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DeepSeek V4.1 Flash vs Gemini 3.8 Flash: Cost per Task, Tested
On 11 identical calls on November 6, 2026, both passed every test; Gemini 3.8 Flash at default thinking cost 4.3x DeepSeek V4.1 Flash off-peak, 2.2x at peak.
19 min
Model Comparisons
Side-by-side AI model comparisons on real tasks such as coding, writing, and image work, weighing output quality, token cost, context length, and usage limits.
- 65 articles
- Updated Nov 6, 2026
Gemini 4 Argon vs Claude Fable 5.1: A Tie on Score, Not on Cost
Gemini 4 Argon and Claude Fable 5.1 tie on Artificial Analysis, yet Fable cost 8.6x Argon on everyday tasks in an October–November test, 4.3x from December 1.
18 min
Gemini 4 Argon vs Claude Opus 5.5 vs GPT-6.1 Sol: Cost and Access
Gemini 4 Argon opened to paid API users on October 13 at $2/$10, doubling December 1. At matched effort it costs more per task than Opus 5.5 and 6.5x GPT-6.1 Sol.
18 min
Gemini 4 Argon vs 3.8 Flash: Cost per Task and When to Switch
Gemini 4 Argon lists at 2.67x 3.8 Flash per token, but on five same-prompt calls it cost 1.57x as much through Nov 30, 2026, and 3.15x in December.
18 min
Gemini 4 Argon vs GPT-6 Astra: Which to Use Now and After Dec 1
GPT-6 Astra outscores Gemini 4 Argon 55 to 50 at the same high setting. Argon is cheaper at its default, but its API price doubles on December 1, 2026.
19 min
Kimi K3.1 Pro vs Gemini 4 Argon: Same Price Only Until Dec 1
Both list at $2/$10 per 1M tokens through November 30, 2026, then Argon doubles. K3.1 Pro leads terminal coding; Argon leads overall and on factual recall.
17 min
Claude Sonnet 5.5 vs GPT-6.1 Terra: 2x per Token, 2–10x per Task
GPT-6.1 Terra lists at half Claude Sonnet 5.5's price, and Sonnet counts 1.43x the tokens on English, so below 272K the same tasks bill 2–10x more on Sonnet.
17 min
Gemini 4 Carbon vs Gemini 4 Argon: Slower Start, Faster Agents
Gemini 4 Carbon beats Argon 59.4 to 50.4 on AA's index but ties on SaaS automation. It's twice as slow to start a reply, yet finishes coding-agent tasks faster.
15 min
Claude Haiku 5.5 vs GPT-6 Luna: Same Price, 2.2x Cost per Task
Claude Haiku 5.5 and GPT-6 Luna share $0.10/$0.50 rates under 100K tokens, yet Haiku cost 2.2x more per task at default effort and reprices 5x above 100K.
20 min
Claude Opus 5.5 vs GPT-6.1 Terra: 1/9 the Cost Only at Max
GPT-6.1 Terra's 1/9 cost claim is max vs max. At equal AA scores, Opus 5.5 high costs 3.6x Terra max per task, and English input bills about 5.8x.
16 min
Claude Opus 5.5 vs GPT-6.1 Sol and GPT-6 Sol: When Opus Pays Off
Against GPT-6.1 Sol, Opus 5.5 costs exactly 2x per token under 272K input and stays pricier above. Opus scores higher; pay only where it passes more tasks.
15 min
Claude Sonnet 5.5 vs GPT-6.1 Sol: Same Price, 2–8x Cost per Task
Same $2/$10 list price, but Sonnet 5.5 costs 2.2–7.9x GPT-6.1 Sol per AA task. Start on Sol; use Sonnet for terminal agents and prompts over 272K tokens.
20 min
Claude Sonnet 5.5 vs GPT-6 Astra: When the Cheaper Model Wins
GPT-6 Astra outscores Sonnet 5.5 at every effort level on Artificial Analysis' index. Sonnet is cheaper per task up to high, faster, and wins above 272K input.
18 min
Claude Sonnet 5.5 vs Opus 5.5: When Half the Price Really Saves
Sonnet 5.5 costs half as much per token and suits well-scoped work at low or medium effort. At max it costs as much per task as Opus 5.5 and scores lower.
19 min
Fable 5.5 vs Gemini 4 vs GPT-6.1: Which Can You Use Today?
As of October 14, 2026, you can call GPT-6.1 Sol and Gemini 4 Argon, available since October 13. Fable 5.5 is unannounced, and GPT-6.1 Astra was shelved.
15 min
GPT-6 Astra vs Claude Fable 5.1: Same Price, 1.5x the Tokens
Both list at $10/$50 per million tokens, but on October 26, 2026 Fable 5.1 counted 1.45x Astra's tokens for English and cost 1.5–1.6x on tasks both passed.
18 min
GPT-6.1 Sol vs GPT-6 Astra vs GPT-6 Sol: When Astra Is Worth It
Move gpt-6-sol traffic to GPT-6.1 Sol at the same price. Astra leads it by 2–8 points at equal effort; Sol max ties Astra high for 2.6x less per task.
20 min
GPT-6.1 Terra vs GPT-6.1 Sol: Half the Price, Not Always Cheaper
Terra's API and Codex rates are half of Sol's, and it ran small Codex tasks twice as fast. At xhigh effort, though, it costs more per task than Sol at medium.
19 min
GPT-6.1 Terra vs GPT-6 Luna: 10× per Token, 2.7–6.3× per Task
GPT-6.1 Terra costs 10× GPT-6 Luna per token. On 12 tasks tested October 28, 2026, it cost 2.7–6.3× as much per passed task and passed 15–16 of 16 to Luna's 12.
15 min
GPT-6 Sol vs Terra vs Luna vs Astra: Which Model Should You Use?
GPT-6 now has a Terra: GPT-6.1 Terra, released October 26, 2026, costs half of GPT-6.1 Sol per token and about 10 times Luna. Pick by workload, then test.
16 min
Kimi K3.1 Pro vs Claude Opus 5.5: Half per Token, Not per Task
K3.1 Pro's $2/$10 is half of Opus 5.5's $4/$20 per token, yet at Kimi's default max effort a task can cost as much as Opus. Set effort before you switch.
20 min
Kimi K3.1 Pro vs GPT-6.1 Sol: Same $2/$10, 3× the Cost per Task
Both list at $2/$10 per million tokens, but Artificial Analysis puts K3.1 Pro at $3.68 per task against $1.27 for Sol at max, which also scores higher.
21 min
Muse Wonder vs Opus 5.5: Benchmarks and Cost at the Same $4/$20
At max effort on Artificial Analysis, Claude Opus 5.5 scores 58 to Muse Wonder's 43, and Wonder costs 31% less per task. Wonder Full has no API.
20 min
Claude Sonnet 5.5 vs Gemini 3.8 Flash: Cost per Task, Tested
Gemini 3.8 Flash is 2.67x cheaper per token, yet on 11 identical calls at high effort on October 26, 2026 it cost 2.42x as much as Claude Sonnet 5.5.
18 min