95 pages for xhigh.

choosing-a-model Claude Developer Platform · in the page about-claude/models/choosing-a-model …and adjust the same way. On Claude Opus 4.8 and Claude Opus 4.7, the `xhigh` effort level, between `high` and `max`, is the best setting for most coding and agentic use cases. *** ## Choose the best… Or, for the model with the same capabilities and no access approval requirement: Claude Developer Platform · in the page about-claude/models/migration-guide …4.8, the recommendation for coding and high-autonomy work is to set `xhigh` explicitly. On `claude-fable-5` and `claude-mythos-5`, use `high` as the default for most tasks and reserve `xhigh` for the… optimizing-for-cost-and-intelligence Claude Developer Platform · in the page about-claude/models/optimizing-for-cost-and-intelligence …| Claude Opus 5.5 | `xhigh` | 96.7% of tasks solved (a single run) | $0.74 USD | | DeepResearch Bench II[7](https://platform.claude.com/… claude-api-skill Claude Developer Platform · in the page agents-and-tools/agent-skills/claude-api-skill …target model (for example, the default `high` on Claude Opus 5, and `xhigh` for coding and agentic use cases on Claude Opus 4.8 and Claude Opus 4.7) * **Prompt-behavior tuning**, flagging length-cont… Beta Claude Developer Platform · in the page api/beta …Whether this capability is supported by the model. - `xhigh: BetaCapabilitySupport or null` Whether the model supports xhigh effort level. - `image_input: BetaCapabilityS… Agents Claude Developer Platform · in the page api/beta/agents …- `"high"` High effort. Favors reasoning depth. - `"xhigh"` Extra-high effort. Not all models accept this level. - `"max"` Maximum effort. Favors reasoning d… Archive Agent Claude Developer Platform · in the page api/beta/agents/archive …Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied. - `BetaManagedAgentsEffort… Create Agent Claude Developer Platform · in the page api/beta/agents/create …- `"high"` High effort. Favors reasoning depth. - `"xhigh"` Extra-high effort. Not all models accept this level. - `"max"` Maximum effort. Favors reasoning d… List Agents Claude Developer Platform · in the page api/beta/agents/list …Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied. - `BetaManagedAgentsEffort… Get Agent Claude Developer Platform · in the page api/beta/agents/retrieve …Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied. - `BetaManagedAgentsEffort… Update Agent Claude Developer Platform · in the page api/beta/agents/update …- `"high"` High effort. Favors reasoning depth. - `"xhigh"` Extra-high effort. Not all models accept this level. - `"max"` Maximum effort. Favors reasoning d… Versions Claude Developer Platform · in the page api/beta/agents/versions …Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied. - `BetaManagedAgentsEffort… List Agent Versions Claude Developer Platform · in the page api/beta/agents/versions/list …Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied. - `BetaManagedAgentsEffort… Messages Claude Developer Platform · in the page api/beta/messages …is but take longer. Valid values are `low`, `medium`, `high`, `xhigh`, or `max`. - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `model: Model`… Batches Claude Developer Platform · in the page api/beta/messages/batches …ut take longer. Valid values are `low`, `medium`, `high`, `xhigh`, or `max`. - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"`… Create a Message Batch Claude Developer Platform · in the page api/beta/messages/batches/create …ut take longer. Valid values are `low`, `medium`, `high`, `xhigh`, or `max`. - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"`… Count tokens in a Message Claude Developer Platform · in the page api/beta/messages/count_tokens …is but take longer. Valid values are `low`, `medium`, `high`, `xhigh`, or `max`. - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `model: Model`… Create a Message Claude Developer Platform · in the page api/beta/messages/create …is but take longer. Valid values are `low`, `medium`, `high`, `xhigh`, or `max`. - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `model: Model`… Models Claude Developer Platform · in the page api/beta/models …Whether this capability is supported by the model. - `xhigh: BetaCapabilitySupport or null` Whether the model supports xhigh effort level. - `image_input: BetaCapabilityS… List Models Claude Developer Platform · in the page api/beta/models/list …Whether this capability is supported by the model. - `xhigh: BetaCapabilitySupport or null` Whether the model supports xhigh effort level. - `image_input: BetaCapabilityS… Get a Model Claude Developer Platform · in the page api/beta/models/retrieve …Whether this capability is supported by the model. - `xhigh: BetaCapabilitySupport or null` Whether the model supports xhigh effort level. - `image_input: BetaCapabilityS… Sessions Claude Developer Platform · in the page api/beta/sessions …gh"` High effort. Favors reasoning depth. - `"xhigh"` Extra-high effort. Not all models accept this level. - `"max"` Maximum effort. Favors… Archive Session Claude Developer Platform · in the page api/beta/sessions/archive …Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied. - `BetaManagedAgentsEffo… Create Session Claude Developer Platform · in the page api/beta/sessions/create …gh"` High effort. Favors reasoning depth. - `"xhigh"` Extra-high effort. Not all models accept this level. - `"max"` Maximum effort. Favors… Events Claude