From 854c50dfc4cbf5f6b281dbe5be69b0967508e588 Mon Sep 17 00:00:00 2001
From: Reynold Hu <88558425+reynold-hu@users.noreply.github.com>
Date: Sat, 10 Oct 2026 00:06:51 +0800
Subject: [PATCH] feat(providers): add BytePlus ModelArk Coding Plan provider

Adds the international BytePlus ModelArk Coding Plan (ap-southeast-1) as a provider distinct from volcengine-coding-plan, with dola-seed-2.0-pro/lite/code, deepseek-v4-flash/pro, and glm-5.3-flash. Subscription tier: zero per-token cost; reasoning controls follow the sibling Volcengine Ark Coding Plan evidence. Closes #5857.
---
 providers/byteplus-coding-plan/logo.svg       |  1 +
 .../models/deepseek-v4-flash.toml             | 20 ++++++++++++++++++
 .../models/deepseek-v4-pro.toml               | 20 ++++++++++++++++++
 .../models/dola-seed-2.0-code.toml            | 19 +++++++++++++++++
 .../models/dola-seed-2.0-lite.toml            | 21 +++++++++++++++++++
 .../models/dola-seed-2.0-pro.toml             | 19 +++++++++++++++++
 .../models/glm-5.3-flash.toml                 | 20 ++++++++++++++++++
 providers/byteplus-coding-plan/provider.toml  | 18 ++++++++++++++++
 8 files changed, 138 insertions(+)
 create mode 100644 providers/byteplus-coding-plan/logo.svg
 create mode 100644 providers/byteplus-coding-plan/models/deepseek-v4-flash.toml
 create mode 100644 providers/byteplus-coding-plan/models/deepseek-v4-pro.toml
 create mode 100644 providers/byteplus-coding-plan/models/dola-seed-2.0-code.toml
 create mode 100644 providers/byteplus-coding-plan/models/dola-seed-2.0-lite.toml
 create mode 100644 providers/byteplus-coding-plan/models/dola-seed-2.0-pro.toml
 create mode 100644 providers/byteplus-coding-plan/models/glm-5.3-flash.toml
 create mode 100644 providers/byteplus-coding-plan/provider.toml

diff --git a/providers/byteplus-coding-plan/logo.svg b/providers/byteplus-coding-plan/logo.svg
new file mode 100644
index 00000000000..074e6b0016f
--- /dev/null
+++ b/providers/byteplus-coding-plan/logo.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 300 300" fill="currentColor"><path d="M174.803 135.751C173.507 136.85 171.535 135.92 171.535 134.229V124.87V67.9855C171.535 66.2942 169.563 65.3921 168.268 66.4633L89.338 133.552C88.0422 134.651 86.0704 133.721 86.0704 132.03V86.1671C86.0704 84.8422 85 83.7992 83.7042 83.7992H45.3662C44.0422 83.7992 43 84.8704 43 86.1671V229.816C43 231.507 44.9718 232.409 46.2676 231.338L125.197 164.249C126.493 163.15 128.465 164.08 128.465 165.771V232.015C128.465 233.706 130.437 234.608 131.732 233.537L210.662 166.448C211.958 165.349 213.93 166.279 213.93 167.97V213.833C213.93 215.158 215 216.201 216.296 216.201H254.634C255.958 216.201 257 215.13 257 213.833V70.1842C257 68.4929 255.028 67.5908 253.732 68.662L174.803 135.751Z"/></svg>
diff --git a/providers/byteplus-coding-plan/models/deepseek-v4-flash.toml b/providers/byteplus-coding-plan/models/deepseek-v4-flash.toml
new file mode 100644
index 00000000000..9ea16c24a3a
--- /dev/null
+++ b/providers/byteplus-coding-plan/models/deepseek-v4-flash.toml
@@ -0,0 +1,20 @@
+# Coding Plan model name per the official activity page (accessed 2026-10-10)
+# and the runtime-verified alias report in anomalyco/models.dev#5857.
