All tasks / Text & knowledge / Chat & assistants

Best AI APIs for chat & assistants

Models you can call through a paid API, ranked from public benchmarks, with their price in this task’s unit.

STop ranked: Gemini 4 Argon (Google), 1,524 on LMArena Text Arena (overall, style control).50 options listed · data verified 19 Oct 2026

Ranked list

Best AI APIs for chat & assistants
TierNameApproachRunsRated byPriceSkillCompare
S Gemini 4 Argon
Google
ModelsCloud1,524 on LMArena Text Arena (overall, style control)$4/M tokens—
S Muse Wonder
Meta
ModelsCloud1,509 on LMArena Text Arena (overall, style control)$8/M tokens—vs Gemini 4 Argon
S Claude Opus 5.5
Anthropic
ModelsCloud1,508 on LMArena Text Arena (overall, style control)$8/M tokens—vs Gemini 4 Argon
S Claude Fable 5.1
Anthropic
ModelsCloud1,502 on LMArena Text Arena (overall, style control)$20/M tokens—vs Gemini 4 Argon
S Gemini 3.8 Flash
Google
ModelsCloud1,496 on LMArena Text Arena (overall, style control)$1.5/M tokens—vs Gemini 4 Argon
S Muse Spark 1.3
Meta
ModelsCloud1,494 on LMArena Text Arena (overall, style control)$2/M tokens—
S Gemini 3.1 Pro (Preview)
Google
ModelsCloud1,487 on LMArena Text Arena (overall, style control)$4.5/M tokens—
S Kimi K3
Moonshot AI
ModelsLocal1,487 on LMArena Text Arena (overall, style control)~1600 GB VRAM—
S GPT-6.1 Sol
OpenAI
ModelsCloud1,484 on LMArena Text Arena (overall, style control)$4/M tokens—
A Qwen3.8-Max
Alibaba (Qwen)
ModelsCloud1,482 on LMArena Text Arena (overall, style control)$3/M tokens—
A MiMo-V2.6-Pro
Xiaomi
ModelsLocal1,479 on LMArena Text Arena (overall, style control)~585 GB VRAM—
A GLM-5.3
Z.ai
ModelsLocal1,479 on LMArena Text Arena (overall, style control)~425 GB VRAM—
A GPT-6 Astra
OpenAI
ModelsCloud1,477 on LMArena Text Arena (overall, style control)$20/M tokens—vs Gemini 4 Argon
A Claude Sonnet 5.5
Anthropic
ModelsCloud1,475 on LMArena Text Arena (overall, style control)$4/M tokens—vs Gemini 4 Argon
A DeepSeek-V4.1-Flash-1017
DeepSeek
ModelsLocal1,475 on LMArena Text Arena (overall, style control)~320 GB VRAM—
A GLM-5.3-Flash
Z.ai
ModelsLocal1,474 on LMArena Text Arena (overall, style control)~185 GB VRAM—
A DeepSeek-V4-Pro-0813
DeepSeek
ModelsLocal1,465 on LMArena Text Arena (overall, style control)~920 GB VRAM—
A Qwen3.7-Plus
Alibaba (Qwen)
ModelsCloud1,456 on LMArena Text Arena (overall, style control)$0.56/M tokens—
A Gemini 3.5 Flash-Lite
Google
ModelsCloud1,455 on LMArena Text Arena (overall, style control)$0.85/M tokens—
A Gemma 4 (31B)
Google DeepMind
ModelsLocal1,452 on LMArena Text Arena (overall, style control)~19 GB VRAM—
A MiMo-V2.6-Flash
Xiaomi
ModelsLocal1,451 on LMArena Text Arena (overall, style control)~178 GB VRAM—
A Step 5 Preview
StepFun
ModelsLocal1,447 on LMArena Text Arena (overall, style control)~346 GB VRAM—
A Grok 4.7
xAI
ModelsCloud1,444 on LMArena Text Arena (overall, style control)$3/M tokens—
A GPT-6 Luna
OpenAI
ModelsCloud1,443 on LMArena Text Arena (overall, style control)$0.2/M tokens—
