interactive mode, /model and its picker can pass your choice through a step that may refuse or change it, and report save failures

    found in this entry's text, named in this entry

  10. v2.1.292
    Saved default model is only replaced when the model family matches

    Claude Code now only overwrites your saved default model when your current model is in the same model family as the one being set

    found in this entry's text

  11. v2.1.292
    Usage-credits consent is now remembered per model

    The consent prompt for models that run only on usage credits is now stored per model, and Fable keeps its existing setting

    found in this entry's text, named in this entry

  12. v2.1.292
    Advisor setup messages now name the model they are about

    The advisor consent message and the /model hint now name the actual model and command instead of always naming Fable

    found in this entry's text, named in this entry

  13. v2.1.290
    Remote Control users can run /effort, /model, /rename and /usage while Claude is working

    Someone connected through Remote Control can now run /effort, /model, /rename and /usage straight away while Claude is mid-reply

    found in this entry's text, named in this entry

  14. v2.1.288
    Permission prompts can explain why auto mode is not skipping them

    New messages explain that an action is allowed but Claude still asks, because auto mode is unavailable, and say why

    found in this entry's text

  15. v2.1.286
    /compact, /clear and /rewind ask to confirm inside an agent view

    Typing /compact, /clear or /rewind while viewing an agent now asks you to confirm running it on the main conversation

    found in this entry's text

  16. v2.1.286
    /model can now refuse a switch or ask you to confirm it

    /model now runs a check first that can block a model switch with a message or ask for extra confirmation, sometimes with a reason

    found in this entry's text, named in this entry

  17. v2.1.285
    /model in a cloud session waits for the session to be ready

    In a cloud session, /model now waits for the cloud session to start before loading models, instead of timing out or falling back

    found in this entry's text, named in this entry

  18. v2.1.284
    The sonnet model name now points to Sonnet 5.5 on the Anthropic API

    Choosing sonnet now selects Sonnet 5.5 instead of Sonnet 5 on the Anthropic API, while Bedrock, Vertex and other providers keep older models

    found in this entry's text

  19. v2.1.284
    /model lists Sonnet 5 as the previous Sonnet version

    The /model picker now includes a Sonnet 5 row, labelled Previous Sonnet version, when that model is available to you

    found in this entry's text, named in this entry

  20. v2.1.284
    Ultracode is now an on/off switch that works with any effort level

    Ultracode is no longer an effort level that forces xhigh; you turn it on or off with /effort ultracode on or off

    found in this entry's text

  21. v2.1.284
    Gateway config checks warn about model lists that would reject every request

    Gateway checks now warn when availableModels is empty or leaves out the default model, both of which get requests refused

    found in this entry's text

  22. v2.1.284
    Switching models with /model no longer treats ultracode effort levels specially

    On /model switches, the effort level is now applied directly, including levels that came from ultracode, and ultracode state is no longer set

    found in this entry's text, named in this entry

  23. v2.1.284
    Sonnet 4.6 is now labelled "Legacy" in the model picker

    The model picker now describes Sonnet 4.6 as "Sonnet 4.6 · Legacy" instead of the previous Sonnet version

    named in this entry

  24. v2.1.283
    Switching to the default model now respects your organization's model rules

    Choosing the default model now checks availableModels and deniedModels and is refused if your organization's managed settings block it

    found in this entry's text, named in this entry

  25. v2.1.283
    Models denied by managed policy are hidden from the /model picker

    When managed policy sets deniedModels, the /model picker now leaves those models out instead of showing the full list

    found in this entry's text, named in this entry

  26. v2.1.282
    Switching to a model that needs credits no longer fails as an invalid model

    When /model gets a "credits required" answer, Claude Code handles it separately instead of reporting the model as invalid

    found in this entry's text, named in this entry

  27. v2.1.282
    /model can switch to claude-fable- models that need credits

    Switching to a claude-fable- model that needs credits goes to a confirmation step instead of being rejected as invalid

    found in this entry's text, named in this entry

  28. v2.1.282
    One model is no longer marked for quick selection

    A model with a 1M-token input limit and 128,000-token output limit lost its quick-select mark in Claude Code's model list

    found in this entry's text

  29. v2.1.281
    /model error messages get codes and wording for hosts without the command

    Failed model switches now return an error code and no longer tell you to run /model where it isn't available

    found in this entry's text, named in this entry

  30. v2.1.281
    /config Model picker no longer passes skipSettingsWrite

    Model pickers no longer pass skipSettingsWrite, and clicking a blank part of a /config row now selects it

    found in this entry's text

  31. v2.1.281
    429 and overload messages drop the /model hint in some non-interactive sessions

    Some non-interactive sessions get high-load errors without the /model hint, and 429 errors report their message more reliably

    found in this entry's text

  32. v2.1.281
    Model-validation failure is marked retryable and only suggests /model when it exists

