Scoring · Index construction
As of Nov 13, 2026 · Source: Cambent TKX
Data current as of Nov 13, 2026
SCORING
Scoring
Composite quality uses a fixed 30 / 30 / 25 / 15 workload blend across reasoning, code, extraction, and classification. Published task scores stay on a 0 to 100 scale. We turn blended price and composite quality into one value score so models can sit on the same scale. Quality stays on a 0 to 100 task scale; price is blended dollars per million tokens. When composite quality is below 80, the value score includes a fixed penalty for that gap. A model leaves the basket when composite quality is below 70 or any task score is below 60. Models above those floors stay in the comparison. Live readings use fully scored models. Details for implementers are in the Index API.
CONSTRUCTION
Index construction
When a fully scored general model joins or leaves and changes what capability costs, the published reading moves by that model's effect. That day's membership move is shown separately from price and score changes.
Pricing today's models directly against the launch-day models can give a different reading from the published one, because some membership changes were linked in without moving the reading. The chart and history show that gap.
HONESTY
Grounded, partially grounded, or provisional
Every model on the TKX carries a source label: Grounded, Partially grounded, or Provisional. Coverage expands as sources are published.
Every quality score is labeled Grounded, Partially grounded, or Provisional. Grounded means every score comes from published benchmark results for this exact model, and its price source's pricing page is on record. Partially grounded means the model is scored but short of Grounded: unpublished scores, a specialist scope, an independent rating, or no pricing page on record. Missing scores stay unlabeled. Provisional is the lowest source tier: models waiting for scores, or with illustrative or borrowed scores not yet traced to a dated benchmark of that exact model. Machine-readable coverage is on the Index API.
Scoring method dated Aug 2026. Value-score method dated Sep 2026. Membership handling dated Aug 2026. Baseline 100 = Aug 4, 2026, set on the launch-day models.
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Corrections
Correction (Oct 20, 2026): the basket member shown as 'DeepSeek V4' since Aug 4, 2026 was DeepSeek V3.2. Its price ($0.28 in / $0.40 out per million tokens) came from a third-party price file and was listed as coming directly from DeepSeek, but DeepSeek does not sell V3.2 on its own API. Grades and price both referred to V3.2 throughout, and the price did not change, so this member did not move any published value. From Oct 20, 2026 the member is named DeepSeek V3.2 and priced from AtlasCloud, a model host, at $0.26 / $0.38. We changed the price source without changing the index level. Published values are unchanged.
Correction (Oct 20, 2026): the prices for Claude Opus 4.8 and Claude Sonnet 4.6 (since Aug 4, 2026) and for the Claude Opus 5 and Claude Sonnet 5 rows (since they were listed on Sep 6, 2026) were labeled 'Anthropic direct' but were read from Amazon Bedrock price entries, and Opus 4.8 was read from the Opus 4.6 entry. The values were the same as Anthropic's own prices (Opus 4.8 and Opus 5: $5 / $25; Sonnet 4.6: $3 / $15; Sonnet 5: $2 / $10 per million tokens), so no published value changed. At the time of this correction, Claude Opus 5 and Claude Sonnet 5 were in no TKX basket. From Oct 20, 2026 all four are read from Anthropic's own price entries. Published values are unchanged.
Correction (Oct 23, 2026): Alibaba announced the retirement of Qwen 3 235B effective Oct 10, 2026, and as of Oct 21, 2026 the model is absent from Alibaba Model Studio's pricing. The price we showed ($0.22 in / $0.88 out per million tokens) came from a third-party price list's entry for Fireworks, a hosting provider, rather than from Alibaba. From the Oct 23, 2026 close, Qwen 3 235B is listed for reference with its scores unchanged, and it is out of the TKX and TKX Open. The published series carry forward through the change, so the published levels are unchanged.