Developer Platform · in the page api/beta/sessions/events …Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied. - `BetaManagedAgentsEf… List Events Claude Developer Platform · in the page api/beta/sessions/events/list …Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied. - `BetaManagedAgentsEf… Stream Events Claude Developer Platform · in the page api/beta/sessions/events/stream …Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied. - `BetaManagedAgentsEf… List Sessions Claude Developer Platform · in the page api/beta/sessions/list …Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied. - `BetaManagedAgentsEffo… Get Session Claude Developer Platform · in the page api/beta/sessions/retrieve …Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied. - `BetaManagedAgentsEffo… Threads Claude Developer Platform · in the page api/beta/sessions/threads …Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied. - `BetaManagedAgentsEf… Archive Session Thread Claude Developer Platform · in the page api/beta/sessions/threads/archive …Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied. - `BetaManagedAgentsEf… Events Claude Developer Platform · in the page api/beta/sessions/threads/events …Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied. - `BetaManagedAgentsEf… List Session Thread Events Claude Developer Platform · in the page api/beta/sessions/threads/events/list …Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied. - `BetaManagedAgentsEf… Stream Session Thread Events Claude Developer Platform · in the page api/beta/sessions/threads/events/stream …Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied. - `BetaManagedAgentsEf… List Session Threads Claude Developer Platform · in the page api/beta/sessions/threads/list …Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied. - `BetaManagedAgentsEf… Get Session Thread Claude Developer Platform · in the page api/beta/sessions/threads/retrieve …Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied. - `BetaManagedAgentsEf… Update Session Claude Developer Platform · in the page api/beta/sessions/update …Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied. - `BetaManagedAgentsEffo… errors Claude Developer Platform · in the page api/errors …s it writes between tool calls come back as thinking blocks. ``` At `xhigh` or `max` [effort](https://platform.claude.com/docs/en/build-with-claude/effort), a request with `between_tools` also return… Messages Claude Developer Platform · in the page api/messages …ysis but take longer. Valid values are `low`, `medium`, `high`, `xhigh`, or `max`. - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `format: optional JSONOutp… Batches Claude Developer Platform · in the page api/messages/batches …but take longer. Valid values are `low`, `medium`, `high`, `xhigh`, or `max`. - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `f… Create a Message Batch Claude Developer Platform · in the page api/messages/batches/create …but take longer. Valid values are `low`, `medium`, `high`, `xhigh`, or `max`. - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `f… Count tokens in a Message Claude Developer Platform · in the page api/messages/count_tokens …ysis but take longer. Valid values are `low`, `medium`, `high`, `xhigh`, or `max`. - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `format: optional JSONOutp… Create a Message Claude Developer Platform · in the page api/messages/create …ysis but take longer. Valid values are `low`, `medium`, `high`, `xhigh`, or `max`. - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `format: optional JSONOutp… Models Claude Developer Platform · in the page api/models …Whether this capability is supported by the model. - `xhigh: CapabilitySupport or null` Whether the model supports xhigh effort level. - `image_input: CapabilitySupport`… List Models Claude Developer Platform · in the page api/models/list …Whether this capability is supported by the model. - `xhigh: CapabilitySupport or null` Whether the model supports xhigh effort level. - `image_input: CapabilitySupport`… Get a Model Claude Developer Platform · in the page api/models/retrieve …Whether this capability is supported by the model. - `xhigh: CapabilitySupport or null` Whether the model supports xhigh effort level. - `image_input: CapabilitySupport`… effort Claude Developer Platform · in the page build-with-claude/effort …t possible reasoning and most thorough analysis | | `xhigh` | Extended capability for long-horizon work. Available on Claude Fable 5.1, Claude Mythos 5.1, Claude Fable 5, Claude Myth… mid-conversation-effort-example Claude Developer Platform · in the page build-with-claude/mid-conversation-effort-example …/platform.claude.com/docs/en/build-with-claude/effort) value such as `xhigh`. There is no hidden level above the ones on that page. This example sets effort at the top level of each request, which nee… prompting-claude-fable-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-fable-5 …st on Claude Fable 5. Use `high` as the default for most tasks, with `xhigh` for the most capability-sensitive workloads and `medium` or `low` for routine work. Lower effort settings on Claude Fable 5… Delivering work Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-fable-5-1 …efer-targeted-edits-over-whole-file-rewrites) * Long deliverables at `xhigh` or `max` effort take a long time or hit `max_tokens`: [Leave room for long outputs at xhigh and max effort](https://platfor…