Alternatives

What are the alternatives to Claude Sonnet 5?

Claude Sonnet 5 ranks 45 of 94 in the overall index and costs $4 per million tokens.

Gemini 4 Argon: Ahead in the overall index (121.4 vs. 92.1) at a similar price ($4 vs. $4 per million tokens).

MiMo V2.6 Flash: Level in the overall index (97.3 vs. 92.1) but cheaper: $0.18 instead of $4 per million tokens.

The alternatives by reason

Every card names the values it rests on. A model appears only once.

Stronger, not much pricier
Gemini 4 Argon
Ahead in the overall index (121.4 vs. 92.1) at a similar price ($4 vs. $4 per million tokens).
Overall index
121.4
Price (3:1)
$4
Speed
46
Rank 6 · Upper group
Head to head: Claude Sonnet 5 vs. Gemini 4 Argon Open the profile
Similar strength, cheaper
MiMo V2.6 Flash
Level in the overall index (97.3 vs. 92.1) but cheaper: $0.18 instead of $4 per million tokens.
Overall index
97.3
Price (3:1)
$0.18
Speed
38
Rank 38 · Middle group
Open the profile
With open weights
DeepSeek V4.1 Flash 1017
The best model with open weights, stronger: 106.7 vs. 92.1 in the overall index.
Overall index
106.7
Price (3:1)
$0.26
Speed
126
Rank 20 · Middle group
Head to head: Claude Sonnet 5 vs. DeepSeek V4.1 Flash 1017 Open the profile
Similar strength, faster
GPT-5.6 Luna
Level in the overall index (93.8 vs. 92.1) and faster: 123 instead of 77 tokens per second.
Overall index
93.8
Price (3:1)
$0.45
Speed
123
Rank 44 · Middle group
Head to head: Claude Sonnet 5 vs. GPT-5.6 Luna Open the profile
The successor
Claude Sonnet 5.5
The successor to Claude Sonnet 5. Overall index 121.8 vs. 92.1.
Overall index
121.8
Price (3:1)
$4
Speed
103
Rank 5 · Upper group
Head to head: Claude Sonnet 5 vs. Claude Sonnet 5.5 Open the profile

The nearest generally available models by overall index, with rank, price and speed. Models with limited access and retired models are left out.

Rank	Model	Overall index	Price (3:1)	Speed
40	GPT-6 Luna	95.8	$0.20	77
41	Claude Opus 4.7	95.1	$10	57
42	Grok 4.5	94.8	$3	52
43	GLM-5.3-Flash	94.3	$0.24	101
44	GPT-5.6 Luna	93.8	$0.45	123
45	Claude Sonnet 5this model	92.1	$4	77
46	Gemini 3.1 Pro Preview	91.4	$4.50	96
47	GLM-5.2	89.0	$2.15	73

Price in dollars per million tokens, mixed from 3 parts input and 1 part output. Speed in tokens per second.