MODEL PROOF
Claude Sonnet 4.6
BETTER VALUE OPTION
A stored alternative has an equal-or-higher measured score and an equal-or-lower price.
Muse Spark 1.3 · Δ score 32.1 points · 67% lower measured price · $2.00 / 1M tokens
Gemini 3.8 Flash is a further stored option with these losses: 128K → 66K max output
- Independent LMArena score
- 1,457.8 ± 3.5 · 70,747 votes
- Context window
- 1M
- Maximum output
- 128K
- Input modalities
- text, image, file
- Output modalities
- text
- Published input price
- $3.00 / 1M tokens
- Published output price
- $15.00 / 1M tokens
- Pricing kind
- fixed
Inspect complete billing conditions and endpoint terms below.
Price from Anthropic: the cheapest offer that is serving, at standard delivery and at the maker’s precision or better, at its standard rate.
Every price dimension · USD per million tokens
| Input | $3.00/M |
|---|---|
| Output | $15.00/M |
| Cached input | $0.300/M |
| Cache write | $3.75/M |
| Cache write 1h | $6.00/M |
| Reasoning | Unknown/M |
| Web search | $0.01/call |
| Batch discount | 50% |
Who sells it
The same weights, different shops. Cheapest is not like-for-like when serving precision differs.
9 provider offers · rates, limits and conditions
Rates are USD per million tokens. Endpoint terms can differ even when the quoted price and precision match. A listed parameter is a provider declaration, not a task-success test.
| Seller | Input | Output | Precision | Uptime (1d) |
|---|---|---|---|---|
| Claude Platform on AWSclaude-on-aws Endpoint terms
| $3.00 | $15.00 | undeclared | 99.99% |
| Azureazure/global Endpoint terms
| $3.00 | $15.00 | undeclared | 95.27% |
| Anthropicanthropic Endpoint terms
| $3.00 | $15.00 | undeclared | 99.95% |
| Amazon Bedrockamazon-bedrock/global Endpoint terms
| $3.00 | $15.00 | undeclared | 99.91% |
| Googlegoogle-vertex/global Endpoint terms
| $3.00 | $15.00 | undeclared | 99.99% |
| Amazon Bedrockamazon-bedrock/us Endpoint terms
| $3.30 | $16.50 | undeclared | 100.00% |
| Amazon Bedrockamazon-bedrock/eu-west-1 Endpoint terms
| $3.30 | $16.50 | undeclared | 99.96% |
| Googlegoogle-vertex/europe Endpoint terms
| $3.30 | $16.50 | undeclared | 99.83% |
| Googlegoogle-vertex/us-east5 Endpoint terms
| $3.30 | $16.50 | undeclared | 99.98% |
Independent scores
| LMArena Elo | 1457.8default |
|---|
LMArena Elo under CC BY 4.0. Absence of another board is not a score of zero.
Best rankings by task
- Godot games #12 1226
- Native Android apps #13 1211
- Mobile apps #14 1209
- Full-stack apps #14 1211
- Websites #16 1291
- Data visualisation #16 1285
- Agenticgamedev #16 1177
- ASCII art #18 1246
Per-task Elo and rank from Design Arena, via OpenRouter’s model feed. The rank is the feed’s, and it counts models OpenRouter does not list.
Capability
| Context window | 1M |
|---|---|
| Max output | 128K |
| Input modes | text, image, file |
| Tool use | yes |
| Reasoning | optional |
| Open weights | no |
Provenance
| Price source | openrouter.ai |
|---|---|
| Fetched | 2026-10-06 |
| Quality data | verified |
| Cross-checked | vendor page |
Sonnet 4.6 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work. It excels at iterative development, complex codebase navigation, end-to-end project management with...
Questions this page answers
What does Claude Sonnet 4.6 cost?
$3.00/M in, $15.00/M out in this catalogue, as of the fetch date on this page. That is the API row, not a subscription.
Does Claude Sonnet 4.6 have an independent quality score?
Claude Sonnet 4.6 has an LMArena score in this catalogue.
What beats Claude Sonnet 4.6?
Muse Spark 1.3 has an equal-or-higher measured score and an equal-or-lower price.
Does this page use Artificial Analysis scores for Claude Sonnet 4.6?
No. Artificial Analysis figures are not published here. Quality on this page is LMArena Elo where a score exists; otherwise the row is unrated.
MODEL MONUMENT
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The verdict as one SVG, for a README or a docs page. It states this model's dominance status at the balanced workload on the LMArena lens, with the date it was computed, and it is rebuilt with the catalogue — so it changes when the verdict changes, including to one you would rather it did not.
[](https://undominated.ai/models/anthropic__claude-sonnet-4.6/)<a href="https://undominated.ai/models/anthropic__claude-sonnet-4.6/"><img src="https://undominated.ai/badge/anthropic__claude-sonnet-4.6.svg" alt="Claude Sonnet 4.6 — Undominated.ai dominance verdict" height="36"></a>Direct file: https://undominated.ai/badge/anthropic__claude-sonnet-4.6.svg — a static SVG, written by scripts/build-badges.mjs on every build, so the copy you embed is never
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