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Ling 3.1 Flash

inclusionai·inclusionai/ling-3.1-flash·GA·Closed·ling series·NEW
Efficient model for low-latency assistance, extraction, and routine automation

Ling 3.1 Flash by inclusionai is offered by 4 providers on this page. Public prices are shown for 1 of them. Its reference price is $0.075 per 1M input tokens and $0.22 per 1M output tokens. It also has 3 free ($0) channels; free tiers usually carry rate limits, and subscription-covered access bills $0 per token only after the subscription fee.

Artificial Analysis rates it 41.1 on the Intelligence Index. Against its lowest blended price of $0.111 per 1M, that is roughly 370 index points per dollar, which is the value ratio the leaderboards rank on. Median output speed is 210 tokens per second, with 1.83s to the first token. Running one task of the Artificial Analysis suite costs about $0.9857, which reflects how many tokens its reasoning consumes rather than the unit price alone.

The context window is 262,144 tokens, with an output limit of 32,768 tokens. It supports reasoning and tool use.

Specs & pricing

Input / output per 1M tokens
Reference price·NanoGPT
$0.075 / $0.22
Blended $0.11 · Cache read $0.015
Lowest paid·NanoGPTGateway
$0.075 / $0.22
Blended $0.11
3 more $0 channels
Context
262,144
Output limit
32,768
Knowledge cutoff
—
Released / updated
2026-09-29 / 2026-09-29
Capabilities
✓ Reasoning✓ Tool useStructured output✓ TemperatureAttachments
Modalities
Text

Quality & performanceArtificial Analysis · Intelligence Index v4.3

Intelligence41.1
Value370
Coding—
Agentic—
Output speed210 tok/s
TTFT1.83 s
Cost per task$0.99
Value formulaIQ 41.1 ÷ min blended $0.111 = 370

Quality is independently evaluated by Artificial Analysis. Speed/latency are model-level medians.

Available at 4 providers1 with public prices · 3 free

ProviderTierInputOutputCache readCache writeContextOutput limitStatus
OpenRouterGatewayFree——262,14432,768
Vercel AI GatewayCloudFree——262,14432,768
Kilo GatewayGatewayFree——262,14432,768
NanoGPTGateway$0.075$0.22$0.015—262,14432,768

Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.

Reasoning control

Toggle (on / off)effort = noneeffort = loweffort = mediumeffort = high

Your usage cost

1NanoGPT$18.80

3 more channels offer $0 (OpenRouter, Vercel AI Gateway, Kilo Gateway); free tiers usually have rate limits and no SLA, excluded from ranking.

The cheapest paid channel is the only channel.

Price historyone sample accumulated per data sync

Input listOutput listMin blended
$0.22$02026-09-302026-10-012026-09-30 · Input list $02026-10-01 · Input list $0.0752026-09-30 · Output list $02026-10-01 · Output list $0.222026-10-01 · Min blended $0.11

Artificial Analysis evaluations3 items

Humanity's Last Exam39.4%
SciCode54.1%
AA-LCR83.0%

Individual evaluations run by Artificial Analysis, on the same reasoning tier as the intelligence score above. Each benchmark has its own task set and harness, so rows are not comparable with one another. The Intelligence Index above draws on a different, newer set of evaluations.

Related models

inLing 3.1 Flash (Free)same series$0 / $0inLing 3.0 Flash VLsame series$0.075 / $0.22Ling 3.0 Flash VL (DeepInfra)same series$0.06 / $0.18Hy3cheaper alternative$0 / $0Qwen3.7 Flashcheaper alternative$0.03 / $0.13Nemotron 3.5 Lightning 30B A3Bcheaper alternative$0 / $0Laguna S 2.1cheaper alternative$0 / $0
Data partly from models.dev (MIT) · NanoGPT official docs ↗