Tool-using agents
What AI can do for this task
Build assistants or agents that call functions, APIs or tools.
Technical requirements
- Tool use (capability listed for the offering)
The model must support tool or function calling.
AI offerings and technical compatibility
Of 20 offerings in the catalog: 20 compatible, 0 unknown, 0 incompatible.
- Compatible
- the technical requirements are met according to the available information.
- Unknown
- the available information is not enough to decide. This is not the same as incompatible.
- Incompatible
- at least one requirement is known not to be met.
Within each group, offerings are listed alphabetically by producer and model. The order says nothing about quality.
Compatible 20
| Model | Version | Offering (access) | Requirements | Source |
|---|---|---|---|---|
| Claude Haiku 4.5 Anthropic |
claude-haiku-4-5 | OpenRouteranthropic/claude-haiku-4.5 |
|
OpenRouter API 2026-10-06 |
| Claude Opus 4.8 Anthropic |
claude-opus-4-8 | OpenRouteranthropic/claude-opus-4.8 |
|
OpenRouter API 2026-10-06 |
| Claude Opus 5.5 Anthropic |
claude-opus-5-5 | OpenRouteranthropic/claude-opus-5.5 |
|
OpenRouter API 2026-10-06 |
| Claude Sonnet 5.5 Anthropic |
claude-sonnet-5-5 | OpenRouteranthropic/claude-sonnet-5.5 |
|
OpenRouter API 2026-10-06 |
| DeepSeek V4 Pro DeepSeek |
deepseek-v4-pro | OpenRouterdeepseek/deepseek-v4-pro-0813 |
|
OpenRouter API 2026-10-06 |
| DeepSeek V4.1 Flash DeepSeek |
deepseek-v4.1-flash | OpenRouterdeepseek/deepseek-v4.1-flash |
|
OpenRouter API 2026-10-06 |
| Gemini 3.1 Pro (Preview) |
gemini-3.1-pro-preview | OpenRoutergoogle/gemini-3.1-pro-preview |
|
OpenRouter API 2026-10-06 |
| Gemini 3.8 Flash |
gemini-3.8-flash | OpenRoutergoogle/gemini-3.8-flash |
|
OpenRouter API 2026-10-06 |
| Llama 4 Maverick Meta |
Llama-4-Maverick-17B-128E-Instruct | OpenRoutermeta-llama/llama-4-maverick |
|
OpenRouter API 2026-10-06 |
| Llama 4 Scout Meta |
Llama-4-Scout-17B-16E-Instruct | OpenRoutermeta-llama/llama-4-scout |
|
OpenRouter API 2026-10-06 |
| Ministral 3 8B Mistral AI |
v25.12 | OpenRoutermistralai/ministral-8b-2512 |
|
OpenRouter API 2026-10-06 |
| Mistral Large 3 Mistral AI |
v25.12 | OpenRoutermistralai/mistral-large-2512 |
|
OpenRouter API 2026-10-06 |
| Mistral Medium 3.5 Mistral AI |
v26.04 | OpenRoutermistralai/mistral-medium-3-5 |
|
OpenRouter API 2026-10-06 |
| Mistral Small 4 Mistral AI |
v26.03 | OpenRoutermistralai/mistral-small-2603 |
|
OpenRouter API 2026-10-06 |
| GPT-6 Astra OpenAI |
gpt-6-astra | OpenRouteropenai/gpt-6-astra |
|
OpenRouter API 2026-10-06 |
| GPT-6 Luna OpenAI |
gpt-6-luna | OpenRouteropenai/gpt-6-luna |
|
OpenRouter API 2026-10-06 |
| GPT-6.1 Sol OpenAI |
gpt-6.1-sol | OpenRouteropenai/gpt-6.1-sol |
|
OpenRouter API 2026-10-06 |
| Qwen3.8 2.4T-A95B Qwen (Alibaba) |
Qwen3.8-2.4T-A95B | OpenRouterqwen/qwen3.8-2.4t-a95b |
|
OpenRouter API 2026-10-06 |
| Qwen3.8 27B Qwen (Alibaba) |
Qwen3.8-27B | OpenRouterqwen/qwen3.8-27b |
|
OpenRouter API 2026-10-06 |
| Grok 4.7 xAI |
grok-4.7 | OpenRouterx-ai/grok-4.7 |
|
OpenRouter API 2026-10-06 |
How much can you trust this comparison?
Technical compatibility is not a measure of answer quality.
- 20 capability checks on this page rely only on the catalog source recorded for each offering (shown in the Source column), not on independent measurement.
- No capability on this page has been measured independently by iaright yet: listed capabilities are not verified performance.
- Capabilities and limits are based on the source identified for each offering, not necessarily on the model maker's documentation. OpenRouter catalog data may differ from model-maker documentation or from the limits of a specific upstream provider.
- Tool calling support does not demonstrate reliable choice of tools or correct arguments.
- iaright has not yet published comparative measurements of quality, cost, speed or reliability for this task.