A MiniMax-M3
MiniMax
ModelsLocal1,441 on LMArena Text Arena (overall, style control)~245 GB VRAM—
A Inkling
Thinking Machines Lab
ModelsLocal1,441 on LMArena Text Arena (overall, style control)~557 GB VRAM—
A Qwen3.8-27B
Alibaba (Qwen)
ModelsLocal1,438 on LMArena Text Arena (overall, style control)~17 GB VRAM—
A Mistral Large 4 (preview)
Mistral AI
ModelsCloud1,432 on LMArena Text Arena (overall, style control)$2.06/M tokens—
A Mistral Medium 3.5
Mistral AI
ModelsLocal1,426 on LMArena Text Arena (overall, style control)~75 GB VRAM—
A Nemotron 3 Ultra 550B-A55B
NVIDIA
ModelsLocal1,426 on LMArena Text Arena (overall, style control)~321 GB VRAM—
A Muse Glimmer 30B
Meta
ModelsLocal1,425 on LMArena Text Arena (overall, style control)~19 GB VRAM—
B Nemotron 3.5 Super VL 120B-A12B
NVIDIA
ModelsLocal1,416 on LMArena Text Arena (overall, style control)~72 GB VRAM—
B Inkling Small
Thinking Machines Lab
ModelsLocal1,404 on LMArena Text Arena (overall, style control)~159 GB VRAM—
B Solar Pro 4
Upstage
ModelsCloud1,386 on LMArena Text Arena (overall, style control)$0.52/M tokens—
B Claude Haiku 5.5
Anthropic
ModelsCloud43 on Artificial Analysis Intelligence Index$0.2/M tokens—
B Trinity Large Thinking
Arcee AI
ModelsLocal1,367 on LMArena Text Arena (overall, style control)~229 GB VRAM—
B Ling-3.1-flash
inclusionAI (Ant Group)
ModelsLocal41 on Artificial Analysis Intelligence Index~321 GB VRAM—
B gpt-oss-120b
OpenAI
ModelsLocal1,352 on LMArena Text Arena (overall, style control)~80 GB VRAM—
B Nemotron 3.5 Lightning 30B-A3B
NVIDIA
ModelsLocal1,351 on LMArena Text Arena (overall, style control)~20 GB VRAM—
B Qwen3.8-2.4T-A95B
Alibaba (Qwen)
ModelsLocal40 on Artificial Analysis Intelligence Index~1370 GB VRAM—
C Muse Spark Open (816B-A42B)
Meta
ModelsLocal39 on Artificial Analysis Intelligence Index~470 GB VRAM—
C Llama 4 Maverick
Meta
ModelsLocal1,327 on LMArena Text Arena (overall, style control)~230 GB VRAM—
C gpt-oss-20b
OpenAI
ModelsLocal1,317 on LMArena Text Arena (overall, style control)~16 GB VRAM—
C Beam 1.0 (501B-A23B)
Reflection AI
ModelsLocal30 on Artificial Analysis Intelligence Index~287 GB VRAM—
C Kimi K2.7 Code
Moonshot AI
ModelsLocal26 on Artificial Analysis Intelligence Index~587 GB VRAM—
C LongCat-2.0
Meituan (LongCat)
ModelsLocal19 on Artificial Analysis Intelligence Index~1014 GB VRAM—
C Command A+ (05-2026)
Cohere
ModelsLocal13 on Artificial Analysis Intelligence Index~126 GB VRAM—
C Mercury 2.5
Inception
ModelsCloud12 on Artificial Analysis Intelligence Index$0.34/M tokens—
C Ministral 3 14B (2512)
Mistral AI
ModelsLocal6 on Artificial Analysis Intelligence Index~9 GB VRAM—
C Mistral Small 4 (2603)
Mistral AI
ModelsLocal11 on Artificial Analysis Intelligence Index~69 GB VRAM—

Tiers come only from public benchmarks (LMArena Text Arena (overall, style control), Artificial Analysis Intelligence Index); tools without a result of their own inherit the tier of the best model they offer. How we rank.