    The "Couldn't confirm model" error is now marked retryable and suggests /model only when that command is available

    found in this entry's text, named in this entry

  33. v2.1.281
    /model validation: clearer API errors that say the model was not changed, plus a retryable flag

    When /model cannot check a model name, the error is cleaner, says the model was not changed, and marks retryable cases

    found in this entry's text, named in this entry

  34. v2.1.280
    New 'model_consent_fallback' system message for usage-credit model swaps

    New system message explains when Claude Code auto-switches models over usage-credit consent

    found in this entry's text, named in this entry

  35. v2.1.280
    /model default-set now optimistically updates local state before server confirmation

    Setting a default model with /model now updates the local picker before the server confirms

    found in this entry's text, named in this entry

  36. v2.1.280
    Selected model can now be synced to the organization's server-side default

    Claude Code can now push your chosen model to your organization's shared server-side default

    named in this entry

  37. v2.1.274
    Usage-credits 1M-context guidance message reworked with new eligibility checks

    1M-context usage-credits message now varies based on whether /usage-credits is actually available to you

    named in this entry, found in this entry's text

  38. v2.1.274
    Model-switch suggestion text now considers config sources beyond gateway

    Model-unavailable suggestions now weigh more context before recommending /model or --model

    named in this entry, found in this entry's text

  39. v2.1.268
    Stale model-access denials are now automatically re-probed and can self-heal

    Claude Code now re-checks previously denied models with the server instead of caching the denial forever

    found in this entry's text, named in this entry

  40. v2.1.268
    Team shared-budget ('group_pool') hit message

    New message when your team's shared usage budget runs out, with a path to raise it or switch models

    found in this entry's text, named in this entry

  41. v2.1.267
    Per-model "maxEffortLevel" cap now enforced client-side across settings

    maxEffortLevel now combines a global cap with per-model overrides across all settings files and clamps any explicit effort request

    found in this entry's text

  42. v2.1.265
    1M-context alias switching gets structured refusal reasons

    Switching to a 1M-context model now gives a specific reason when it's refused

    found in this entry's text, named in this entry

  43. v2.1.265
    /model 1M-context aliases get explicit availability checks

    Switching to a 1M-context model with /model now gives a specific error explaining exactly why it isn't available

    found in this entry's text, named in this entry

  44. v2.1.265
    /model default-save now confirms the write and reports failure/unconfirmed states

    /model's default-save now waits to confirm the write and reports saved, unconfirmed, or failed instead of assuming success

    found in this entry's text, named in this entry

  45. v2.1.260
    Fable 5.1 advisor feature surfaced with setup prompt

    A new Fable 5.1 advisor model can be enabled by running /model fable.

    found in this entry's text, named in this entry

  46. v2.1.260
    New unrecognized-model telemetry on /model switch

    Switching to an unrecognized model now fires its own telemetry event.

    found in this entry's text

  47. v2.1.260
    Model switch now probes availability before showing the picker

    /model now shows a checking-availability step before displaying model choices.

    found in this entry's text, named in this entry

  48. v2.1.251
    New PreModelSwitch and PostModelSwitch hooks

    New PreModelSwitch and PostModelSwitch hooks let you gate or annotate every model change.

    found in this entry's text

  49. v2.1.251
    /model switches can be blocked or held for confirmation by a hook

    A PreModelSwitch hook can block or hold your /model change for confirmation.

    named in this entry, found in this entry's text

  50. v2.1.251
    Model picker can now set an effort level and ultracode

    Picking a model can now also set effort level and ultracode for the session.

    named in this entry

  51. v2.1.251
    Fast mode now vets the model change through a hook before applying

    Turning Fast mode on now runs your model-switch hook and can be refused.

    found in this entry's text

  52. v2.1.251
    The /model menu and SDK flag changes wait on PreModelSwitch hooks

    Model and effort changes from the picker now run hooks first and can be cancelled.

    named in this entry, found in this entry's text

  53. v2.1.248
    Model-switch consent can no longer fire twice

    /model can no longer apply a second model change or print a duplicate notice.

    named in this entry, found in this entry's text

  54. v2.1.248
    Usage-limit messages stop telling you to run /usage-credits when it will not help

    Limit messages stop pointing at /usage-credits when that flow isn't available to you.

    found in this entry's text

  55. v2.1.248
    Usage-credits prompts now checked against the disable flag too

    Setting DISABLE_EXTRA_USAGE_COMMAND now also hides the buy-credits prompts, which point at /model instead.

    named in this entry, found in this entry's text

  56. v2.1.246
    Compaction retries on a fallback model when the summarizer is refused

    If compaction's model is refused, it retries on an allowed fallback instead of failing outright.

    named in this entry, found in this entry's text

  57. v2.1.242
    New modelPicker setting curates the /model list

    A new modelPicker setting curates or replaces the model list you see in /model.

