GPT-4 Turbo alternatives

Quick answer · Updated June 2026

The closest alternative to GPT-4 Turbo is GPT Chat Latest — comparable intelligence (— vs —); for a cheaper option, Claude Opus 4.8 runs $5.00/M vs $10.00/M; for more speed, Morph V3 Fast hits 3.1k t/s; and the best open-weight substitute is MiniMax M3.

Closest match

gpt-chat-latest

Intelligence — · $5.00/M · 61 t/s

Cheaper alternatives

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

$5.00/M input · 56.7 intel

ReasoningTools+2 Q

$1.25/M input · 56.6 intel

ReasoningTools+1 M

$0.300/M input · 54.7 intel

ReasoningTools+2 X

$0.435/M input · 53.8 intel

ReasoningTools+1

Faster alternatives

3.1k t/s · 495ms ttft

3.0k t/s · 435ms ttft

gpt-oss-safeguard-20b

530 t/s · 235ms ttft

ReasoningTools+1 Z

474 t/s · 564ms ttft

ReasoningTools+1 O

gpt-oss-120b:free

450 t/s · 181ms ttft

ReasoningTools O

450 t/s · 181ms 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 Z

49.8 intel · open weights · 203K 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

Frequently asked

What is the best alternative to GPT-4 Turbo?

GPT Chat Latest is the closest alternative to GPT-4 Turbo, with an Intelligence Index of — (GPT-4 Turbo scores —) at $5.00 per million input tokens.

Is there a cheaper alternative to GPT-4 Turbo?

Yes — Claude Opus 4.8 costs $5.00 per million input tokens versus $10.00 for GPT-4 Turbo, while staying within ~8 points of its Intelligence Index.

Is there an open-source alternative to GPT-4 Turbo?

MiniMax M3 is the strongest open-weight alternative to GPT-4 Turbo — downloadable from Hugging Face and self-hostable, scoring 54.7 on intelligence.

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