Update gpt-5 capabilities

[mnort9]

What this does

Adds gpt-5, gpt-5-mini, and gpt-5-nano capabilities.

I tried to run overcommit, but it updated more files than I expected so not sure if this is still used on every commit. I did run rubocop/tests.

Type of change

• Bug fix
• New feature
• Breaking change
• Documentation
• Performance improvement

Scope check

• I read the Contributing Guide
• This aligns with RubyLLM's focus on LLM communication
• This isn't application-specific logic that belongs in user code
• This benefits most users, not just my specific use case

Quality check

• I ran overcommit --install and all hooks pass
• I tested my changes thoroughly
• I updated documentation if needed
• I didn't modify auto-generated files manually (models.json, aliases.json)

API changes

• Breaking change
• New public methods/classes
• Changed method signatures
• No API changes

[crmne]

ruby_llm/CONTRIBUTING.md

Line 22 in ee0d8c2

- **Model data fixes** → File with [Parsera](https://github.com/parsera-labs/api-llm-specs/issues)

[mnort9]

@crmne I ran into this issue b/c function calling wasn't working for gpt-5-mini & gpt-5-nano.

Parsera seems to be missing info on some models capabilities, modalities even on somewhat older models like gpt-4.1:

--

I noticed gpt-4.1 capabilities were hardcoded, so I figured this was in place since Parsera has some data missing.

ruby_llm/lib/ruby_llm/providers/openai/capabilities.rb

Lines 85 to 88 in ee0d8c2

	def supports_functions?(model_id)
	case model_family(model_id)
	when 'gpt41', 'gpt41_mini', 'gpt41_nano', 'gpt4', 'gpt4_turbo', 'gpt4o', 'gpt4o_mini', 'o1', 'o1_pro',
	'o3_mini' then true

I can open an issue with Parsera still, it just didn't look like there was too much activity in that repo.

[crmne]

Please do file an issue with Parsera directly: https://github.com/parsera-labs/api-llm-specs/issues

If users don't report issues, Parsera won't know what's broken. The more reports they get, the more likely they'll fix it.

[crmne]

@mnort9 you know what? Screw gatekeeping capabilities.

I removed that in 836113f

Thanks for the inspiration!

[crmne]

Shipping it in 1.6.2 today.

[mnort9]

@crmne Awesome thank you!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.58%. Comparing base (0cb6299) to head (e5c0874).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #345   +/-   ##
=======================================
  Coverage   84.57%   84.58%           
=======================================
  Files          37       37           
  Lines        1932     1933    +1     
  Branches      499      500    +1     
=======================================
+ Hits         1634     1635    +1     
  Misses        298      298           

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[crmne]

Still discussing potential solutions with Parsera, but let's reopen this and get it merged for now at least.