+# Subscription tier: no per-token price.
+# Toggle: thinking.type = enabled|disabled, matching the sibling Volcengine Ark
+# Coding Plan measurement on the same platform (providers/volcengine-coding-plan)
+# and the toggle the lab (providers/deepseek) exposes. No graded effort: the wire
+# accepts reasoning_effort, but graded levels fully overlap there; not
+# independently re-measured on this host.
+base_model = "deepseek/deepseek-v4-flash"
+
+[[reasoning_options]]
+type = "toggle"
+
+[interleaved]
+field = "reasoning_content"
+
+[cost]
+input = 0
+output = 0
+cache_read = 0
diff --git a/providers/byteplus-coding-plan/models/deepseek-v4-pro.toml b/providers/byteplus-coding-plan/models/deepseek-v4-pro.toml
new file mode 100644
index 00000000000..fbc4b305a1c
--- /dev/null
+++ b/providers/byteplus-coding-plan/models/deepseek-v4-pro.toml
@@ -0,0 +1,20 @@
+# Coding Plan model name per the official activity page (accessed 2026-10-10)
+# and the runtime-verified alias report in anomalyco/models.dev#5857.
+# Subscription tier: no per-token price.
+# Toggle: thinking.type = enabled|disabled, matching the sibling Volcengine Ark
+# Coding Plan measurement on the same platform (providers/volcengine-coding-plan)
+# and the toggle the lab (providers/deepseek) exposes. No graded effort: the wire
+# accepts reasoning_effort, but graded levels fully overlap there; not
+# independently re-measured on this host.
+base_model = "deepseek/deepseek-v4-pro"
+
+[[reasoning_options]]
+type = "toggle"
+
+[interleaved]
+field = "reasoning_content"
+
+[cost]
+input = 0
+output = 0
+cache_read = 0
diff --git a/providers/byteplus-coding-plan/models/dola-seed-2.0-code.toml b/providers/byteplus-coding-plan/models/dola-seed-2.0-code.toml
new file mode 100644
index 00000000000..28df190d146
--- /dev/null
+++ b/providers/byteplus-coding-plan/models/dola-seed-2.0-code.toml
@@ -0,0 +1,19 @@
+# Coding Plan model name per the official activity page (accessed 2026-10-10)
+# and the runtime-verified alias report in anomalyco/models.dev#5857.
+# Subscription tier: no per-token price.
+# Effort: reasoning_effort = none|low|high. Levels follow the sibling Volcengine
+# Ark Coding Plan measurements for the Seed 2.0 family on the same platform
+# (providers/volcengine-coding-plan); not independently re-measured on this host.
+base_model = "bytedance-seed/seed-2.0-code"
+
+[[reasoning_options]]
+type = "effort"
+values = ["none", "low", "high"]
+
+[interleaved]
+field = "reasoning_content"
+
+[cost]
+input = 0
+output = 0
+cache_read = 0
diff --git a/providers/byteplus-coding-plan/models/dola-seed-2.0-lite.toml b/providers/byteplus-coding-plan/models/dola-seed-2.0-lite.toml
new file mode 100644
index 00000000000..219bce9acb0
--- /dev/null
+++ b/providers/byteplus-coding-plan/models/dola-seed-2.0-lite.toml
@@ -0,0 +1,21 @@
+# Coding Plan model name per the official activity page (accessed 2026-10-10)
+# and the runtime-verified alias report in anomalyco/models.dev#5857.
+# Subscription tier: no per-token price.
+# Effort: reasoning_effort = none|low|high, measured on the sibling Volcengine
+# Ark Coding Plan endpoint for this same model on the same platform
+# (providers/volcengine-coding-plan): the wire accepts medium and max too, but
+# medium aliases low and max sits inside the high band, so only none|low|high
+# hold up. Not independently re-measured on this host.
