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DeepSeek

DeepSeek V4 Flash

One model name, two snapshots (0420, 0731): the API name stayed deepseek-v4-flash. Scores use the current snapshot's evidence only.

Snapshots: 0420 Apr 24 → 0731 Jul 31 · current

FTI
20

4 sources, 4 independent of the vendor: centre 20.

how FTI is computed

#22 of 72 with an FTI score
Context200Kon the Zen free tier
Imagesnoimage input
Free now2 of 4channels

Where it's free now 4 channels tracked

SenseNova listed
no end announced
Checked Oct 28 · public record
ModelScope listed
no end announced
Checked Oct 28 · public record
OpenCode Zen not answering
not answering
at last check, Oct 6
Checked Oct 6 · agent run
Letta ended
ended 11 days ago
Oct 23
Checked Oct 23 · catalogue

Also free through programs whose allowance covers this model · amounts are shared with other models

Huawei Cloud CodeArts daily free tokens live10M tokens a day on the promo models; resets at 24:00 UTC+8, first come first served a day account
SenseNova Token Plan Free Credit Pool live600,000 shared credit points/week (rolling 60,000/5h); Free public beta, ¥0 a week account

Free periods one bar per channel; markers are events

free so farpast announced endofficial end aheadinferred end aheadno end announcedended / not answering● event · ◆ end announced · tap one to see it

What happened newest first · times link to the source

Fri, Oct 2311 days ago
endedDeepSeek V4 Flash · Lettaended
DeepSeek V4 Flash on Letta is no longer free: at the 2026-10-23 recheck the model catalogue lists it under the credit-billed tier, and a live free-plan probe was refused with "minimum $1 in credits is required" (the same error as its sister lane on 2026-10-17); a letta/echo control on the same account passed, so the refusal is model-specific → end date Oct 23
Source: Letta pricing
Tue, Oct 628 days ago
listedDeepSeek V4.1 Flash · Lettaended DeepSeek V4 Flash · Lettaended
Both carry a green "Free" badge in the Letta app's Hosted model list (other hosted models show "Quota" or "Out of credits"); V4.1 Flash ran an agent session on a free account. No official start or end date found
Source: own check
Sun, Oct 430 days ago
stopped answeringDeepSeek V4 Flash · OpenCode Zennot answering
Shown as unavailable in the Zen catalogue
Source: own check
Sun, Aug 16
became availableDeepSeek V4 Flash · OpenCode Zennot answering
Free tier back in the catalogue (HTTP 200)
Source: own check
Thu, Aug 13
became availableDeepSeek V4 Flash · Lettaended
Letta: "DeepSeek V4 Flash are now available on Letta Cloud. Use your Letta API credits to run either model." Paid credits then, not free
Source: Letta on LinkedIn
Fri, Jul 31
snapshot updatedDeepSeek V4 Flash · OpenCode Zennot answering DeepSeek V4 Flash · SenseNovalisted DeepSeek V4 Flash · Lettaended DeepSeek V4 Flash · ModelScopelisted
DeepSeek V4 Flash updated in place to 0731 (re-post-trained on the same architecture); the API name deepseek-v4-flash is unchanged. Which snapshot each third-party channel serves is not recorded.
Source: DeepSeek API change log

Channel details

OpenCode Zen not answering✕ humans✕ agents

Tested by us
not measured
Model ID
opencode/deepseek-v4-flash-free
To start
$0 · no account Free models run inside the OpenCode app with no account; the Zen API key route needs billing details
Use it
CLI only
Free condition
Inside the OpenCode app, no account; the raw API refuses free models (403 FreeTierError); free for a limited time
Limit (stated)
not published
Started
Aug 16
End
not answering at last check, Oct 6
Data policy
may train
Channel type
agent tool
Checked
Oct 6 · agent run

Letta ended✕ humans✕ agents

Tested by us
not measured
Model ID
deepseek/deepseek-v4-flash-0731
To start
$0 · account Free plan: limited agents and requests, "rotating free models"
Use it
CLI only
Free condition
Letta Free plan, inside the Letta app, CLI or web app; counts toward the free tier's "standard model requests"
Limit (stated)
not published
ⓘrequest cap unpublished; 3 agents on Free
Started
not recorded; after Aug 13, when Letta still billed it to credits
End
ended 11 days ago Oct 23free window closed: at the 2026-10-23 recheck Letta bills this model to credits (catalogue tier per-inference), and a free account at $0.00 is refused with "minimum $1 in credits is required"
Data policy
may train
Channel type
agent tool
Checked
Oct 23 · catalogue

SenseNova listed✓ humans✓ agents

Tested by us
not measured
Model ID
deepseek-v4-flash
To start
$0 · account SenseNova account + mobile SMS (Free public beta needs no card or real-name)
Use it
API · OpenAI chat
Free condition
SenseNova Token Plan: ¥0 public beta, shared credit pool (60k/5h, 600k/week), no card; real-name only for paid
Limit (stated)
published
ⓘ60k/5h + 600k/week shared
Started
Token Plan public beta since 2026-10-03
End
no end announced
Data policy
not checked
Channel type
router
Checked
Oct 28 · public record

ModelScope listed✓ humans✓ agents

Tested by us
not measured
Model ID
deepseek-ai/DeepSeek-V4-Flash
To start
$0 · account ModelScope account and access token; community reports say an Alibaba Cloud account with real-name verification must be bound
Use it
API · OpenAI chat
Free condition
Daily free API-Inference calls for registered users (a shared daily total; per-model caps vary)
Limit (stated)
published
ⓘ250 magicube/day shared
Started
API-Inference free calls (2000/day or 250 magicube)
End
no end announced
Data policy
not checked
Channel type
router
Checked
Oct 28 · public record