---
title: "Changes to Anthropic Messages"
method: POST
path: "/anthropic/v1/messages"
---

# Changes to Anthropic Messages

`POST /anthropic/v1/messages`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 4 of 17 revisions.

- **2026-08-20** `6b75203534bb` — 1 info
- **2026-08-14** `63ee8b82144f` — 1 info
- **2026-08-08** `51b817b3f80f` — 3 info
- **2026-08-07** `2df28210837a` — 4 info

## Changes

- **2026-08-20** `6b75203534bb` — 1 info
  - added the new optional request property `prompt_cache_key`
- **2026-08-14** `63ee8b82144f` — 1 info
  - added the new optional request property `models`
- **2026-08-08** `51b817b3f80f` — 3 info
  - added the new optional `header` request parameter `x-deepinfra-service-tier`
  - added the new optional request property `fail_fast`
  - added the new optional request property `service_tier`
- **2026-08-07** `2df28210837a` — 4 info
  - added the new optional request property `thinking/anyOf[subschema #1: AnthropicThinkingConfig]/budget_tokens`
  - added the new optional request property `thinking/anyOf[subschema #1: AnthropicThinkingConfig]/type`
  - the `enabled` request property default value `true` was removed
  - request property `thinking/anyOf[subschema #1: AnthropicThinkingConfig]/enabled` list-of-types was widened by adding types `null` to media type `application/json`

---

[Operation](https://skmtc.dev/deepinfra/apis/deepinfra-api/docs/anthropic/v1/messages/post.md) · [API](https://skmtc.dev/deepinfra/apis/deepinfra-api.md) · [Page](https://skmtc.dev/deepinfra/apis/deepinfra-api/changes/anthropic/v1/messages/post)