Anthropic's Claude Sonnet 5.5 Is Out, Beats Opus 5.5 at Coding for Half the Price
Published . Updated .
Anthropic's mid-tier model tops its own flagship on Terminal-Bench 4.0 and costs half as much per token, but an independent tester found it burns more tokens than any model it has measured.
Directly affected
- No company is named in this report.
Indirectly affected
- TACU T ROWE PRICE ETF INC
GA selected TACU as a RELATED security because its canonical security name directly matches this event's themes: price. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article.
- TAXE T ROWE PRICE ETF INC
GA selected TAXE as a RELATED security because its canonical security name directly matches this event's themes: price. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article.
- TBUX T ROWE PRICE ETF INC
GA selected TBUX as a RELATED security because its canonical security name directly matches this event's themes: price. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article.
- TCAF T. ROWE PRICE CAPITAL APPRECIATION EQUITY ETF
GA selected TCAF as a RELATED security because its canonical security name directly matches this event's themes: price. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article.
- TCAL T ROWE PRICE ETF INC
GA selected TCAL as a RELATED security because its canonical security name directly matches this event's themes: price. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article.
- TCHP T ROWE PRICE ETF INC
GA selected TCHP as a RELATED security because its canonical security name directly matches this event's themes: price. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article.
Price reaction, T-5 to T+3
Anthropic's mid-tier model tops its own flagship on Terminal-Bench 4.0 and costs half as much per token, but an independent tester found it burns more tokens than any model it has measured.
Source: Decrypt
How far T Rowe Price Etf (TACU) has moved since 28 Sep 2026
Since the first closing price after “Anthropic's Claude Sonnet 5.5 Is Out, Beats Opus 5.5 at Coding for Half the Price,” T Rowe Price Etf (TACU) is +1.80%. The S&P 500 fund (SPY) is +0.29% over the same days, a +1.51% difference versus the market.
Who gains and who loses around T Rowe Price Etf (TACU)
Companies mentioned with this story
- TACU T Rowe Price Etf
For “Anthropic's Claude Sonnet 5.5 Is Out, Beats Opus 5.5 at Coding for Half the Price,” T Rowe Price Etf (TACU) is linked, with no stored direction, medium confidence. Reason on file: GA selected TACU as a RELATED security because its canonical security name directly matches this event's themes: price. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
- TAXE T Rowe Price Etf
For “Anthropic's Claude Sonnet 5.5 Is Out, Beats Opus 5.5 at Coding for Half the Price,” T Rowe Price Etf (TAXE) is linked, with no stored direction, medium confidence. Reason on file: GA selected TAXE as a RELATED security because its canonical security name directly matches this event's themes: price. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
- TBUX T Rowe Price Etf
T Rowe Price Etf (TBUX) is linked, with no stored direction, medium confidence in the 28 Sep 2026 story “Anthropic's Claude Sonnet 5.5 Is Out, Beats Opus 5.5 at Coding for Half the Price.” Reason on file: GA selected TBUX as a RELATED security because its canonical security name directly matches this event's themes: price. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
- TCAF T. Rowe Price Capital Appreciation Equity Etf
For “Anthropic's Claude Sonnet 5.5 Is Out, Beats Opus 5.5 at Coding for Half the Price,” T. Rowe Price Capital Appreciation Equity Etf (TCAF) is linked, with no stored direction, medium confidence. Reason on file: GA selected TCAF as a RELATED security because its canonical security name directly matches this event's themes: price. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
- TCAL T Rowe Price Etf
T Rowe Price Etf (TCAL) is linked, with no stored direction, medium confidence in the 28 Sep 2026 story “Anthropic's Claude Sonnet 5.5 Is Out, Beats Opus 5.5 at Coding for Half the Price.” Reason on file: GA selected TCAL as a RELATED security because its canonical security name directly matches this event's themes: price. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
- TCHP T Rowe Price Etf
For “Anthropic's Claude Sonnet 5.5 Is Out, Beats Opus 5.5 at Coding for Half the Price,” T Rowe Price Etf (TCHP) is linked, with no stored direction, medium confidence. Reason on file: GA selected TCHP as a RELATED security because its canonical security name directly matches this event's themes: price. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
T Rowe Price Etf (TACU)
On 28 Sep 2026, “Anthropic's Claude Sonnet 5.5 Is Out, Beats Opus 5.5 at Coding for Half the Price” is the story that connects T Rowe Price Etf (TACU) to this story.
For T Rowe Price Etf (TACU), the reason on file says GA selected TACU as a RELATED security because its canonical security name directly matches this event's themes: price. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
T Rowe Price Etf (TAXE) is here too. Its reason reads: GA selected TAXE as a RELATED security because its canonical security name directly matches this event's themes: price. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
Dates in the story, and the T Rowe Price Etf (TACU) price range
TACU traded between 27.84 and 28.64 across 15 sessions. The latest close on file is 28.52. TAXE traded between 48.08 and 49.37 across 20 sessions. The latest close on file is 49.22. TBUX traded between 49.55 and 49.81 across 20 sessions. The latest close on file is 49.74.
How strong the case is around T Rowe Price Etf (TACU)
46 out of 100
“Anthropic's Claude Sonnet 5.5 Is Out, Beats Opus 5.5 at Coding for Half the Price” scores 46 out of 100. The score uses 1 sources, and 6 linked companies.