+base_model = "bytedance-seed/seed-2.0-lite"
+
+[[reasoning_options]]
+type = "effort"
+values = ["none", "low", "high"]
+
+[interleaved]
+field = "reasoning_content"
+
+[cost]
+input = 0
+output = 0
+cache_read = 0
diff --git a/providers/byteplus-coding-plan/models/dola-seed-2.0-pro.toml b/providers/byteplus-coding-plan/models/dola-seed-2.0-pro.toml
new file mode 100644
index 00000000000..e0881f6e509
--- /dev/null
+++ b/providers/byteplus-coding-plan/models/dola-seed-2.0-pro.toml
@@ -0,0 +1,19 @@
+# Coding Plan model name per the official activity page (accessed 2026-10-10)
+# and the runtime-verified alias report in anomalyco/models.dev#5857.
+# Subscription tier: no per-token price.
+# Effort: reasoning_effort = none|low|high. Levels follow the sibling Volcengine
+# Ark Coding Plan measurements for the Seed 2.0 family on the same platform
+# (providers/volcengine-coding-plan); not independently re-measured on this host.
+base_model = "bytedance-seed/seed-2.0-pro"
+
+[[reasoning_options]]
+type = "effort"
+values = ["none", "low", "high"]
+
+[interleaved]
+field = "reasoning_content"
+
+[cost]
+input = 0
+output = 0
+cache_read = 0
diff --git a/providers/byteplus-coding-plan/models/glm-5.3-flash.toml b/providers/byteplus-coding-plan/models/glm-5.3-flash.toml
new file mode 100644
index 00000000000..7a4dec6052b
--- /dev/null
+++ b/providers/byteplus-coding-plan/models/glm-5.3-flash.toml
@@ -0,0 +1,20 @@
+# Coding Plan model name per the official activity page (accessed 2026-10-10)
+# and the runtime-verified alias report in anomalyco/models.dev#5857.
+# Subscription tier: no per-token price.
+# Effort: reasoning_effort = low|high|max, mirroring the sibling Volcengine Ark
+# Coding Plan entry on the same platform (providers/volcengine-coding-plan) and
+# providers/zai-coding-plan. No toggle declared there: thinking.type=disabled is
+# rejected. Not independently re-measured on this host.
+base_model = "zhipuai/glm-5.3-flash"
+
+[[reasoning_options]]
+type = "effort"
+values = ["low", "high", "max"]
+
+[interleaved]
+field = "reasoning_content"
+
+[cost]
+input = 0
+output = 0
+cache_read = 0
diff --git a/providers/byteplus-coding-plan/provider.toml b/providers/byteplus-coding-plan/provider.toml
new file mode 100644
index 00000000000..38ab3ca1094
--- /dev/null
+++ b/providers/byteplus-coding-plan/provider.toml
@@ -0,0 +1,18 @@
+name = "BytePlus ModelArk Coding Plan"
+env = ["BYTEPLUS_CODING_PLAN_API_KEY"]
+npm = "@ai-sdk/openai-compatible"
+# Coding Plan is a subscription tier of BytePlus ModelArk (international
+# ap-southeast-1) with its own base URL. BytePlus warns that calling the
+# pay-as-you-go https://ark.ap-southeast.bytepluses.com/api/v3 with a Coding
+# Plan key does not draw down the subscription and bills separately, so the two
+# must stay distinct; a dedicated env var avoids lighting up both at once.
+# Anthropic-compatible base on the same key: https://ark.ap-southeast.bytepluses.com/api/coding
+# Reasoning wire format follows the Volcengine Ark Coding Plan sibling on the
+# same platform; see per-model comments for sources.
+# Models per the official activity page and the runtime-verified alias report
+# in anomalyco/models.dev#5857 (accessed 2026-10-10).
+# Sources:
+# https://www.byteplus.com/en/activity/codingplan
+# https://docs.byteplus.com/en/docs/ModelArk/2628972
+doc = "https://www.byteplus.com/en/activity/codingplan"
+api = "https://ark.ap-southeast.bytepluses.com/api/coding/v3"