o1 alternatives

Quick answer · Updated June 2026

The closest alternative to o1 is GPT Chat Latest — comparable intelligence (— vs —); for a cheaper option, Claude Fable 5 runs $10.00/M vs $15.00/M; for more speed, Morph V3 Large hits 2.6k t/s; and the best open-weight substitute is MiniMax M3.

Closest match

gpt-chat-latest

Intelligence — · $5.00/M · 72 t/s

Cheaper alternatives

$10.00/M input · 64.9 intel

ReasoningTools+2 A

claude-opus-4.8

$5.00/M input · 61.4 intel

ReasoningTools+2 A

claude-opus-4.7

$5.00/M input · 57.3 intel

ReasoningTools+2 O

$2.50/M input · 56.8 intel

ReasoningTools+2 O

$5.00/M input · 56.7 intel

ReasoningTools+2 Q

$1.25/M input · 56.6 intel

ReasoningTools+1

Faster alternatives

2.6k t/s · 339ms ttft

gpt-oss-120b:free

554 t/s · 161ms ttft

ReasoningTools O

554 t/s · 161ms ttft

ReasoningTools+1 I

476 t/s · 253ms ttft

ReasoningTools+1 Q

427 t/s · 297ms ttft

ReasoningTools+1 O

397 t/s · 223ms ttft

ReasoningTools+1

Open-source alternatives

54.7 intel · open weights · 1.0M ctx

ReasoningTools+2 X

53.8 intel · open weights · 1.0M ctx

ReasoningTools+1 M

49.6 intel · open weights · 205K ctx

ReasoningTools+1 X

49.0 intel · open weights · 1.0M ctx

ReasoningTools+3 N

nemotron-3-ultra-550b-a55b:free

47.7 intel · open weights · 1M ctx

ReasoningTools N

nemotron-3-ultra-550b-a55b

47.7 intel · open weights · 1M ctx

ReasoningTools+1

Frequently asked

What is the best alternative to o1?

GPT Chat Latest is the closest alternative to o1, with an Intelligence Index of — (o1 scores —) at $5.00 per million input tokens.

Is there a cheaper alternative to o1?

Yes — Claude Fable 5 costs $10.00 per million input tokens versus $15.00 for o1, while staying within ~8 points of its Intelligence Index.

Is there an open-source alternative to o1?

MiniMax M3 is the strongest open-weight alternative to o1 — downloadable from Hugging Face and self-hostable, scoring 54.7 on intelligence.

← o1 details All openai models