Using Kimi K2.5 from Fireworks throws temperate related error #7941

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opened 2026-02-16 18:08:44 -05:00 by yindo · 4 comments
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Originally created by @V4G4X on GitHub (Jan 29, 2026).

Originally assigned to: @rekram1-node on GitHub.

Description

Using Kimi K2.5 via Fireworks gives me this:

Parameter 'temperature' is immutable for kimi_k25 and must be 1.0 (thinking mode). Got 0.6.

Doesn't happen on all requests only some.

Plugins

No plugins

OpenCode version

1.1.41

Steps to reproduce

In my case:

  1. Opened opencode in my repo
  2. Selected Kimi are my model
  3. Asked it to list all a places where a certain word are found
  4. Asked it to remove all it's occurrances.

Many of it's grep tool calls worked.
But eventually the error occurred after a grep tool call only:

Screenshot and/or share link

Image

Operating System

Darwin Varuns-MBP 25.0.0 Darwin Kernel Version 25.0.0: Wed Sep 17 21:41:39 PDT 2025; root:xnu-12377.1.9~141/RELEASE_ARM64_T8103 arm64

Terminal

Ghostty 1.2.3 Version - version: 1.2.3 - channel: stable Build Config - Zig version : 0.14.1 - build mode : builtin.OptimizeMode.ReleaseFast - app runtime : apprt.Runtime.none - font engine : font.main.Backend.coretext - renderer : renderer.generic.Renderer(renderer.Metal) - libxev : kqueue

Originally created by @V4G4X on GitHub (Jan 29, 2026). Originally assigned to: @rekram1-node on GitHub. ### Description Using Kimi K2.5 via Fireworks gives me this: ``` Parameter 'temperature' is immutable for kimi_k25 and must be 1.0 (thinking mode). Got 0.6. ``` Doesn't happen on all requests only some. ### Plugins No plugins ### OpenCode version 1.1.41 ### Steps to reproduce In my case: 1. Opened opencode in my repo 2. Selected Kimi are my model 3. Asked it to list all a places where a certain word are found 4. Asked it to remove all it's occurrances. Many of it's grep tool calls worked. But eventually the error occurred after a grep tool call only: ### Screenshot and/or share link <img width="1232" height="936" alt="Image" src="https://github.com/user-attachments/assets/23be563c-434e-4e20-b96e-df4242b4188e" /> ### Operating System Darwin Varuns-MBP 25.0.0 Darwin Kernel Version 25.0.0: Wed Sep 17 21:41:39 PDT 2025; root:xnu-12377.1.9~141/RELEASE_ARM64_T8103 arm64 ### Terminal Ghostty 1.2.3 Version - version: 1.2.3 - channel: stable Build Config - Zig version : 0.14.1 - build mode : builtin.OptimizeMode.ReleaseFast - app runtime : apprt.Runtime.none - font engine : font.main.Backend.coretext - renderer : renderer.generic.Renderer(renderer.Metal) - libxev : kqueue
yindo added the bugzen labels 2026-02-16 18:08:44 -05:00
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@github-actions[bot] commented on GitHub (Jan 29, 2026):

This issue might be a duplicate of existing issues. Please check:

  • #11053: [BUG] Kimi k2.5 doesn't use the question tool - Also reports Kimi K2.5 issues with tool usage and model parameters

Feel free to ignore if this doesn't address your specific case.

@github-actions[bot] commented on GitHub (Jan 29, 2026): This issue might be a duplicate of existing issues. Please check: - #11053: [BUG] Kimi k2.5 doesn't use the question tool - Also reports Kimi K2.5 issues with tool usage and model parameters Feel free to ignore if this doesn't address your specific case.
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@gilbrotheraway commented on GitHub (Jan 31, 2026):

same issue here

@gilbrotheraway commented on GitHub (Jan 31, 2026): same issue here
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@sudoer777 commented on GitHub (Jan 31, 2026):

I updated to v1.1.47 and stopped getting the error

@sudoer777 commented on GitHub (Jan 31, 2026): I updated to `v1.1.47` and stopped getting the error
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@minami-sw-roger commented on GitHub (Jan 31, 2026):

export KIMI_TEMPERATURE=1.0

@minami-sw-roger commented on GitHub (Jan 31, 2026): export KIMI_TEMPERATURE=1.0
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Reference: anomalyco/opencode#7941