Qwen3.8 Flash-Next

Qwen's model, with open weights. Forcebench has run it in 5 configurations on the API and Local boards. API is models reached through a hosted service; Local, models served on Forcebench’s own hardware.

On the API board

Models reached through a hosted service. Qwen3.8 Flash-Next is ranked by its one configuration: the 23rd-highest score of 26 models, not clearly different from 3 other models. Scores are within 3 attempts (c@3) with 95% intervals; each configuration is compared with the highest-scoring one by whether their 95% intervals overlap. Every configuration on the board → Cost and speed →

44%
within 3 attempts (c@3), 95% CI 39–49 · thinking on · 23rd-highest score of 26 models, not clearly different from 3 other models
21k
output tokens per task · median 22k, p90 33k
610 s
median per task, every attempt counted, including network and queueing · 90th percentile 1806 s
34%
no answer within the 32,768-token budget
$0.021
per task at the list price of 10 October 2026, every attempt counted
$0.048
per solved task: the total cost over the tasks solved · cost and speed
Every configuration of Qwen3.8 Flash-Next on the API board
ConfigurationRank all configsWithin 3 attempts c@3 · 95% CITokens mean · median · p90No answerLatency median per task, every attempt countedCost per taskCost per solved task
OpenRouter · thinking onhighest score37
44%95% CI 39–49
21k22k · 33k34%610 s$0.021$0.048
Suites, at its highest-scoring configuration
thinking on · OpenRouter: within 3 attempts (c@3) on each suite with 95% intervals, against the median of the API board's models, each at its highest-scoring configuration.
  • 95% interval
  • API board median
30%, 95% interval 15–52%
33%, 95% interval 16–56%
59%, 95% interval 36–78%
40%, 95% interval 22–61%
0%, 95% interval 0–18%
17%, 95% interval 6–39%
11%, 95% interval 3–33%
58%, 95% interval 36–77%
78%, 95% interval 55–91%
44%, 95% interval 25–66%
44%, 95% interval 25–66%
60%, 95% interval 36–80%
11%, 95% interval 3–33%
95%, 95% interval 76–99%
83%, 95% interval 61–94%
    Show the numbers
    Per-suite scores of Qwen3.8 Flash-Next's highest-scoring configuration on the API board, with the board's median
    Suitec@3 95% CIAPI medianTasks
    Apex
    30%95% CI 15–52
    90%20
    Salesforce APIs
    33%95% CI 16–56
    72%18
    CI/CD
    59%95% CI 36–78
    88%17
    Salesforce CLI
    40%95% CI 22–61
    90%20
    Salesforce docs
    0%95% CI 0–18
    29%17
    fflib Enterprise Patterns
    17%95% CI 6–39
    61%18
    Flow
    11%95% CI 3–33
    69%18
    Governor limits & pushback
    58%95% CI 36–77
    89%19
    Lightning Web Components
    78%95% CI 55–91
    100%18
    Nonprofit Success Pack
    44%95% CI 25–66
    81%18
    Packaging
    44%95% CI 25–66
    69%18
    Permissions & access
    60%95% CI 36–80
    87%15
    Scratch org definitions
    11%95% CI 3–33
    50%18
    SOQL
    95%95% CI 76–99
    100%20
    Trigger Actions Framework
    83%95% CI 61–94
    86%18

    On the Local board

    Models served on Forcebench’s own hardware. Qwen3.8 Flash-Next is ranked by the highest-scoring of its 4 configurations: the third-highest score of 9 models, not clearly different from 3 other models. Scores are within 3 attempts (c@3) with 95% intervals; each configuration is compared with the highest-scoring one by whether their 95% intervals overlap. Every configuration on the board →

    58%
    within 3 attempts (c@3), 95% CI 53–62 · medium · third-highest score of 9 models, not clearly different from 3 other models
    5.1k
    output tokens per task · median 2.9k, p90 11k
    103 s
    median per task, every attempt counted, on 2× NVIDIA DGX Spark (GB10, 128 GB each) · 90th percentile 687 s
    2%
    no answer within the 32,768-token budget
    Every configuration
    Within 3 attempts (c@3) with 95% intervals, highest first. Bars whose intervals overlap are not clearly different.
    • 95% interval
    medium NVFP4 · vLLM · 2× NVIDIA DGX Spark (GB10, 128 GB each)highest score
    58%, 95% interval 53–62%
    medium MLX 4-bit · TensorFold · 1× Gigabyte AI TOP ATOM (NVIDIA GB10, 128 GB)
    51%, 95% interval 46–56%
    medium MLX 4-bit · MTPLX · Apple M5 Max (40-core GPU, 128 GB)
    50%, 95% interval 45–55%
    medium INT4-AutoRound, 5 of 10 experts · TensorFold (Zig) · 2× NVIDIA DGX Spark (GB10, 128 GB each)
    49%, 95% interval 43–54%
      Show the numbers
      Every configuration of Qwen3.8 Flash-Next on the Local board
      ConfigurationRank all configsWithin 3 attempts c@3 · 95% CIAgainst the highest by 95% interval overlapTokens mean · median · p90No answerLatency median per task, every attempt counted
      NVFP4 · vLLM · medium · 2× NVIDIA DGX Spark (GB10, 128 GB each)highest score5
      58%95% CI 53–62
      —5.1k2.9k · 11k2%103 s
      MLX 4-bit · TensorFold · medium · 1× Gigabyte AI TOP ATOM (NVIDIA GB10, 128 GB)8
      51%95% CI 46–56
      not clearly different12k5.7k · 33k15%331 s
      MLX 4-bit · MTPLX · medium · Apple M5 Max (40-core GPU, 128 GB)10
      50%95% CI 45–55
      not clearly different9.8k4.4k · 33k12%72 s
      INT4-AutoRound, 5 of 10 experts · TensorFold (Zig) · medium · 2× NVIDIA DGX Spark (GB10, 128 GB each)12
      49%95% CI 43–54
      not clearly different13k5.9k · 33k26%291 s

      Latency depends on the hardware: compare it only between configurations on the same hardware.