    named in this entry, found in this entry's text

  58. v2.1.239
    Effort level is stored as a structured value

    Effort settings are wrapped in a structured value everywhere, including the model menu and SDK.

    named in this entry, found in this entry's text

  59. v2.1.238
    Status line no longer attributes a session model to plan mode

    The status line now says "(this session only)" instead of blaming plan mode for your model.

    found in this entry's text

  60. v2.1.236
    Cancellable waits when /model talks to a cloud session

    You can now escape the wait when /model loads or switches models on a cloud session.

    named in this entry, found in this entry's text

  61. v2.1.234
    Search field in the model picker

    The model picker has a type-to-filter search, but its entry point is hardcoded off.

    named in this entry, found in this entry's text

  62. v2.1.232
    Advisor picker drops unavailable models and explains Fable 5 credits

    The advisor picker hides unavailable models and explains Fable 5's usage-credit requirement.

    named in this entry, found in this entry's text

  63. v2.1.232
    Choosing Fable 5 as advisor now tells you to enable usage credits

    Picking Fable 5 as advisor without usage credits now points you at /model fable.

    named in this entry, found in this entry's text

  64. v2.1.232
    Out-of-credits and spend-limit messages rewritten for non-interactive runs

    Hitting credit or spend caps in non-interactive runs now suggests another model instead of untypeable commands.

    named in this entry, found in this entry's text

  65. v2.1.228
    Bedrock requests go through middleware, and streams become real SSE

    The Bedrock backend was rebuilt so streaming and errors behave like every other provider.

    found in this entry's text

  66. v2.1.223
    Model-cycle shortcut opens /model in cloud sessions instead of just nagging

    The model shortcut now actually opens the model picker in cloud sessions instead of just advising you.

    named in this entry, found in this entry's text

  67. v2.1.209
  68. v2.1.200
  69. v2.1.198
    SSH Sessions Now Support Model Catalog

    found in this entry's text

  70. v2.1.187
    Usage credits messages — cleaner wording

    found in this entry's text

  71. v2.1.181
  72. v2.1.179
    Model Picker "Not Used Recently" Section

    found in this entry's text

  73. v2.1.179
    Fable 5 Consent Flow Improvements

    found in this entry's text

  74. v2.1.175
  75. v2.1.170
    Claude Fable 5 Model Support

    found in this entry's text

  76. v2.1.170
    Fable 5 Launch Announcement Banner

    found in this entry's text

  77. v2.1.124
  78. v2.1.121
    Model Picker Guidance in Remote Sessions

    found in this entry's text

  79. v2.1.119
    Fast Mode Switching in Remote Sessions

    found in this entry's text

  80. v2.1.117
    Model Source Indicator in Status

    found in this entry's text

  81. v2.1.117
    Managed Settings Model Pin Visibility

    found in this entry's text

  82. v2.1.91
  83. v2.1.63
    /model Command Shows Current Model

    found in this entry's text

  84. v2.1.42
    Effort Level Callout for Opus 4.6

    found in this entry's text

  85. v2.1.32
    Claude Opus 4.6 Support

    found in this entry's text

  86. v2.1.32
    Model Issue Error Messages

    found in this entry's text

  87. v2.1.9
    Opus 4.5 Upgrade Nudge

    found in this entry's text

  88. v2.0.51
    Improved Rate Limit Error Messages

    found in this entry's text

  89. v2.0.10
    Model Status Display

    found in this entry's text

  90. v1.0.111
    API-Based Model Validation

    found in this entry's text

  91. v1.0.7
    New Features

    found in this entry's text

  92. v1.0.0
    New Models

    found in this entry's text

  93. v1.0.0
    User-Facing Features

    found in this entry's text

First cited

12

The earliest release whose published evidence quoted /model was v2.1.91, 2 Apr 2026. That is the oldest release this project wrote about it, so it is a floor on the name's age and not the release that introduced it. It is not a presence reading: which builds carried the name is the table below.

ReleaseDateThe span that was quoted
v2.1.912 Apr 2026try /model sonnet
v2.1.17916 Jun 2026Fable 5 needs usage-credits consent - /model to set up
v2.1.2003 Jul 2026Run /model to see available models.
v2.1.2235 Aug 2026Use /model to change the model in cloud sessions
v2.1.23213 Aug 2026Run /model fable to review and enable, then set it as the advisor.
v2.1.23619 Aug 2026Stopped waiting for the cloud session's model list - run /model again, or pass a model name, e.g. /model sonnet

6 further spans in the ledger name it. The list above is the earliest first and stops at 6.

Presence across releases

0

The miner has never read a build containing this name. It is here because a changelog entry of ours names it, which is evidence that it existed and not evidence of which releases carried it. The inventory starts at v2.1.138 and everything older than that was never mined.

Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the slash command does. All slash commands.

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