      Suites, at its highest-scoring configuration
      medium · NVFP4 · vLLM · 2× NVIDIA DGX Spark (GB10, 128 GB each): within 3 attempts (c@3) on each suite with 95% intervals, against the median of the Local board's models, each at its highest-scoring configuration.
      • 95% interval
      • Local board median
      80%, 95% interval 58–92%
      44%, 95% interval 25–66%
      71%, 95% interval 47–87%
      55%, 95% interval 34–74%
      24%, 95% interval 10–47%
      17%, 95% interval 6–39%
      28%, 95% interval 13–51%
      68%, 95% interval 46–85%
      100%, 95% interval 82–100%
      61%, 95% interval 39–80%
      44%, 95% interval 25–66%
      60%, 95% interval 36–80%
      17%, 95% interval 6–39%
      100%, 95% interval 84–100%
      94%, 95% interval 74–99%
        Show the numbers
        Per-suite scores of Qwen3.8 Flash-Next's highest-scoring configuration on the Local board, with the board's median
        Suitec@3 95% CILocal medianTasks
        Apex
        80%95% CI 58–92
        70%20
        Salesforce APIs
        44%95% CI 25–66
        44%18
        CI/CD
        71%95% CI 47–87
        53%17
        Salesforce CLI
        55%95% CI 34–74
        45%20
        Salesforce docs
        24%95% CI 10–47
        12%17
        fflib Enterprise Patterns
        17%95% CI 6–39
        17%18
        Flow
        28%95% CI 13–51
        17%18
        Governor limits & pushback
        68%95% CI 46–85
        84%19
        Lightning Web Components
        100%95% CI 82–100
        89%18
        Nonprofit Success Pack
        61%95% CI 39–80
        61%18
        Packaging
        44%95% CI 25–66
        39%18
        Permissions & access
        60%95% CI 36–80
        60%15
        Scratch org definitions
        17%95% CI 6–39
        17%18
        SOQL
        100%95% CI 84–100
        90%20
        Trigger Actions Framework
        94%95% CI 74–99
        44%18

        By quantisation

        The same effort in different quantisations, each against the highest-precision one on the same tasks (a paired 95% interval), on pass@1, the first answer alone. Where the engine changes too, a difference can't be put down to quantisation alone. The quantisation study has every model.

        Each build at medium
        Overall pass@1 with 95% intervals, labelled with quantisation, engine and hardware. Intervals that overlap are not clearly different.
        • 95% interval
        MLX 4-bit MTPLX · Apple M5 Max (40-core GPU, 128 GB)reference
        37%, 95% interval 31–42%
        MLX 4-bit TensorFold · 1× Gigabyte AI TOP ATOM (NVIDIA GB10, 128 GB)
        34%, 95% interval 29–39%
        INT4-AutoRound, 5 of 10 experts TensorFold (Zig) · 2× NVIDIA DGX Spark (GB10, 128 GB each)
        29%, 95% interval 24–34%
        NVFP4 vLLM · 2× NVIDIA DGX Spark (GB10, 128 GB each)
        40%, 95% interval 34–45%
          Show the numbers
          Buildpass@195% CITokens
          MLX 4-bit · MTPLX · Apple M5 Max (40-core GPU, 128 GB)37%31–429.8k
          MLX 4-bit · TensorFold · 1× Gigabyte AI TOP ATOM (NVIDIA GB10, 128 GB)34%29–3912k
          INT4-AutoRound, 5 of 10 experts · TensorFold (Zig) · 2× NVIDIA DGX Spark (GB10, 128 GB each)29%24–3413k
          NVFP4 · vLLM · 2× NVIDIA DGX Spark (GB10, 128 GB each)40%34–455.1k
          Qwen3.8 Flash-Next at medium by quantisation
          Quantisation · engine · mediumpass@1 95% CIAgainst MLX 4-bit same tasks, pairedTokens
          MLX 4-bit · MTPLX · Apple M5 Max (40-core GPU, 128 GB)reference
          37%95% CI 31–42
          —9.8k
          MLX 4-bit · TensorFold · 1× Gigabyte AI TOP ATOM (NVIDIA GB10, 128 GB)
          34%95% CI 29–39
          no clear difference (−3 pts, 95% CI −8 pts to +3 pts); this data can't rule out a change of up to 8 points12k
          INT4-AutoRound, 5 of 10 experts · TensorFold (Zig) · 2× NVIDIA DGX Spark (GB10, 128 GB each)
          29%95% CI 24–34
          clearly lower (−8 pts, 95% CI −13 pts to −3 pts)13k
          NVFP4 · vLLM · 2× NVIDIA DGX Spark (GB10, 128 GB each)
          40%95% CI 34–45
          no clear difference (+3 pts, 95% CI −2 pts to +8 pts); this data can't rule out a change of up to 8 points5.1k

          In the studies

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